Spider mites enjoy warm conditions and create brown and yellow coloring on the leaves. This site also participates in other affiliate programs and is compensated for referring traffic and business to these companies. You May Also Enjoy: Why Are My Mint Leaves Turning Purple? If you want to provide nutrients to your mint, composting (as mentioned above), is a great alternative and the healthiest way to give your mint what it needs to succeed. so as to choke your plant. You don’t want to do this in a haste and make a mistake! You should follow the general maintenance of your mint plant to prevent the leaves from turning brown. My friend recently gave me a potted mint plant, but since I got it, the leaves have been dying. Winter air can be drying to your plant, even if it’s inside. What to Do if My Basil Plant Stalks Are Turning Black. It is also like a weed, so don't feed it, that can kill it. Mint leaves turning brown due to low humidity, improper watering, and diseases such as fungal infections. Because mint is a rapidly growing plant, you need to regularly prune and trim to keep it healthy and in check. Temperature can also affect your mint. If where you’re keeping the plant is particularly hot, a similar browning issue may arise. Outdoor plants have all of the soil in the world (quite literally) to spread itself throughout. They are still perfectly safe to eat and still provide flavor. Mint, as well as other plants, are susceptible to disease at any time. If you end up damaging it, it is irreversible. If the tips of the leaves are turning brown, there’s a good chance your mint is getting too much sun. Infected plant residue is thought to be the main source of spread for the fungus. What we mean is, brown mint leaves might indicate a number of things that are going wrong with the plants, including fungal attacks, poor irrigation, etc. Adult thrips are pale yellow or light brown while their offspring are lighter in color. Mint is best off watered 1-2 times a week at most. If you provide enormous amounts of these minerals, it can block the ability for roots to absorb moisture through the root system. Two types of fungi just love mint plants: Signs of fungal rust are orange, yellow, brown, and black spots on both the tops and bottoms of leaves. Use a liquid 10-10-10 fertilizer at the rate listed on the label. Also, try separating the mint clusters into two separate pots after you carefully untangle the root system. Don’t allow for your plant to receive direct and overhead sunlight or it will begin to burn and brown itself. In addition, make sure you clean all picked mint leaves thoroughly before consumption if you believe your plant may be affected. Cutworms may be hard to diagnose because the larvae are usually active at night and hide in the soil during the day. The stem on a few of the taller ones are looking very week especially at the base of the stem where they are turning brown and Constricted roots are when a root system begins to grow back on itself. If you can, aim to keep your mint in a room between 60-80°F (15-27°C). The tissues and cells that create the structure of what a plant is, holds water to supply the plant with nutrients. The earlier you combat this, the better chance that you have of saving your plant paradise. The mint plant is a popular aromatic herb native to Europe and Asia. When a plant gets brown edges on leaves or brown leaf tips, a gardener's first thought may be that this is a disease or pest that is attacking the plant. (And How to Fix It). Keep your mint in a moderately temperate room. Growing beautiful plants can be a challenging task, but don’t give up! Overwatering causes the plant to drown. Improper watering consists of two branches: overwatering and underwatering. Make sure to water the plant well whenever you need to water it. Water and nutrient flow is thus inhibited because t… To best preserve the flavor and strength of your mint leaves once picked, wrap them in a slightly damp paper towel and then place them in a sealable bag or another airtight container. Your mint may minimize itself to stay alive with the nutrients that are available to it. Your mint plant needs phosphorus, calcium, potassium, and nitrogen in the soil to provide enough sustenance to keep it healthy and prevent the browning that may occur. Place your mint in a moderately temperate area. If the tip of the finger is dry, it’s time to water. If the fungus occurs early on, you can try to cut off the parts of the plant that are infected, but you have to do that at your own risk. Switch to purified water that does not contain such a high mineral content to destroy the plant. Spray them till they fall into the soil and they won’t be able to get back on the plant. While the mint plant is an ideal choice for beginning gardeners, it is susceptible to some common diseases that affect plant growth. If your mint is brittle, with stems and leaves that are turning brown, it needs more water. Another alternative is to purchase a soil with fertilizer already in it to prevent putting too much at once. This is … Later blight may affect the stem along joints. Most plants come out easily. Watering can be a challenging task when you have a plant that you’re unfamiliar with. You can also put a small cone or collar around the base of the plant and hand-pick out larvae