Native Plants
Q. Who is Mr. Smarty Plants?
A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
rate this answer
Thursday - March 15, 2012
From: Driftwood, TX
Region: Southwest
Topic: Pests, Trees
Title: Moths around Sophora secundiflora from Driftwood TX
Answered by: Barbara Medford
QUESTION:
Sophora secundiflora Our Mountain Laurel has a lot of large moths flying around it. Should we be concerned? Will they hurt the tree? thank youANSWER:
We thought we were looking for moths as pollinators of Sophora secundiflora (Texas mountain laurel), but we found a USDA Forest Service site on the plant, which included this statement:
"Pests: Plants are primarily pest-free, except for infestations by caterpillars of a moth in the family Pyralidae. Caterpillar infestations of mescalbean sophora have been controlled biologically with a strain of bacteria (Bacillus thuringensis), which causes the caterpillars to sicken and die. Insecticide sprays such as Sevin ordiazinon may also be useful."
Then, we found a previous Mr. Smarty Plants question on the Genista moth:
"Bottom Line: We learned that the Genista is a web producing caterpillar that attacks Texas laurel, crape myrtle, honeysuckle, and Laburnum. Larvae defoliate as well as spin webs. We would appeal to you not to employ pesticides, as they can do much more harm than good to the surrounding vegetation, butterflies, soil and water supply. Whatever is eating your plant, if you would rather not have a chewed-on plant, we suggest you pull it out. There is no point in wasting scarce resources on a plant that is not satisfactory to you."
Our take on this is that if you begin to see caterpillars on your Texas mountain laurel, and you feel they are damaging the plant, then you might consider trying the Bacillus thuringensis treatment as suggested by the USDA Forest Service. Remember that moths are often important pollinators of various plants, so don't spray pesticides on them, but treat only the caterpillars.
From the Image Gallery
More Pests Questions
Landscaping for slope in Kansas City
October 08, 2008 - We have a down sloping back yard and patio on the lower area. We need some water absorbing plants near the foundation and some in the front of the house, where water isn't a problem. We are allergic ...
view the full question and answer
Control of borers attacking Prunus serotina
August 30, 2006 - Where can I find information to control borers that seem to attack only Prunus serotina v. exemia?
view the full question and answer
Goat damage to Arizona Cypress from Palmdale CA
June 28, 2012 - My goats stripped the bottom branches of my Arizona Cypress. Will they come back and how can I prevent future damage?
view the full question and answer
Possible webbing bark lice on oak tree
August 08, 2008 - We live near the Center and have a large live oak tree in our yard. Recently the lower trunk has been covered with thin, white weblike material (not sure if spider web). What could this be and is it d...
view the full question and answer
Do white-tailed deer consume King Ranch bluestem?
October 25, 2013 - Will white-tail deer in central Texas consume King Ranch bluestem ?
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |