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 - July 23, 2008

From: Lindale, TX
Region: Southwest
Topic: Cacti and Succulents, Grasses or Grass-like
Title: Is Sedum recommended for a greenroof project in Houston
Answered by: Nan Hampton and Mark Simmons

QUESTION:

Would you recommend using Sedum for a green roof project in Houston, Texas? Will the humidity effect the sedum? If sedum would be a poor choice, what would you recommend for Houston?

ANSWER:

No. Most sedums tend to come from dry temperate climates and from shallow or very well drained soil. In wet subtropical areas they can suffer from rot and can be out competed by weeds during wetter times of the year.

We tend to favor locally native plants that can tolerate a wide range of climate and soil conditions (i.e. those which have "generalists" traits)—most of the common and widespread prairie grasses and forbs would fall into this category. Selecting your species from this palette would increase your chance of success—you just have to decide what you want your roof to do (hold storm water) or how you want it to look (spring wildflowers). Please visit our Native Green Roofs page for more information about green roofs and a native species list that we are currently testing.

 

More Cacti and Succulents Questions

Problems with Strawberry Hedgehog cactus from Temple TX
June 03, 2012 - I had purchased a Strawberry hedgehog Cactus (echinocereus stramineus) a few years ago from the Wildflower Center's annual plant sale and planted it then. It has now started to brown from bottom to t...
view the full question and answer

Agave with large stem growing
May 01, 2011 - It is a large stem growing from my agave plant in the middle of it. It looks scary and ugly, what is it? Is it poisonous? Is it rare? It gets taller and taller everyday, what to cut it.
view the full question and answer

Century plant dying after bloom
August 12, 2007 - My century plant is so tall that it is up to the top of the telephone pole top lines that carry our streets electric. I was wanting to know if you knew if I cut the stock off would it save the plant ...
view the full question and answer

Replanting a blue agave in Rio Rancho NM
January 11, 2010 - I have acquired a Blue Agave, approximately 4-5 ft high. It still appears quite healthy. It was used over the holiday season for display purposes in a liquor store. Unfortunately, the root ball has be...
view the full question and answer

Sun loving plants for flower bed by the pool in Weatherford Texas
October 03, 2011 - We have a 40' long x 2 1/2' wide flowerbed along our pool. It is in full sun with the pool deck across the front and a 6' privacy fence across back. Also, the level of the bed is 18" below the l...
view the full question and answer

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