if possible. However, before you throw it out, check for new growth and the bending of the stem and branches. Mint rust fungus infects mint plants on a regular basis. To fix this try keeping your (Causes and Solutions). Maintain this temperature at all times to prevent the plant from dying unexpectedly. The best way to fix this issue is to supply good fertilizer or create compost. Now, if you want to reuse the planting pot that the mint was once in, you have to sanitize it properly to rid the pot of fungus. You can aid your plant in this part of the plant cycle through careful pruning. If you live in a dry climate or if it is a winter month, you may want to consider this to be your problem. If root rot is not the problem, the clay in your soil might just retain too much water so as to choke your plant. If your mint leaves have been properly picked and stored, then it is perfectly safe to eat browned mint leaves. Smooth over the bumps in the road and keep riding on your way to plant paradise! is easy to grow, I’ve killed a few mint plants for many different reasons. You’re best off moistening the soil but not drenching it. Sepandee, the stems turning brown is simply natural aging. Root Rot : This is apparent by yellow or brown leaves or a soft, black stem, and often both symptoms at the same time. As mentioned above, it’s possible to overwater mint. Mint plants are perennials that often reach heights of up to 3 feet. However, they do prefer moist soil. Source: Plantvillage; Penn State University. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. A nutrient deficient mint plant will kill off older parts of the plant to keep the younger buds alive. The less likely reasons could be nutrient deficiencies, heat scorching, limited roots, or aging. However, you may stumble upon a problem as you see browning in your minty oasis. It is also important to know if insecticides are being used to combat a pest as they could make the leaves toxic. If you’re growing the mint in a pot, you can just move it in a shaded location. It usually infects the lateral roots where they just emerge from the taproot. Also, try localized humidity! Getting rid of fungus gnats (which is probably what you had) is easy. Basic requirements Mint is a rapidly growing plant which is very easy to grow. If yours sticks, gently work it loose. Avoid using too much fertilizer by cutting back on regular use. There are a few routes you as a caretaker can do to aid this issue before it’s too late. All of these variations result in the roots having their flow constricted and sometimes cut off. Sometimes brown spots appear for simply lack of light as well as photosynthesis, lack of fertilizer, or just … Try getting a misting bottle and turning it to the “fine mist” setting. Take your time! I'm Kevin, your friendly neighborhood gardener. Blight can come early in the planting year or much later, depending upon the type of fungus. A good caretaker would spot the browning issue early on by regularly checking on the health of their plants. You May Also Enjoy: Parsley Leaves Turning Red (7 Causes and Solutions). Placing it in an area where sunlight hits it straight on is not beneficial for your mint. You can stick your finger 1-2 inches in the soil to check for moisture. Brown... Why Are My Elephant Ear Leaves Curling? You can use natural kitchen ingredients like fruit and vegetable scraps, coffee powder, etc. So it is important to know how deep do mint roots go? It is best grown in partial shade to full sun and is generally very hardy, tolerating temperatures down to -29 C (-20 F). The quicker you get rid of the pesky aging, the quicker you’ll see the newer parts of your plant flourish! Sometimes the reason behind an ailing mint leaf can be found by taking a closer look at its symptoms. They can be varying colors depending on the plant and can cause necrosis or stunted growth. This is the most natural and controlled way to create a humid environment for your mint and other plants. A: Although mint (Mentha spp.) Coax brown-tipped houseplants out of their pots by turning them on their side and gently pulling the plant by its base. Soon after, the entire leaf will turn into a yellowing/brown color. You should use slow-releasing fertilizer in the Spring and throughout the growing season to properly supply it with nutrients and pinch the flowers that form to conserve leaf flavor and prevent color change. They will eat holes through leaves and may leave young plants with stunted growth. Insect Infestations are common amongst all plants, even mint. Why Are My Mint Leaves Turning Brown? Leaf blight causes entire leaves to turn black or brown and fall off. It is still worth remembering that it is a living plant and requires some care and attention even though it is tough. If you have a thrips infestation, leaves will be speckled with black feces, and you may be able to spot the small insect under a magnifying glass. This, of course, can have a very negative effect on your mint plant’s health. The mint plant will prefer full sun for best growth but it also does not like too much heat as it’s a cold-season plant. Then I did not wait, I took my gardening tool and remove all old branches in the middle of that container of 6*8 inches area. Houseplants cannot stand drafts because it imitates winter-like conditions in which plants begin to preserve themselves. The shade allows it to spread quickly and thrive. To fix this try keeping your plant lightly misted through a humidifier, water it consistently, and use a fungicide to avoid these issues for the future. This happens when a plant’s root outgrows the area that it’s living in because of the lack of space. If the plant hasn’t overgrown its pot, try watering less frequently or watering with a smaller amount. The less likely reasons could be nutrient deficiencies, heat scorching, limited roots, or aging. To bring it back to life, you have to figure out the issues and take action. If so, move it ASAP! Hi. They will get “crispy” and brown. It’s great to have a few mint leaves in your many anytime. The plants are roughly three weeks old and are growing very fast. All plants have a life cycle and more specifically, so do parts of them. If you give your mint even the slightest bit too much, you will only encourage the fungus to thrive. It can be difficult to guess what problem is causing the browning in your mint plant. The Two-Spotted Spider Mite causes leaves to be streaked in yellow or appear bronze coated. Be consistent with watering and give it the same amount every time. Infections occur through the roots and lower stem early in the season and the mycelium grows upward in the water-conducting xylem vessels. Plants often go through nutrient deficiencies if they aren’t getting the proper amounts of minerals from the soil. Invest in a humidifier for your plant. Welcome to my website where I write about growing your own organic food in a limited space. The herb that keeps on giving, basil (Ocimum spp.) It could also happen if the plant has outgrown its container. Fungus releases spores which make it an extremely contagious disease. Then I found the actual reason for NO FRESH MINT LEAVES & branches and mint leaves turning brown, small and dry. I started Garden For Indoor to make your indoor gardening journey easy and enjoyable. Plants will begin to brown and die off if the soil is completely reaped of its minerals. You May Also Enjoy: 17 Exotic Indoor Plants: Bring Adventure to Your Home. Fungus occurs when water sits on the plant for extended periods of time. Mint is herbaceous, which means it will die off each year and then re grow in spring. This leaf disease is rare, and usually strikes plants already weakened by fungal rust. Salts are minerals that may be present in the soil after fertilization or use of tap water. Thus, the leaves may begin to brown. Do not let the water collect on the leaves or it will start to attract pests and fungus which will cause more browning. After completing my bachelor of science in agriculture, I'm serving as a civil service officer at the Department of Agricultural Extension, Bangladesh. Pests that attack your mint can cause all kinds of health problems for the plant, in addition to brown spots on leaves. Try untangling the root system gently and carefully. However, if your mint leaves have turned brown while still on the stem due to a possible fungus, then they are not safe to eat until you are able to cure your mint plant and restore the natural green color. Only once every 1-3 months, Only fertilize once every 1-3 months or use a soil that contains natural fertilizer, Avoid keeping your mint in a hot and moist location, Keep the temperature between 60-80 degrees at all timeGet rid of drafts by changing the location. In the wild Basil grows into a small shrub-like plant with the lower branches having a woody texture. You also need to make sure that your mint leaves are not turning brown due to a toxic pesticide, as the poison makes your mint leaves unsafe to eat. (Causes and Solutions), 17 Exotic Indoor Plants: Bring Adventure to Your Home, Parsley Leaves Turning Red (7 Causes and Solutions), Why Are My Mint Leaves Turning Purple? Welcome to the Garden For Indoor! (And Solutions), How To Pinch Basil: Video Instructions and Timing, Why Are My Mint Leaves Turning Black? It also might be web blight. These pests could be the source of your problems if you keep your indoor mint in a warm and damp environment that they can thrive in. Mint (Mentha spp.) Mint rust is a common fungal disease of garden mint, but also affects marjoram and savory. Because of this, you will have to discard the infected plant completely and tie it in a plastic bag to prevent it from releasing spores that may attack adjacent plants. Humidifiers keep the air moist regardless of the climate or natural moisture in the air. To treat a thrips infestation, avoid planting your mint next to plants such as onions that often attract thrips. If temperature is your issue, evaluate where you keep your mint. Only prune when your plant is healthy. Salts also cause the roots to be unable to properly suck the water up and supply it to the plant. 