En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Care for non-native Mexican ruellia in Monroe LA

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.

Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Tuesday - October 27, 2009

From: Monroe, LA
Region: Southeast
Topic: Non-Natives
Title: Care for non-native Mexican ruellia in Monroe LA
Answered by: Barbara Medford

QUESTION:

Dwarf Mexican Petunia I have found information that late in the season, when growth becomes leggy, cut back plants by as much as a half to force a new spurt of growth. Watch for tobacco bud worms, aphids, snails, and slugs. What is the most effective plan for controlling the above problems? I have grow beds and all my potted plants both in the hoophouses and out in the open are on black ground cover secured with six inch staples.

ANSWER:

You are really dedicated to those ruellia; we believe we just answered a question from you about holes in the leaves of your ruellia. They are, as we mentioned to you in our last answer, still not native to North America, and therefore out of our range of expertise.

In fact, the holes in the leaves that you asked about last time may very well have been caused by slugs or snails, the bane of any plant that is in moist soil and shading the ground for the beasties to hide. From The Garden Helper, we found this information on Controlling Snails and Slugs in Your Garden.

Apparently the tobacco budworm is quite a pest of geraniums and petunias, and this University of Florida Entomology Dept. website  on Tobacco Webworm has some suggestions, but no guarantees, on control. 

Aphids are really pretty easy to control-a good squirt of water or, if you are really serious, a good squirt of soapy water, will wash them off and they can't get back onto the plant. This University of California Integrated Pest Management website discusses the control of aphids in more detail.

As for trimming your plants back in the Fall; this is always a good idea with perennials. We like to leave about 6 inches of the stalk so we will know where they will begin to emerge in the Spring and not accidentally mistake them for weeds and yank them out. 

 

 

More Non-Natives Questions

Non-native tropicals for Syracuse, NY
August 10, 2009 - I live in upstate New York but am a fanatic about tropical plants, palms and banana trees. They're obviously all in pots that I take indoors, and I lose them from time to time. (Had a coconut palm th...
view the full question and answer

Growing Plumeria in Ohio
July 15, 2008 - Can I grow plumeria in Ohio? We were in Hawaii this past week and I brought two plants home to try to grow. Thanks a bunch.
view the full question and answer

Information on non-native Knock Out Rose
July 30, 2007 - I am trying to find out some information about a Knock Out Rose. I dont know the scientific name for it. I have been to different web sites to find pictures, size etc. and can find nothing. Any help ...
view the full question and answer

Problems with non-native Ixora
April 22, 2009 - I have 3 Ixoras I planted last summer and they did beautifully -- then Ike visted us. All the other plants in that garden have recovered and look beautiful, but the ixoras still look ill. No new gro...
view the full question and answer

Plants for full-sun landscape
November 20, 2007 - I live in a very rocky area just outside of Fort Worth, TX. It's taken me all spring, summer & now I'm going into the fall, to landscape just 30 feet in front of my house. The front of the house get...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center