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Crape Myrtle Update - tree trimmer

At our Rose Society meeting last month one of the horticulturalists told me that it would not hurt the crape myrtles to cut them to the ground. I had already cut them to about 3 feet, and cut out the small side branches and everything from the ground except for the large trunks - leaving only about 3 "stalks" at the most.

I had already sprayed them with Bonide horticulture oil (the only one without insecticide). I asked my husband for help, and he brought out the tree trimmer. That thing took about 4 seconds a plant. When I bagged up the remaining stalks, they were loaded with those scale. I highly recommend the tree trimmer, and a person large enough to handle it. (I could handle it for a tree, but I don't think I have the strength to handle using it horizontally to cut the crape myrtles.)

After I cleaned up everything, I sprayed them again with oil. I missed one little one, and see that it does have scale.

My garden has loads of ladybugs. They are working hard, and I am so pleased that I have not sprayed for many years now. I intend to get some new trees started, and start some on the hill that goes to the creek (ravine). I will give the crape myrtles a chance to grow, and be clean, but would rather have to take out a new tree than to end up with nothing.

I will look for the trees suggested plus Forsythia and Red bud, There was an article in the paper about dogwood. When I looked it up online, the information sounded rather bleak to me. It indicated that the dogwood tended to be susceptible to diseases, and fungus. Has this been your experience.

Sammy


Comments (3)

  • 9 years ago

    I hope cutting them back and using the horticultural oil saves them, Sammy, so you don't have to give them up.

    In my county, where the soil and water generally are pretty alkaline, Flowering Dogwood (Cornus florida) just does not grow well, if it even grows at all. They generally prefer moist, acidic, rich soil high in organic matter in part shade, and have to be watered a lot in the summer---so nothing about my area is right for them. They also have trouble with aphids, scale and borers, and several diseases plague them. Consequently, I never see them here and don't know anyone who has one in our area. I think they are very beautiful when grown in the right conditions, at least during their bloom period, but they require a lot of care. Far to our east in McCurtain County, they do pretty well in the Broken Bow area so I know there's places in OK where they can thrive.

    We have a native dogwood here that tolerates our alkaline soil and water. It is called Roughleaf Dogwood (Cornus drummondi). It is an understory tree that really is more of a shrub than a tree, and it suckers persistently and forms groves. Ours only get maybe 10' tall, max, and grow aggressively. They are common along rural fencelines where they mix in with the native plums and other trees that birds like to plant. Once you have them, you never can get rid of them. They have white flowers followed by white berries, and while I love them while they are in bloom, and I think the white berries look nice.....the foliage of the trees always has various fungal type spotting and stuff. They look really pretty from a distance, and then when you get up close and see the diseased foliage, that prettiness fades.

    I'd never plant one in our landscape on purpose, but we inherited some that were on the property when we moved here and our attempts to cut them down failed, as it only seemed to encourage them to come back strong and with lots of suckering and new trees. So, they live on undereath our pecan trees and I just ignore them. I planted four o'clocks around them and the four o'clocks are so pretty while in bloom that it makes up for the foliage on the roughleaf dogwoods looking so bad all the time. Since they're in the shade of the pecan tree, the four o'clocks stretch for light and get leggy and often attain 5-6' in height in the summer, so they help hide a lot of the dogwood foliage.

    If you're looking for a low-maintenance tree, I'm not sure flowering dogwood fits the bill. Perhaps they will do a lot better there if you've got the kind of soil they need. I think they do best in a soil pH around 5.5 or so. Mine runs 8.2, so you can see why we cannot give flowering dogwood trees the conditions they need here.

    Variety selection is important too because flowering dogwoods come in different sizes, and many of them easily get 25-30' tall. I know there are some cultivars that stay significantly shorter.

  • 9 years ago

    Thanks, Dawn. Our soil is also alkaline. We need to be careful to amend the soil for the roses, but I appreciate all the reasons to avoid dogwood.

    Sammy

  • 9 years ago

    You're welcome. I love them. I wish I could grow them. I just know that I can't.