Rent Shop Volunteer Join

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.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Wednesday - April 10, 2013

From: Houston, TX
Region: Southwest
Topic: Non-Natives, Pests, Shrubs
Title: Doodlebugs in dead area of Coral Bean from Houston
Answered by: Barbara Medford

QUESTION:

I have a Firemans coralbean tree about 5 years old. I discovered yesterday in the middle of the tree there is some deadwood where we have pruned out branches. A couple of the branches were filled with doodlebugs eating the inside soft wood. Will those damage the tree? What do I need to do to control/eradicate them? Thanks,

ANSWER:

The closest we could come to the plant name you gave us is Coral Bean 'Fireman's Cap', Erythrina which is a hybrid Erythrina herbacea x Erythrinia crista-galli. Erythrina herbacea (Coralbean) is native to North America and to Texas, so it is within our area of expertise, which is plants native to North America and to the area in which those plants are being grown; in your case, Harris County. 

From Wikipedia: "Erythrina crista-galli is a flowering tree in the family Fabaceae, native to Argentina, Uruguay, southern Brazil and Paraguay." According to our research, that non-native plant is considered a tree, while we consider the native Coralbean to be a shrub, but they are closely related. This USDA Plant Profile Map does not show the non-native growing in Texas at all, this  USDA Plant Profile Map does show Erythrina herbacea (Coralbean) growing natively in Harris County.

All that actually is neither here nor there, you want to know about the "doodle bugs," which we used to call "pill bugs." We found descriptions of two different bugs that sounded like what you have:  

The first is Armadillidium. From Wikipedia: Armadillidiidae is a family of woodlice, a terrestrial crustacean group in the order Isopoda. Unlike members of other woodlouse families, members of this family can roll into a ball, an ability they share with the outwardly similar but unrelated pill millipedes and other animals. It is this ability which gives woodlice in this family their common name of pill bugs, roly polies, chiggy-wigs or potato bugs. The best known species in the family is Armadillidium vulgare, the common pill bug..

The second, Pill Bugs: this is an article from Northern State University in Aberdeen, SD. Note particularly this last paragraph in that article, which explains why neither of these bugs are damaging but perform a useful service in an ecology:

"Pillbugs form an important component of the larger decomposer fauna, along with earthworms, snails, and millipedes. All of these animals return organic matter to the soil where it is further digested by fungi, protozoans, and bacteria, hence making
nitrates, phosphates, and other vital nutrients available to plants. Although they may occasionally feed on roots, pillbugs do minimal damage to live vegetation and should not be regarded as pests."

What we took away from all this is that the bugs are attracted by moisture in the dead area. You may be sprinkling the plant too much, contributing to a certain amount of rot in the center of the plant.

 

 

From the Image Gallery


Coralbean
Erythrina herbacea

More Shrubs Questions

Name for paloverde look-alike near Colorado Springs
July 26, 2011 - I don't know where this plant comes from. However, I am wondering what the name of plant of the following description would be. It is a shrub, about 2 to 3 feet tall and wide. It grows in zone 6 t...
view the full question and answer

Identification of shrub from Kuala Lumpur
April 24, 2011 - I am seeing too much of shrubs used for landscaping that looks like dill, its stems are pretty woody and its leaves looks and smells like dill, are they the same? Can I consume this shrub that looks l...
view the full question and answer

Time of year to plant Texas Mountain Laurel in El Paso, TX
June 10, 2013 - When is the best time of year to plant a Mountain Laurel tree in El Paso?
view the full question and answer

Failure to thrive of Lantanas
August 06, 2008 - Here at work we have 4 beautiful yellow Santanas(should I say had), the leaves have started to turn brown and no longer blooming. Appears to have a fungus or disease. Please help!
view the full question and answer

Spring care for Garrya ovata from Pflugerville, TX
February 24, 2014 - Hello again, Mr. S-P, I planted a Mexican silktassel in April 2012 (purchased at the WFC). It has done well, but the leaves are bronzed and splotchy from this winter's freezes. All the stems are...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.