En EspaŅol

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
2 ratings

Thursday - March 26, 2009

From: Abilene, TX
Region: Southwest
Topic: Compost and Mulch, Propagation, Pruning, Herbs/Forbs
Title: Stubs of Texas Star Hibiscus in Abilene, TX
Answered by: Barbara Medford

QUESTION:

We have cut back our outdoor Texas Star Hibiscus for 4 years and now have a large number of old stubs that the new growth must navigate around. Will it kill the plant if we dig up the old stubs? At some point it would seem that they will need to be removed.

ANSWER:

The funny thing about Hibiscus coccineus (scarlet rosemallow), also called "Texas Star Hibiscus" is that, while it is native to the Southeastern United States from Florida to Mississippi, it is not native to Texas. At some point, someone in the nursery trade decided it would sell well with the name "Texas Star" and it has done so. That has nothing to do with your question, we just think it's amusing. Anyway, yes, go ahead and remove those stubs. We're a little surprised they have persisted. We always cut ours back in the fall, leaving the stub to identify where the plant is, but it usually just sort of disappeared after the new plant came up. Our suggestion is to start by giving the stub a gentle tug, rather than digging it out. Hopefully, it will break off, or just come up with vestiges of its old roots clinging to it. Digging out the stub could damage the developing roots of the new season's plant that is beginning to emerge. If you really want to clean up the area and make a new start, this plant can be propagated by root division. Since it is a late starter and does its blooming in the late summer, now would probably be a good time to do that. In doing so, you would be able to easily separate out the dead stems and roots, clean up any litter around the planting area, and perhaps throw in a little fertilizer (not high nitrogen lawn fertilizer, as that inhibits blooms), maybe some compost and you will likely have a whole bunch of vigorous new plants. 


Hibiscus coccineus

Hibiscus coccineus

Hibiscus coccineus

Hibiscus coccineus

 

 

More Pruning Questions

Roots in foundation of home in Audubon NJ
February 17, 2012 - I live in an old house (almost 90 years old), and within the past year I have noticed in one area the concrete basement floor breaking. Today I finally made time to investigate. In these old houses ...
view the full question and answer

Trimming live oaks in Mamou LA
August 24, 2009 - We have 3 large Live Oak trees in our yard. The problem we are having is when we trim a branch off so we can walk under the branch, the whole branch dies back. Is there a certain way to trim the limbs...
view the full question and answer

Pruning and deadheading rosa rugosa while blooming
August 01, 2008 - Can you prune the dead flowers and branches of rosa rogosa while it is still blooming?
view the full question and answer

Pruning of tree poppy from Livermore CA
May 29, 2013 - We have a Dendromecon rigida which has been in place for about 10 years and is doing fine. But the older growth gets dry, brown and crinkly, while the newer growth is bright and lush. I would like t...
view the full question and answer

Pruning smooth azalea in NJ
July 12, 2011 - I have a Smooth Azalea growing in my woods. It was verified by the Master Gardeners of Burlington County New Jersey. It's 12 feet tall and lanky. Can it be trimmed in hopes of thickening up? If s...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center