Despite its usual hardiness, in the spring and fall, some leaves may turn grayish white. Okay, jumping off that soapbox, let’s talk about the Crapemyrtle Bark Scale. In old, overgrown landscapes, mosses and lichens are a common sight on trunks and branches of trees and shrubs. Its deep green foliage and bright-colored blooms last throughout the summer and its interestingly textured trunk accents the landscape in winter. Lichens are fungal epiphytes, not parasites, meaning they get their nutrients from the air, not the tree they’re growing on. Rarely are they found in water. Lichens have two components—a fungus and an alga living in association with one another to give the appearance of a single plant. Spots or White Powder on Crape Myrtle Leaves? All crepe myrtles bloom on new wood and should be pruned in winter or early spring. By early to … They are symbiotic growths of algae and funguses as they nourish one another. Like the algae, lichens manufacture their own food. Q: I trimmed my crepe myrtles back recently and there was a lot of mossy green ruffly stuff growing on the branches.They haven't been blooming very well either. Queen's crepe myrtle, L. speciosa, grows only in the Tropical South. The gnarly tissues are more puzzling. The crape myrtle is a popular woody ornamental plant. With crape myrtles, the life of lichens and moss is often short-lived as these trees and shrubs shed their bark to cleanse the surface. As a reminder, crape murder is the extreme pruning of crapemyrtles that results in weakened and deformed trees. No problems there. Dec 22, 2017 - Lichens are more likely to grow on crape myrtles (Lagerstroemia indica) in areas with long periods of high humidity and on branches exposed to full sun. However, the Crape Myrtle does boast a higher resistance to pests and diseases than other flowering tree varieties, and when they are affected, the issues are easy to mediate quickly. Fungus on Crape Myrtles. What do I … We have a 30 foot crape myrtle in our Austin backyard (see photo) In the last three years, the leaves have become redder and the tree weeps. If you aren’t sure how to properly prune your crapemyrtles, check out this post. When to know a crape myrtle is dying. They almost look like the aftermath of physical injury, perhaps from hail damage or an animal chewing. On large shrubs and trees, remove basal suckers, twiggy growth, crossing branches, and branches growing toward the center of the plant. The fungus creates a protective structure for the algae, which produces food through photosynthesis. Tags: Fungus, fungi, funguses,Crape Myrtles, lichens, treatment, fertilize, fertilizer, knockout rose bush, general purpose fertilizer, rose fertilizer, tree fertilizer, spikes, lawn and garden, the southern garden ... Lichens are self-sustaining organisms that attach and grow on the bark of trees and shrubs. The gray growths are called lichens and they are harmless. 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