En EspaŅol

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
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 - May 19, 2009

From: Denton, TX
Region: Southwest
Topic: Non-Natives
Title: Problems with non-native impatiens in Denton, TX
Answered by: Barbara Medford

QUESTION:

Dear Mr. Smarty Plants, 4 weeks ago I planted a shady bed (2'x10') with impatiens for the third year in-a-row. Previously, the plants thrived & bloomed till November. Three weeks ago, something that looked like a thin layer of white salt appeared on the leaves and stems of 2 of the plants. We've had, at least, 2-3 days of rain a week since then. After each rain, the "salt" appeared on another 2-3 plants and now has spread the length of the bed, including on my large purple wandering jew (and on the leaf mulch surrounding the plants). After the "salt" is wet it looks like brown sand with 2 tiny "antennae." It doesn't cover each plant, just about a third, and, so far, hasn't affected blooming or growth. I am most concerned about it spreading to the rest of my garden, separated by a 2' sidewalk.

ANSWER:

The Lady Bird Johnson Wildflower Center is committed to the care, protection and propagation of plants native not only to North America but to the area in which the plant is being grown. Since Impatiens wallerana is native to Africa, from Tanzania to Mozambique, it will not appear in our Native Plant Database. We found an excellent website from the University of California Integrated Pest Management site on Pests in Gardens and Landscapes: Impatiens wallerana. On the upper right hand side of this webpage are two columns of links to "Invertebrates" (bugs) and "Diseases". Follow each of those links, all of which have pictures that will help you identify your problem. There are also suggestions for treatment. 

 

More Non-Natives Questions

Need some help with a Plumbago plant in Mission, TX.
August 06, 2010 - Hello..I live in south South Texas and have a plumbago. It gets about 4 to 5 hours of direct sun and lately some of the branches and leaves turn bright green almost yellow. Am I over watering or is ...
view the full question and answer

Vegetable garden in Ballston Spa, NY
August 02, 2011 - I never got my veg. garden in this year. Are there any late crops I can still plant at this late date in Ballston Spa, NY? Thanks.
view the full question and answer

Vine Choices Scarce in Beaverton Oregon
June 08, 2012 - Hi, I am looking for a hearty vine that we could use to cling to and cover a cement wall that is about 8 feet tall and 30 feet long. It is on the south side of our house but never gets direct sunli...
view the full question and answer

Non-native vines poisonous from Bakersfield CA
May 17, 2013 - Are pink bower vines and stars and stripes mandevilla toxic to dogs?
view the full question and answer

Care of potted non-native geraniums
July 26, 2009 - I live in lower Michigan (Mt. Clemens) and recently purchased 2 small, potted geraniums. They are a beautiful vibrant red in color. As the blooms wilt and turn dark, should I snip that part off the st...
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