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 - May 02, 2007

From: Ooltewah, TN
Region: Southeast
Topic: General Botany, Cacti and Succulents
Title: 20 years to bloom
Answered by: Damon Waitt

QUESTION:

My girlfriend and i have come up with an interesting question, we were wondering if there is a plant in existance that takes over 20 years to bloom, and how many different kinds (if any) there are? We have bien pondering this for quite some time now and we can't figure out what to search for, any help would be greatly appreciated.

ANSWER:

There are a large number of plants that take over twenty years to bloom. For example, many Agaves typically bloom every 8 to 20 years. The plant produces a single flower stalk 10 feet tall during the spring or summer and then dies. Colonies are maintained by "pups" or offsets that grow from the base of parent plants. Many species of bamboo can take even longer to bloom. Bamboo goes from 20 to over 100 years between flowering. Try searching the web for "Century Plant" or "Bamboo" to learn more about these species.

 

From the Image Gallery


Parry's agave
Agave parryi

Havard's century plant
Agave havardiana

Thorncrest century plant
Agave univittata

More General Botany Questions

Are Prunus minutiflora male and female flowers on different plants?
March 12, 2014 - I have a Prunus minutiflora and have recently learned the male and female flowers are on separate plants. How can I determine if I have a male or female plant?
view the full question and answer

Drawings of Illinois native wildflowers
July 15, 2006 - I am looking for line drawings of Illinois Native Wildflowers to use for educational material for visitors to our new City Park. We plan to have signs throughout the park describing how Native Americ...
view the full question and answer

Brownish-gold worm-looking things on loblolly pines
May 08, 2015 - We have a large loblolly pine that each spring drops thousands of brownish-gold "worm" looking things (about 1/2 to 1" long). Do they have a name and what is their purpose?
view the full question and answer

Guide for plants for landscaping in Central Texas
October 22, 2008 - I am new to Texas and want nothing but native plants. What is the best book or guide so i can see the plants, flowers, shrubs and trees and know best what part of the yard to plant them in? I live i...
view the full question and answer

Can plants in the same genus cross-pollinate?
March 27, 2009 - Can you cross-pollinate plants from the same genus?
view the full question and answer

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