Contact Us Host an Event 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

Friday - February 25, 2005

From: London, Other
Region: Select Region
Topic: Cacti and Succulents
Title: How do cacti stay in ground
Answered by: Nan Hampton

QUESTION:

How do cacti stay in ground? I know that flowers stay in the ground by their roots but what about cacti?

ANSWER:

Cactus have roots, too. Some have shallow spreading root systems and some have large tap roots or a cluster of tubers. An old night-blooming cereus (Peniocereus greggii) can have a very large tap root weighing as much as 100 pounds. to read more about cactus, you can visit the Cactus Museum web page. The cacti use their shallow roots to absorb water when it rains, but many of these roots may die when it becomes dry. Read about How Cactus Survive in the Desert.
 

More Cacti and Succulents Questions

Speeding up growth of Hesperaloe parviflora (red yucca)
January 12, 2012 - I have germinated Hesperaloe parviflora, Red Yucca, for our Caddo Native plant sale. I have kept in the cool greenhouse for 2 months and they are about 2 inches. A friend put one outside and they froz...
view the full question and answer

Why are the leaves of my century plants yellowing?
June 22, 2009 - I am taking care of the Agaves (century plants) for my condo community here in Austin. They are planted in 18" or 20" pots. A couple of the plants have leaves that are yellowing around the bottom....
view the full question and answer

Survival of yucca plant mowed down in Oklahoma
April 15, 2009 - I have a yucca plant that came from a very old plant of my late father, and had transplanted it 6 years ago and it came back every year and bloomed. This morning I went outside and noticed my husband...
view the full question and answer

Does cutting off the budding agave bloom save the plant from Sunrise FL
April 30, 2010 - I have an Agave(century plant) just starting its long flower stalk. I have read the mother plant will die after flowering. Can I cut off the stalk before it flowers to save the plant? If not, how do i...
view the full question and answer

Tropical-looking landscape in Austin, TX
March 24, 2005 - I'd like to have a tropical-looking landscape in my front yard. What plants would you recommend for Austin, Texas? I would prefer plants that can stay outside year-round, but will take suggestions on...
view the full question and answer

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