Curled leaves could be caused by leaf miner, aphid, leaf curl or cold damage. Most citrus trees in the warmer growing months will only need one or two deep soakings a week. A copper based clean up spray is the most effective way of controlling leaf curl. If the leaves drop rapidly, your lime tree will also recover. Repeat until the plant begins to recover. Older, hardened leaves won’t be affected. Spray leaves with an insecticidal oil to remove leaf miners. Gardeners who believe they may have a citrus tree infested with Asian citrus psyllids or infected with HLB should contact California Citrus Threat Citrus Threat and Disease Prevention Program. If your lime leaves are curling, it may seem like your plants are headed for disaster, but there are several easy-to-solve problems that could be causing this situation. When leaves are uniformly green, open, upright and growing vigorously, your plants are well-cared for and healthy. Her work has appeared in national magazines and newspapers including "Ferrets," "CatFancy," "Lexington Herald Leader" and "The Tulsa World." Frost-damaged leaves will display dark spots. Neem oil is an effective treatment against mites and scale insects, but aphids can easily be sprayed off the lime tree with a garden hose. Leaves that are attacked by leaf miners will curl or cup inward, and have squiggly lines on the surface. If you suspect frost damage, wait to see if the damage is mild. Curled leaves on a lime tree can indicate several different problems. Over watering, under watering and heat stress can cause leaves to curl up or inward. Learn what to look for and how to handle common lime tree leaf curl problems in this article. Leaf curl overwinters in buds of infected trees. Got to my new house and they didnt fair so well. Is my lime tree in need of something else? Prune away any curling leaves to remove any miners that you may have missed. However, you shouldn’t leave a potted lime tree in standing water at all times either since the tree likes it a little bit dry. This isn’t a real problem unless the new growth also comes out curled. Close inspection may reveal fungal spores or lesions beginning to form. When lime trees are stressed by especially hot or cold weather or are attacked by insects and fungus, the symptoms often include curled leaves. Instead, remember to water them deeply once or twice a week. However, when you see unusual spotting, discoloration, and curling leaves of citrus trees, something is definitely wrong. Examine leaves for aphids, which appear as little, mite-like brown, white or yellow insects. When lime trees are stressed by especially hot or cold weather or are attacked by insects and fungus, the symptoms often include curled leaves. Learn which plants thrive in your Hardiness Zone with our new interactive map! If the leaves are curled, they are damaged. Most fungal diseases can be defeated with a basic fungicide like a copper-based spray. Sign up for our newsletter. Your lime leaves are curling and you have no idea where to start treating it. Too much water will normally cause them to curl inward. Here are some common reasons for leaf curl on lime trees: Normal behavior. The leaves on your plants are trying to tell you something. How to treat citrus leaf curl. Improper watering. Plan the perfect garden with our interactive tool →, University of California: Pests in Gardens and Landscapes, University of Florida Monroe: FAQs--Citrus, University of California Agriculture and Natural Resources: Citrus, Sloat Garden Center: Rescuing Lime Tree in Distress, University of California Agriculture and Natural Resources: Citrus Leafminer. When lime trees are stressed by especially hot or cold weather or are attacked by insects and fungus, the symptoms often include curled leaves. Spray leaves with a copper-based fungicide if leaves appear puckered and reddish. This is a sign of the leaf curl fungus. Spray your citrus tree with insecticidal soap or neem oil or a good insecticide from your garden centre. My Lime tree was doing wonderful too.. very full foliage, green and producing a lot of limes. It’s not uncommon for lime leaves to curl downward in the fall or winter. Lime tree leaf curl isn’t the most attractive thing to ever happen to your tree, but it’s not usually a major problem. Our plants can bring us so much joy and calm, but when the leaves on your favorite lime tree start to curl up, your garden can become suddenly distressing and a source of worry. Look for adult leaf miners, which lay eggs under the leaves near the central vein. All Rights Reserved. Tracy Morris has been a freelance writer since 2000. … However, insecticides for home use are not only relatively ineffective, but also kill off the predators that naturally feed on citrus leaf miners, so may compound the problem. Curled leaves on a lime tree can indicate several different problems. However, insecticides for home use are not only relatively ineffective, but also kill off the predators that naturally feed on citrus leaf miners, so may compound the problem. The leaves may exhibit different curving depending on the type of citrus tree or the cause of the problem. The way you treat and care for your lime tree … Curled leaves could be caused by leaf miner, aphid, leaf curl or cold damage. Leaves started discoloring, yellowing, curling and falling off. Disease. When a lime tree's leaves are curled, it's a sign that the tree has frost damage or is infested with citrus leaf miner. Leaf miners are nothing to worry about unless they’re all over your tree. Some varieties are more susceptible to leaf curl disease than others. If, however, the foliage is wilted, spotted or in any way less than robust, your plants are likely to be suffering from a pest, disease, nutrient deficiency or other problem.