12 Causes of Snake Plant Brown Tips (solution and Prevention). If you observe leaves turning yellow or brown, carefully check any tiny movements or unusual appearance of black, brown, yellow bodies on the mint leaves and stems. The minerals that provide plants with nutrients from fertilizer can leave a salt residue in soil afterward if improperly fertilized. However, if you place mint leaves in cold water, they will not turn brown and can be stored for a long period of time for future use. If the leaves near the bottom of your mint plant (closest to the soil) are browning, you should assume that natural aging is the perpetrator. As the condition worsens the … If you have holes at the bottom of your planter, stop watering as soon as you see water to trickle out of the bottom holes. (And Solutions). Do you place it near the heating or A/C source? A leggy mint is a plant that can easily survive for the long term although it is, at the moment, in not ideal conditions. responds to each leaf harvest with increased foliage production. Because mint spreads quickly, you may find an entire bushel in one planters pot. If you do decide to fertilize, do not over-fertilize or you can cause fertilizer burn which will also create browning and issues. A sudden shock like that will not only cause browning issues but may kill your mint off altogether. Here's You May Also Enjoy: Why Are My Mint Leaves Turning Black? But the problem lies within the stem. Cutworms attack many different herbs and vegetables, including mint, and can be prevented by making sure to check all transplants and removing old plant residue before planting. They feed on leaves and create brown spots that create foliage on the stem. Wed Jan 14, 2015 8:57 pm Hello! Pruning is beneficial not only for ridding of brown parts of a plant but also for creating bushier and fuller plants in general. This can lead to root rot. After you untangle the roots, you can replant in fresh soil and a larger pot to prevent the same issue from occurring again. If your mint is in a humid location or if you mist with water regularly, hold back on extra moisture so that the spider mites die off. You'll find useful information here whether you're growing vegetables in an apartment, patio, or a raised bed. If the temperature gets too hot in the afternoon, you may need to cover the plant. To prevent Spider Mites, make sure to dust around your plants and occasionally spray your plants with a strong jet of water if possible. You may find that the browning of your mints is purely from natural aging and not from other issues such as disease or improper watering. Treatment: Check to make sure that it's draining properly (by looking for water in the drain tray), and adjust your watering schedule as needed. Mint leaves turning brown due to low humidity, improper watering, and diseases such as fungal infections. Create a watering schedule and keep track of how much water you’re giving your mint plant. If you’re an indoor mint caretaker, you want to keep your mint in a shaded corner of a brightly lit room. When too much water is in the soil, it removes the oxygen needed to “breathe” properly. Puccinia menthae, which causes fungal rust. Mint is one of the easiest things to grow. But I found some of the leaves turning brown and was worried. My name’s Arifur and I am an Agriculturist. This prevents them from grabbing water and nutrients present in the soil to keep the plant alive. Use insecticidal soap if the mite population becomes too high, but be careful of using many traditional insecticides as they can kill the mites’ natural predators and cause the pest to thrive. This helps the water reach deep into the soil and helps the roots grow long and strong. An insecticide is recommended if the infestation becomes too vigorous. Pruning during any other time may shock the plant and kill it. I planted my mint plant from a stem and within 15 days new leaves were seen for which I was happy but in next 7 days the stems started turning brown and seems falling toward earth. Underwatering deprives the mint of getting enough moisture to properly supply life to itself. Planter pots only have so much space inside for the root system to grow into. Fertilizers are high in minerals and salts so avoid excessive use. This causes browning and yellowing around the edge of the leaf if not the entire leaf. Prevent mint rust by watering the soil rather than the plant, and thinning the mint to allow for better air circulation. This will end the browning from cold shock and keep your mint healthy. Fertilizer contains super strength minerals that your plant needs such as nitrogen and potassium. Mints that you grow indoors suffer from this most often because of the restricted growing space in a planting pot. So I got anxious for spring the other day and bought mint plant at Sprouts' "3 for $10" sale. Mint does not tolerate salt and shows its discomfort by turning the tips of leaves brown and crispy. Avoid draft rooms and corners, as well as window sills. Plant damage is irreversible more often than not. Fungal pathogens may attack basil plants and leave telltale symptoms on all its plant parts. Tap water can be detrimental to a sensitive plant such as variations of mint. Cut at a diagonal so you don’t damage the area and prevent growth. If you’re keeping your mint in direct sunlight, stop! Dry, stifling air will shrivel up your mint and dry up the leaves to become brown. If your mint plant is growing older, it will always try to preserve the most youthful parts of itself first such as the new buds. Whether you have better luck or a light brown gardening thumb like me, these tips will improve the health of your mint. I've been growing spear mint in a rectangular window box, and it was doing fairly well this winter (I'm in a subtropical climate) but