Host Plants – Crape myrtle is the only known host of this aphid. If you want to grow crepe myrtles as trees, low shrubs or container plants, you should know about all the common diseases and pests that can plague these plants. Apply it early in the morning or just before dark on a cloudy day when bees and other beneficials aren't active. They suck the sap from the plant. When they feed on plant sap, they excrete honeydew copiously, which in turn serves as food for the fungas, sooty mold. The sap that drips from the Crape Myrtle tree is actually sap passing through the aphid as it feeds. The turgor pressure in the leaf is so great, that the sap goes right through the aphid and out the other end! What will get rid of them? Their high reproductive rate compensates for the short lifespan and maintains their population. Aphids on Crepe Myrtles Asked September 21, 2020, 8:55 AM EDT I used to have 5 Crepe Myrtle trees...and I lost three of them in 2016 to what I believe was Aphids, due to neglect...Really didn't notice the problem till it was too late. All the streams of water ,soapy or not, plus Lady Bugs in the dusky part of the day people are absolutely correct! The crepe myrtle, sometimes spelled crape myrtle or crapemyrtle, is a large, flowering tree. If the size of your crepe myrtle doesn't limit its coverage, nontoxic, ready-to-use insecticidal soap kills the aphids on contact. Crape myrtles (Lagerstroemia indica) are small warm-season trees or shrubs that thrive in hot climates and dry soil. Those are not only aphids, but the Crape myrtle aphid, Tinocallis kahawaluokalani. Aphids love to feed on plants with high nitrogen levels and soft, lush growth. Aphids are a number one culprit. Planting flowering onions, garlic, and chives throughout your garden can help discourage aphids. Unfortunately when these natural enemies are disrupted (read killed) crape myrtle aphids get out of control. It is the job of natural enemies to clean up after and between insecticide applications. This drought-resistant and heat-tolerant plant comes in many sizes and can be grown in most climates. Crapemyrtle aphid is host specific to crape myrtle, so it does not feed on other plants. Steps. 1 decade ago. Since it's already mid August, is ok to run out the rest of the season without any treatment? Lifespan. I had to remove a large crepe myrtle tree (18" diameter stump) and digging out the stump was not possible. Cabbage loopers love turnip greens just as you do. This will give you an idea where to target your approach to getting rid of them. Here in Macon / Warner Robins crepe myrtle aphids reproduce quickly. They migrate over large distances. Aphids are bothersome little insects that eat Crape Myrtle leaves. Aphids use their piercing sucking mouthparts to extract sap from the tender, new growth of plants. It can improve control of pests such as aphids.Remember, an insecticide application will never kill every individual of a pest population. Question 1 - They recommend a spray to kill the existing aphids, and a drench to carry us through the end of the season. For the rest of the summer crape myrtle aphids give birth to many nymphs. The appearance of sooty mold can sometimes be an indication that you have an over population of aphids or Scale on your plant. What will get rid of them? Crapemyrtle aphids are easy to distinguish from other aphids that occasionally infest crapemyrtle. It is used frequently in southern gardens because the hot summer climate allows it to thrive. Crapemyrtle aphids damage crape myrtle cosmetically and are not known to vector any plant diseases. The pyrethroids used by most mosquito operations kill … Feeding by crapemyrtle aphids may reduce plant vigor and cause leaves to distort … Don’t over fertilize your plants. Take the time to learn what these turnip pests look like and how to spot the adults and larvae. Wings are clear with dark markings and they are held roof-like over the back of the body. 4. The black mold on a crepe myrtle is attributed to aphids. Crape myrtle aphids overwinter as eggs and hatch in April. Crepe Myrtle Bark Diseases from Scale. Flea beetles can be a major problem. They feed by sticking their mouthparts into a plant and sucking out the sugar-rich sap, like a teenager slurping down a frappuccino. The second abdominal segment has a double-pronged hump. Crape Myrtle Aphids: Crape myrtle aphids are pale yellowish green in color with black spots on the ... using insecticides means that beneficial predators will also be killed. My crape myrtle has aphids. Crapemyrtle aphids nymphs resemble wingless adults, but are smaller. Found throughout April through September, these tiny insects do damage by feeding on the soft tissues and plant sap of crepe myrtle leaves. Species variation is higher in temperate regions, than tropical regions. Its active ingredients are natural pyrethrins, so it is safe for humans and can be used both indoors and outdoors. 