![]() If you can see roots poking out of the drainage holes of the container that your mint is planted in, you know it is time to transfer your plant to a bigger pot or divide the plant into two. Start watering every three to four days, if the climate is humid enough. Decrease the amount as well as the frequency of the water. Water your plants less, especially during the cooler months when the water does not evaporate easily. The first step is to remove the parts of the plant that have black spots or have turned black or brown. You can follow the below steps to revive the mint plant If the top leaves are healthy and black spots are present only on the leaves at the bottom, then it is most likely a drainage issue. Tip – Check for healthy leaves at the top of the plant. Mint grows best in light soil with sufficient drainage to allow water to flow easily and keep the roots healthy. ![]() Mint plants have sensitive root systems, which is why insufficient drainage can cause stress to the roots of the plant. This also creates black or white spots on the mint leaves. Overwatering also creates a lot of moisture, which leads to fungal diseases like root rot or powdery mildew. Mint plants require regular watering, but overwatering can lead to overgrown roots and black or brown spots near the roots or on the bottom layer of the plant. So, when you see black spots on the mint leaves, it could be a reason to worry.Ĭauses of Black Spots on Mint Leaves include Overwatering, Humidity, and heat, Mint rust, Over-fertilization, Leaf blight, Mint aphid, etc 7 Causes for Black Spots on Mint Leaves and ways to fix 1. The fresh mint plant needs some more care than just being watered.
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