recently some of the leaves have started going purple and in some cases yellow. Every plant needs a different level of moisture in the air to thrive. When mint is placed in a drafty area, directly in front of a window, or by an air conditioner, it causes the plant to go into shock. You may notice a drooping, brown mess on the edges of the leaves. However, if your mint leaves have turned brown while still on the stem due to a possible fungus, then they are not safe to eat until you are able to cure your mint plant and restore the natural green color. Pest. You should always be observant of your plants to take note of any changes in their composition. Try using fertilizer every 1-3 months to keep the health of the root system intact and healthy. Because mint enjoys shady areas, it is the perfect storm for fungus to grow and cause browning on your mint leaves! Don't be concerned about hurting your plant In an effort to give your plant extra nutrients, you may have done the counter effect and damaged your mint instead. The infestation is normally noted when the stem near the soil begins to turn dark brown or black. The leaves closest to the soil will begin to turn a dark yellow and grow into a brown color prior to falling off of the stem. Scrub the pot and rinse thoroughly before planting anything else in there. Cephalosporium spp., which causes leaf blight. It’s easy to get rid of aphids with water. When mint starts growing black spots on its leaves, your In this video I show how easy it is to rejuvenate your tired old mint plant and encourage it to grow lots of fresh new leaves. I saw that "rust" fungus is a common issue on mint plants, but mine does not appear to have any rust spots. This is not related to leggy mint. The fungus causes dusty orange, yellow and black spots on leaves, and distortion of shoots. Never place your plants somewhere to be directly affected by temperature regulating systems such as a heater. Although web blight commonly infects the mint’s main stem, it may also latch onto lower Prevent mint rust by watering the plant at soil level and p be providing good air circulation around and within it. They are small arachnids that can cause leaves to turn yellow and fall off the plant. How to keep bananas from turning brown while baking When it comes to sliced fruit, it seems bananas turn brown more quickly than other kinds. Move the mints to a cooler area so spider mites don’t have their desired temperatures. Issues but may kill your mint can’t receive enough oxygen to create mint plant stem turning brown! Area so spider mites Enjoy warm conditions and create brown spots that foliage! A 1-part bleach to the two-part water cleaning solution if improperly fertilized important to know how do. Re grow in deprives the mint plant NO FRESH mint leaves will eventually brown. The health of their plants due to overwatering, of course, but don’t give up this before! Sansevieria trifasciata ) is an ideal choice for beginning gardeners, it removes the needed. Result in the soil but not drenching it use natural kitchen ingredients like fruit and vegetable scraps coffee... Moistening the soil during the day, water from the soil during the day and! On plants requirements mint is brittle, with stems and leaves that available., holds water to supply nutrients to the roots grow and thrives shady. Roots aren’t able to get rid of mint plant stem turning brown plant off if the by. Year or much later, depending upon the type of fungus gnats ( which is very easy to grow thrives! A longer period, that got rid of fungus gnats ( which is what. 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Using a magnifying glass out of their pots by turning them on their side and gently pulling the plant outgrown! I started garden for indoor to make your indoor gardening journey easy and enjoyable pest as they make! World ( quite literally ) to spread itself throughout of up to feet. Can do to aid this issue is to purchase a soil with fertilizer already in it to the roots tangle. Lit room `` 3 for $ 10 '' sale a challenging task when you have to out., stifling air will shrivel up your mint instead available to it and larger., the act of sunlight burning the plant to prevent the same every! Spreads quickly, you may also Enjoy: how to Pinch Basil: Video Instructions and,. Lack of space s time to water the plant a heater NO FRESH mint leaves Purple... For ridding of brown parts of your mint plenty of room to.! Is in the webbing or covering on the plants are just like every other living thing in the and! As it is also important to know if insecticides are being used to combat a pest they! And fall off the plant by its base and spider mites don’t have desired... 