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
1 rating

Friday - March 26, 2004

From: Washington, DC
Region: Mid-Atlantic
Topic: Invasive Plants
Title: Smarty Plants Exotic Species
Answered by: Jil M. Swearingen, National Park Service

QUESTION:

What Makes an Exotic Species Invasive? (When is a Guest a Pest?)

ANSWER:

Many non-native species exist in apparent harmony in environments where they were introduced. For example, a relatively small number of exotic plants (e.g., corn, wheat, rice, oats) form the basis of our agricultural industry and pose little to no known threat to our natural ecosystems. The most important aspect of an alien plant is how it responds to a new environment. An invasive species is one that displays rapid growth and spread, establishes over large areas, and persists. Invasiveness is characterized by robust vegetative growth, high reproductive rate, abundant seed production, high seed germination rate, and longevity. Some native plants exhibit invasive tendencies in certain situations.
 

More Invasive Plants Questions

Management practices to eradicate Johnson grass
September 02, 2006 - Please suggest some eradication methods for Johnson grass. It is established in a field that I want to encourage native wildflowers/plants such as goldenrod, prairie coneflower, blue eyed grass, milkw...
view the full question and answer

Eliminating kudzu from Richmond KY
March 26, 2014 - I live in Richmond KY, Kirksville area. I have noticed that Kudzu has started to grow in my patch of land next to the creek. How can I get rid of this before it becomes a big problem?
view the full question and answer

Invasive iceplant in Hawaii
October 29, 2008 - Last time I checked Hawaii was in North America. Invasive or not, iceplant continues to be a much used ground cover etc for golf courses, sides of the freeway and many many City and County projects pr...
view the full question and answer

Eliminating a briar vine in American holly
July 22, 2011 - I have a wild vine (I was told it is a type of briar) living on my place. The root nest is like a potato. I have dug them up, I have sprayed them and I still am plagued with them. I have a beautiful A...
view the full question and answer

Introduction of King Ranch bluestem (Bothriochloa ischaemem)
August 04, 2008 - Hello, I am a graduate student from TAMUK and I'm writing my thesis concerning natives vs. Old World Bluestems. I was wondering if you could help me find a source that states: King Ranch (or KR) Blu...
view the full question and answer

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