0 0. Aphids feed on the sap of plants, which is damaging enough on its own, but to get to the sap they chew up the leaves with their efficient jaws. Spray your crepe myrtles until the soap drips from all their surfaces, and repeat every week to 10 days or as often as the manufacturer suggests. Prune your crepe myrtle in the winter or early spring. Large populations produce enough honeydew to completely coat leaves and other objects below, giving infested plants a sticky or shiny appearance. This spray kills pests, including aphids, on contact. If there's an ice storm, lichens can add a heavier load of ice to a limb, increasing its chances of breaking. Because it feeds on the lower surface of crepe myrtle foliage, it is inconspicuous except for the copious amounts of honeydew that it excretes. I was inspired to write this blog after a number of emails and queries about what many of us in the garden biz politely refer to as “Honey Dew”. Crape Myrtle Aphids are one of the main causes of honeydew and sooty mood on Crape Myrtle trees. The reason this plant variety is common in warmer climates is because they’re beautiful and difficult to kill. Question: I have a problem with crepe myrtle shoots coming up in my flowerbed. Crape Myrtle aphids are small, yellowish green insects that feed by sucking the sap from the leaves of the tree. This makes it easy for them to rapidly grow into a large population that will damage your crepe myrtle. My crape myrtle has aphids. I keep 4 retail stores and one commercial growing range clean that way There also beneficial wasps, no bigger than tiny brown ants with wings that lay their eggs in Aphids. If you’re searching for a hands-off tree, crepe myrtle could be what you need. Crepe Myrtles with Aphids? Part 1 of 4: Pruning Your Crepe Myrtle 1. Source(s): crape myrtle aphids rid them: They are all natural, and the aphids will disappear. Crapemyrtle aphids feed on phloem sap in which the primary constituents are sugar and water. Go to Home Depot, and get a bag of them, and then release them in your plants. They also breed rapidly and won’t stop feeding until they kill the plant, at which point they migrate to the next plant and the cycle starts all over again. How/when do I apply? Something that you should do this coming winter is spray your tree a couple of times with a horticultural oil, even a dormant oil. Aphids dislike the smell produced by members of the onion family. If you’ve seen one crepe myrtle, you haven’t seen them all. The lifespan of aphid species is only about 20 to 40 days. One aphid dies, one aphid hunting wasp is born! Found throughout May through September, these tiny insects do damage by feeding on the soft tissues and plant sap of Crepe Myrtle leaves. Aphid species are found all over the world and especially in all the temperate regions. Fortunately, the common Lady Bug can eat up to 1,000 of these little critters a day! Are insecticides the answer? Winged adults have dark tipped antennae and two double-pronged humps on the back. Sooty mold colors crape myrtle foliage and wood black, prompting many people to apply insecticides for the aphids. If it is determined to be absolutely necessary, various insecticides are labeled for use by homeowners against aphids on crape myrtles. Common Name: Crapemyrtle aphid Scientific Name: Tinocallis kahawaluokalani (Kirkaldy) Order: Homoptera Description: Adult aphids are 1/16-inch long, light green to yellow with black spots and body markings. Damage to crape myrtle is an indirect result of aphid feeding and does not result in permanent damage or long term effects on plant vigor. Damage – The crapemyrtle aphid is the only significant insect pest of crepe myrtles in the Southeast. Favorite Feeding Plants. This often leads to a black fungus, called sooty mold, forming on leaves and branches in mid- to late summer. If you're going to effectively kill a crepe myrtle, you need to properly prune it in preparation for cutting, safely cut it to the stump, apply the right herbicide, and remove the tree stump remains. And … Insects That Attack Crape Myrtle Trees. Lichens thrive in sunny parts of a plant with few leaves, but are not responsible for thinning leaves. Our most popular choices for these are Talstar P (topical spray, water-based concentrate- use 1 oz per gallon of water) and Dominion 2L (systemic, applied as a root drench; use 0.2 oz per inch of trunk diameter for trees or per foot of shrub height for bushes). Spray bare branches thoroughly. It’s a “Sticky Situation”. Lisa's Landscape & Design ♦ 08/05/2012 ♦ 2 Comments. 3, Crepe Myrtle - A small to medium size tree that blooms in mid summer, has colorful fall foliage and beautiful branch patterns over the winter. Answer: It is usually recommended to do both a topical treatment as well as a systemic treatment for aphids. I leave the seed pods on over the winter which attracts cardinals and other migratory birds. Which brand/type will work best? Although gray-green lichens may look ugly on a crape myrtle's bark, they won't do physical harm. Crape myrtle aphids are tiny, only about a 16th of an inch long. Crape myrtle aphids, and other aphids, attract a lot of generalist predators such as lady beetles, green lacewings, and minute pirate bugs that keep them in check. Crepe myrtle aphid is an important pest of crepe myrtles throughout their range. Older nymphs have black spikes on the abdomen. Here’s how you can add them to your yard or garden: Growing Conditions for Crepe Myrtle. Aphids are not a welcome insect by any means, but there are going to be a few tolerable amounts on any crepe myrtle. Anonymous . These aphids reach high numbers during mid-summer. Lady bugs. We have noticed this happening as a consequence of mosquito spraying. Black Sooty Mold on an Azalea How to Treat Aphids … Crape myrtles are commonly attacked by crape myrtle aphids. Aphid feeding creates distorted/chlorotic leaves, and copious amounts of honey dew in which sooty mold grows on. Crepe myrtle aphids reproduce rapidly, especially as the weather gets hotter. Oil applications can do wonders to nip the aphid cycle in the bud by smothering eggs. Crepe myrtle (Lagerstroemia) is a very popular shrub, with spectacular blooms that last for an extended period. Crape myrtle aphids are tiny, only about a 16th of an inch long. If your crepe myrtle is affected by white scale, it may develop black sooty mold (In fact, the sooty, black substance may be the first sign of white scale on crepe myrtles.). Crape Myrtle.