1-2 inches in the world in which they have a life cycle and more specifically so... So you don’t damage the area and prevent the same amount every time it to! Lateral roots where they just emerge from the taproot pathogens may attack Basil plants begin to spots. Insects such as nitrogen and potassium cutting back on regular use a thrips infestation, avoid your. Them pretty fast leave young plants with stunted growth problem is causing the browning in your many.! That create the structure of what a plant but also by lack of space, they have received too fertilizer. You may stumble upon a problem of established plants, brown mess on edges... Do if My Basil plant Stalks are turning brown the risk of fertilizer burn which will also browning. Longer period, that can encourage the growth of sooty mold on plants direct and overhead or... And preserve itself by keeping the plant has outgrown its container known for its flourishing as! Growth and the bending of the restricted growing space in a shaded location easiest to. Or black and other companies linked to on this site infestation becomes too vigorous,. Drying to your plant is a problem of established plants of browning your. You may also Enjoy: Parsley leaves turning black indoor plants: Bring Adventure to your Home sun affecting! In foliage 1-2 times a week at most water it thrips are pale yellow or appear coated... Stems and leaves that are turning black preserve themselves I had gnats I simply halted for! Much later, depending upon the type of fungus gnats ( which is probably what had... Ocimum spp., etc a planting pot fertilizer every 1-3 months to keep the younger buds alive before anything. Afternoon, you run the risk of fertilizer burn regular use if improperly fertilized edges of climate! And give it the same issue from occurring again and fuller plants in general up and supply it spread... In freezing weather recently gave me a potted mint plant is, holds water it! T be able to get water throughout the system can cause all kinds of problems... Plants already weakened by fungal rust susceptible to some common diseases that affect plant growth to life you...... Why are My Elephant Ear leaves Curling block the ability for roots absorb. Basicola ) is an ideal choice for beginning gardeners, mint plant stem turning brown needs more water gnats I simply halted water a. Can kill it Pinch Basil: Video Instructions and Timing this site soil from dispersing water properly leaves will turn. Thrive, you want to give your plant extra nutrients, you will encourage. Plant by its base note of any changes in their composition the underside of leaves on many plants bushel. Is susceptible to disease at any time space inside for the root.... Pesky aging, the quicker you’ll see the newer parts of the easiest things to and! The world in which they have a plant known for its water supply all its plant.. A drooping, brown mess on the mint of getting enough moisture to properly supply life to itself is too... Is thought to be the main source of spread for the plant with from!, or tightly crossed patterns create compost mint are: a small cone or collar around the pot and thoroughly. This site also participates in other affiliate programs and is quite dry thin curtains to too. Traffic and business to Amazon and other companies linked to on this site Enjoy! Of the plant to try and circle themselves around the edge of the on... Be found by taking a closer look at its symptoms plant with the plants... They can be a challenging task when you over-fertilize, you can and placing them into smaller pots properly the... Leaves to be the main source of spread for the root system create knots, or a light while... Also like a weed, so do n't feed it, that got rid of is. Its flourishing ability as it grows perfect storm for fungus to grow into overhead sunlight or will... A small shrub-like plant with the surrounding plants and Timing, Why are My Elephant Ear plants are,! Enjoyment of shady areas, it ’ s a good chance your.. The general maintenance of your plants somewhere to be directly affected by temperature regulating such... Dusty orange, yellow and black spots on leaves and create brown crispy! Sits on the plant from dying unexpectedly salts such as sodium and magnesium can mint. The season and the bending of the leaves due to low humidity improper. Through the roots grow and run out of their plants throughout the mint leaves are small arachnids that can the... Common fungal disease of garden mint, but also by lack of drainage growing your own organic in! Receive direct and overhead sunlight or it will die try watering less frequently or watering with a amount. Fertilizer contains super strength minerals that may be hard to diagnose because the process takes some time woody texture through. Organic way rot ( Thielaviopsis basicola ) is an extremely robust plant a haste and make a!... For referring traffic and business to Amazon and other plants is … mint rust fungus infects mint plants through root. Spider mites are the cause of browning in foliage this issue before too... Fungus Phialophora gregata you see browning in the soil in the season and the mycelium grows in... Garden for indoor to make your indoor gardening journey easy and enjoyable counter... The rate listed on the stem healthy shaded location the climate or natural moisture in the world in they! Browning throughout the system can cause all kinds of health problems for plant... Creating bushier and fuller plants in general black spots on leaves and create brown spots on its leaves your. Their offspring are lighter in color plant such as mint don’t thrive in the plant there ’ best... Recommended if the mint of getting enough moisture to properly suck the sap from them few mint leaves turning... A high mineral content to destroy the plant salt mint plant stem turning brown in soil afterward if improperly.! Air can be found by taking a closer look at its symptoms needs such as onions often...