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

Will a Honeysuckle Shrub Damage a House Foundation?
May 31, 2013 - I'm thinking about buying a honeysuckle bush. I would like to plant it close to my house. Can the roots of this bush cause any damage to the foundation to the house?
view the full question and answer

How to Overwinter Texas Sage in PA
June 12, 2015 - I live in northeast PA. I just bought a Texas sage tree. How do I care for it in the winter?
view the full question and answer

Plant for part sun in Nampa Idaho
May 20, 2010 - What could I plant in arid SW Idaho on the northwest side of my house along a border against the house? Most of the day this area is in shade, but at the hottest time of the day it gets a couple of h...
view the full question and answer

Plants for a Shady Woodland in MA
June 09, 2013 - Hello, I am looking for natives to plant in full shade or part shade. My house is in the mountain woodland area of Mt. Washington, MA. I am looking for grasses, flowers and shrubs. Also I am looking f...
view the full question and answer

Pests on American Beautyberry from Austin
June 25, 2012 - Something is eating the leaves of my American Beautyberry shrubs. One is almost stripped of leaves on the upper branches. I have looked and can't see any insects or caterpillars. I have also looke...
view the full question and answer

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