Host an Event Volunteer Join Tickets

Support the plant database you love!

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 28, 2010

From: Austin, TX
Region: Southwest
Topic: Pruning, Cacti and Succulents
Title: Can I save my century plant by cutting the flowering stalk in Austin, TX? Probably not.
Answered by: Jimmy Mills

QUESTION:

Our century plant is starting to sprout it's flower (four feet). If we cut it down can we save the plant? Thank you.

ANSWER:

The Century Plant Agave americana (American century plant) is a spectacular plant, and part of that spectacle occurs when it flowers. Now it doesn't take it one hundred years to flower, but to some folks it seems that way. The plant has a monocarpic or semelparous life cycle which means that it will flower only one time and then die.

From the reading that I have done, removing the flowering stalk will not keep the plant from dying. Flowering is controlled by changes in hormonal levels that affect the allocation of resources inside the plant that eventually lead to its demise.  A lot of energy and resources are expended by the plant in producing the flowering stalk and the flowers.

If you wish, you can remove the stalk and see what happens. I think it would be more fun to watch the flowering proceed; maybe make a photo log.

The plant should be producing pups which can be used to propagate new plants .

We get questions similar to yours from time to time, so I have created links to several previously answered questions below:

#1587

#1427

#4082

 

 

More Pruning Questions

Will a cut back yucca grow back in Lockbourne OH?
October 28, 2009 - I live in Ohio and recently I cut back all my plants to prepare for winter. I am wondering if my Yuccas will grow back. I cut them to ground level so only a little bit of the leaf is showing. I was...
view the full question and answer

Pruning for native oak in Houston
October 06, 2008 - I have an oak tree, and I was wondering if I prune from the top down, would it get fuller at the bottom? Or can you tell me how to prune it? I have been pruning from the bottom up and it is growing ta...
view the full question and answer

When to prune Texas betony (Stachys coccinea)
May 28, 2007 - I bought Texas Betony plants several years ago at Wildflower Days. They are thriving, but a bit leggy. Somewhere I read that they should be cut back several times during the year. Now I can't find...
view the full question and answer

Lilies not blooming from Austin
May 03, 2013 - Last December 8, you published a letter in the Statesman that I had written to you regarding Rain Lilies, Oxblood Lilies, and Copper Lilies. The were sprouting in my garage in a bag. You recommended...
view the full question and answer

Branching on plants
March 14, 2008 - Hi Mr SmartyPlants, I would like to cause my cerus peruvinesus (sp?) to branch low to the ground and another plant to branch higher up..what causes branching & how can I duplicate this?
view the full question and answer

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