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?


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 - June 22, 2007

From: Paonia, CO
Region: Rocky Mountain
Topic: Invasive Plants
Title: Percentage of plants native to U.S.
Answered by: Damon Waitt


About 50% of the plant species in Hawaii are naturalized, invasive, aliens (from other places). What are equivalent statistics for the lower 48 states (continental US) as a whole?


Of the approximately 29,244 non-Hawaiian taxa listed in the USDA Plants database, 26,613 or 91% are listed as Native to the U.S. At best, Mr. Smarty Plants would say this is a rough estimate.





More Invasive Plants Questions

Removal of Invasive Mint
April 23, 2011 - The herb Mint is taking over my flower garden. How can I kill this out? Thank you,
view the full question and answer

Top soil dressing for bermudagrass
February 25, 2009 - Need to apply top soil dressing to bermudagrass. Can you suggest any type? This area is heavy clay soil and need to even out the lawn as well as feed the grass.
view the full question and answer

Are These Plants Natives for Flower Mound, Texas?
September 24, 2010 - We are having our flower beds reworked and these are the plants that the company is recommending to plant. I would like to know if these plants are native to our area:pink muhly grass, lythrum, lorope...
view the full question and answer

Nativity of Lantana camara and Strelitzia reginae
November 08, 2011 - I was wondering why Lantana Camara is not in the Wildflower's database. Multiple sources say it is native to the U.S. and North America. I was also wondering if Strelitzia reginae (Bird-of-Paradise...
view the full question and answer

Nutgrass in Lakeway TX Habiturf
September 30, 2012 - I just installed a new septic system with drip field. Planted habiturf over the whole area. The habiturf is doing good, but I was away for a while and the nut grass has taken over several areas. It s...
view the full question and answer

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