This is my first day to finally get a minute to catch up on messages since we get so busy in the Spring. Winter is an especially good time to treat for scales because the higher (dormant season) application rate can be used without damaging the plant. -Denise, Yes if the trees are not treated for 3+ years then it could hurt it enough to kill it in my opinion. I was just about to remodel my front flower bed when I discovered the white bark disease bugs on my crepe myrtle tree. Because the females do not disperse from the plant, these scales probably spread locally during the crawler stage via wind or birds. Do you recommend the Bayer spray over washing the bark with soap and water like some sites have recommended? I should have used the word “Treat” and not “Spray”. I gave them a good pruning. The scale is a sucking insect Occasional pests here and there are going to happen to all trees as some point, but this is super easy to treat. Crape Myrtle Bark Scale. The Chinese Photenia is actually a parent plant to the Red Tip Photenia. Up close, CMBS is white to gray and about 2 mm (0.08 inch, a bit longer than the thickness of a dime) long. Systemic insecticides have shown the most promise in tests to date. How do I get that look. Scrub down the trunk of the crapemyrtle with a mild solution of dishwashing soap and water using a long-handled brush to remove both the scale and sooty mold. Crape myrtles are prized for their beauty and relative freedom from pests in the United States. If not, when should I reapply? I recommend waiting until you notice any scale to treat them. Once the mated females produce their ovisacs (egg-containing capsules) and lay eggs, they die. -Denise. Crape myrtles are a very hardy trees with lots of reserves, so it would take several seasons of bark scale for the tree to succumb to this pest. Just ordered crepe myrtles to plant in my sunny yard where I need a little shade. What should you do if you discover crepe myrtle scales on your tree now? We hate that the insecticides are the best method for this bug, but it’s the unfortunate case. To kill the scale we recommend Bayer Advanced Tree and Shrub Protect and Feed Concentrate. Black sooty mold literally looks like black dust on your leaves and bark. April is just a crazy busy month for us. Mississippi State University Extension. Products containing pyriproxyfen or buprofezin have had good success in scale crawler control. Do I need to wait a season before planting or treat the ground with anything so the new trees don’t potentially get these critters? hlo…can I use insecticides for bark scale. This honeydew, in tu… Our pollinators are in severe decline. I hope to encourage people to enjoy their homes, indoors and out. Cover the tree thoroughly with pesticide, especially when using oil. Slowly over the last 13 years it has moved northward and is now a serious threat to Crepe Myrtles in Hampton Roads. For mature adults, please apply Bayer Advanced. When crushed, these scales exude pink “blood”-like liquid. You can always just throw on a pair of gloves and go to town smashing all of the individual scale bugs. It also reduces blooms and weakens some trees. This honeydew turns in to a black sooty mold. The males pupate and develop external wings during the last instar. We’re here in N. E, Texas with high humidity and starting now warm to hot temps. This nonnative scale was first detected in the United States in 2004. The current recommendations for control are both removal by hand and the use of winter dormant oils. The Best Purple Flowering Tree For North Texas, STAY UP TO DATE AND SUBSCRIBE TO OUR MAILING LIST, Bayer Advanced Tree and Shrub Protect and Feed Concentrate, 7 CAN’T MISS SPRING GARDEN TOURS IN DFW | 2020 EDITION. – Denise. The crape myrtle bark scale was first confirmed in the United States in 2004 in landscape near Dallas, although it was likely introduced earlier. They even bloomed in late July and the Japanese Beatles had a celebration. is a deciduous shrub or tree that ranges in height from 3-foot dwarves to towering trees of 50 feet. They will be able to advise you better than I. Treatment for the black sooty mold is not recommended and once the scale is terminated then the black sooty mold will disappear as well. Crape myrtle bark scale is relatively easy to iden-tify. Inspect the tree, if you suspect the scale, you can treat now. Adult females are felt-like white or gray encrustations that stick to crape myrtle parts ranging from small twigs to large trunks. We of course wish that more organic options really worked, but sadly they do not seem to be effective enough. Apply them to the root zone as a soil injection (Fig. 6. 2014. It is one of the only scales known to infest crape myrtles. Crape myrtle bark scale will not attack any of your other plants so you are good to move forward with your install. Hope this helps you and good luck! 3). The scales also reproduce on the shrubs, with each female laying dozens of pink eggs. – Denise. The eggs remain protected within the white colored ovisacs until the crawlers (immatures) hatch and disperse onto the branches. A soil drench will also control aphids, Japanese beetles and other pests. Your email address will not be published. Crape myrtles are also know for their resistance to powdery mildew, and can thrive in the sun and part shade. We Texans sure do love our crape myrtles, unfortunately so does this fairly new pest to North Texas called bark scale. Yes you can, and we recommend the Bayer product listed in the article. I knocked off most of the scale with my hose sprayer, followed by spraying with a product called “Eight.” I then fertilized the plant with a granular product. -Denise. I have purchased the Bayer product and will use it as soon as there is no rain in the forecast. Gray bark scale won’t kill crape myrtles, but it can be washed off if you don’t like the look. Crapemyrtle Bark Scale: A New Insect Pest, FSA7086. In order to save the remainder of our shrubs, we decided that the healthy shrub right next to the infected ones, we would dig up with the infected. Nurseries will incur higher costs to control the scale and maintain clean plants. I went to several local garden centers, asked questions, showed pictures and nobody had a clue. It has black bark all over the tree (looks like it’s been there for years), but it’ll still blooming in some parts. In addition to the presence of these bumps there is often also an emergence of unsightly black sooty-looking mold which develops resembling black dust on the leaves and bark of the crape myrtle plant.These are the defining characteristics which make up crape myrtle ba… Thanks! When drenching the soil with a systemic insecticide, allow several weeks for the product reach throughout the plant. Also just know even if the scale die they do not fall off. I always use chemicals as a last resort. 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