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
24 ratings

Sunday - April 03, 2005

From: LAWNDALE, CA
Region: California
Topic: Invasive Plants
Title: Where is marijuana plant native?
Answered by: Nan Hampton

QUESTION:

In what part of the world is the marijuana plant native?

ANSWER:

The origin of marijuana, or hemp, (Cannabis sativa), was the Causcusus region of eastern Europe, India, and Iran but now can be found growing all over the world in warm to temperate regions. You can read "A Description and Natural History of Hemp" from the University of Texas Institute of Cellular and Molecular Biology.
 

More Invasive Plants Questions

Can rose Zephirine Drouhin damage brick from Springfield IL
August 22, 2010 - Can ZÉPHIRINE DROUHIN damage brick?
view the full question and answer

Non-native, invasive mimosa trees in Vincennes IN
April 29, 2014 - I have 3 Mimosa trees here in Vincennes, Indiana and so far none of them are leafing out this spring (4-28-14) Do you think that this past winter could have killed then?
view the full question and answer

Identification of lantanas safe for use in Florida
February 10, 2008 - Why do you list lantana camara as a native to the U.S. and as a native plant in Florida? It is a category one invasive exotic on the Florida Exotic Pest Plant Council's list of invasive exotics. La...
view the full question and answer

Why is Asphodelus fistulosus (onionweed) forbidden by property owners assoications?
May 14, 2009 - Our local property owners association is imploring us to remove all onionweed (Asphodelus fistulosus L.). The USDA lists it as a noxious weed. Why? I think it is pretty and flowery. Is it poison...
view the full question and answer

Invasive horesetail in Belvedere CA
August 23, 2009 - Can I ever get rid of horsetail? It was planted without a barrier and is now in my garden, not quite everywhere yet.
view the full question and answer

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