Calvin Finch April Q&A

People shopping for flowers at milbergers

We have planted milkweed for the monarch butterflies. The milkweed is doing well but is loaded with aphids. Should we try to control them or can we just leave them be? Just leave them be. The milkweed should survive fine despite the feeding aphids. Hopefully, lady bugs and other predatory insects will reduce the population. Some gardeners spray aphids off with water from the hose. Any insecticide that controls aphids will also probably interfere with monarch egg laying, hatching and feeding processes.

Which is the best lawn grass for a high-traffic situation? We have two dogs and three children. If your lawn is in the sun, Bermuda grass has the most traffic tolerance. Zoysia grass is also traffic tolerant and has some shade tolerance.

What do you recommend for cut flowers in the garden? We have full sun. Zinnias and cosmos do well as cut flowers. Gladiolas are outstanding, but it is getting too late to plant them. Consider some of the tough roses. Belinda’s Dream, which is pink, Grandma’s Yellow and Mrs. Dudley Cross, which is peach, are easy to grow and provide a long season of cut flowers.

Should we try to remove the mistletoe from our mesquite trees? Is it killing them? Mistletoe is a parasite that adds some stress to the trees it parasitizes, but it is not a major problem. It can be cut off the branches but will return. There are no effective spray programs.

What are our choices for shrubs in the shade? Which are deer proof? The viburnums grow in the shade and are not eaten by deer. Some have attractive blooms. They come in small to large sizes and are evergreen. Pittosporum also meets the requirement for growing in the shade. The deer in my neighborhood do not eat it. Dwarf Chinese holly does well in the shade, as does dwarf yaupon holly. Again, the deer in my neighborhood do not eat them. Primrose jasmine is another deer-proof plant that grows in the shade.


CalvinFinch-mug-164x200Dr. Calvin Finch is Horticulturist and Urban Water Program Director at Texas A&M Institute of Renewable Natural Resources. You can ask him questions about about horticulture, water conservation and the environment by sending him an email Calvin.finch@tamu.edu.

8 Responses

  1. I live in Austin & have live oak trees in my back yard. I am wondering what causes the shoots that come up all over the yard. I was also wondering about adding mulch to the soil around the live oak trees. About how deep should the mulch be?

  2. What do you recommend to kill these nasty worms outside that are making their way indoors?
    Using the Home Defense Spray helps, yet is not eradicating them completely.

  3. When is best time to plant lemon tree.I had one that just died I think that spider mites on it,would that have killed it,also would it be better to buy it from the valley,i bought mime at home depot about three years ago,it was a Myers tree,thank you ,

  4. Pittosporum do wonderful in the shade, but are definitely not deer proof. I planted 5 plants in my front yard and as soon as the tender young leaves appeared, the deer would eat the plants down to just sticks. After nursing them for a couple of years, I replaced them with dwaft Chinese Holly which are doing just fine.

  5. I would say the “shoots” that come up everywhere, are grown from acorns that fall. My neighbor has many Live Oak trees and I have shoots come up from acorns falling into my yard and sprouting. Hope this helps a little.

  6. Calvin what can I do my front & back has weed that only way to kill it is to get down on my knees and pull them out my lawns are Bermuda grass thank you

    1. Broadleaf weeds in Bermuda can be effectively controlled this time of year with a product called Weed-Free-Zone by Fert-ti-lome. It is sprayed on, easy to apply and works quickly. Grass-like weeds are much more difficult and best controlled by applying a pre-emergent granular before the problem arises. Apply pre-emergent in October and March.

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