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
1 rating

Thursday - September 24, 2009

From: Sugar Land, TX
Region: Southwest
Topic: Non-Natives
Title: Non-native cannas in Sugar Land, TX
Answered by: Barbara Medford

QUESTION:

I just planted some beautiful canna lilies along my fenceline (about 8 inches off the property line and 2 ft between each plant). My neighbor complained that they were going to go wild and sprout up on her side of the fence. I put up mesh netting to keep the leaves from poking through the fence as they begin to grow. Should that keep them on my side of the fence?

ANSWER:

The Lady Bird Johnson Wildflower Center is committed to the use, care and propagation of plants native not only to North America but to the area in which they are being grown. The only cannas native to Texas are Canna glauca (maraca amarilla) and Canna flaccida (bandanna of the Everglades). Canna indica is native to Central and South America and most of the other cannas are grouped under the name Canna x generalis, so extensively hybridized that there is no telling what the parents of a particular plant were or what their general characteristics will be. Both being hybridized and being non-native put them out of our range of expertise. 

Since Canna x generalis (Floridata), as well as other named cannas, spread by rhizomes underground, mesh to keep the leaves from poking through is not going to make much difference. In southeast Texas, those rhizomes will continue in the soil over winter, and sprout new plants next year. We have heard complaints about cannas "taking over," but found no indication in our research that they are considered invasive. If your neighbor dislikes the cannas, she can dig the rhizomes out on her side as they come up. If you care about your neighbor's opinion, you can move the canna rhizomes to someplace on your property not so near theirs. This can be done over the winter. 

 

More Non-Natives Questions

Non-native, invasive Datura sprouting from compost
September 26, 2005 - Hi, I have a plant growing out of some compost we purchased this spring and no one can tell me what it is. It's about 4 ft. tall, the stem is maroon like rhubarb and it produces 4-5 in. tubular lig...
view the full question and answer

Getting rid of invasive, non-native Ailanthus altissimma, Tree of Heaven
July 21, 2008 - We live in Granite, MD and are trying to get rid of an invasive "tree of heaven". Based on a recommendation from a website dedicated to eradicating invasive plants,my husband cut down the tree which...
view the full question and answer

Problem with non-native Houttuynia cordata (chameleon)
January 30, 2012 - I have a Houttuynia cordata chameleon plant in a clay pot. My zone is 9b and my yard is partial sun. Up until January, it was thriving. Now, it is dead. I think the cold killed it. I kept it moist at ...
view the full question and answer

Plants for slope in central Alabama
July 26, 2011 - Our home is atop a 20-25' eastern facing sandy loam slope in central Alabama. It was previously covered w/ kudzu. After 3 yrs. of eradication of the kudzu we are ready to plant with native grasses/pl...
view the full question and answer

Powdery growth in hydrangea in Philadelphia
June 20, 2010 - My hydrangea plants have a weird growth on their leaves that looks like white rice. It looks like it would be powdery if brushed, but I don't want to touch it for fear that it some type of mold. Any...
view the full question and answer

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