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
1 rating

Tuesday - August 31, 2004

From: Philadelphia, PA
Region: Mid-Atlantic
Topic: Non-Natives
Title: Care of non-native, hybrid petunias
Answered by: Stephen Brueggerhoff

QUESTION:

I have a beautiful Petunia Tiny Tunia Violet plant which has been flowering nicely (in sun and shade environment). Suddenly, a few days ago, it began to look like it's dying--stalks all dried out. Is this normal? I have kept it moist. Should I cut it back and will it bloom next year? It is a perennial, isn't it?

ANSWER:

Hybrid garden petunias should be watered regularly, placed in well-draining, compost enriched soil. The plant may be responding to too much water; stem die-back like you have described is the result of a vascular problem, resulting from roots drying out from too little water, or root rot from too much water. The roots may also be affected by a soil fungal pathogen. If the roots die, then there is no nutrient and water delivery to the stems/vegetative tissue, causing the vegetative tissue to die. If the soil is remaining moist, allow the soil to dry out a bit and water sparingly. You may have to propagate vegetatively if the plant is in continual decline. You can reference this website for more information about petunia horticulture.
 

More Non-Natives Questions

Looking for an apple tree to plant in Austin, TX.
December 08, 2010 - I want to plant an apple tree in my yard that bears fruit and will provide habitat and shade. Are any varieties that will do well in the South Austin area? And do I have to plant two trees to get fru...
view the full question and answer

Care for non-native cat palm
November 18, 2010 - Purchased 3 new cataractarum palms-3ft. high for indoors--how can I know when to water or how often?? I am from Canada & in Naples Florida for 6 months--I am a novice to these plants
view the full question and answer

Possible invasiveness of non-native Eragrostis curvula
February 04, 2008 - I have just moved to Keller, TX and am trying to establish a xeriscape plan for our property. I chose to plant weeping love grass as I learned it was a native plant and did not require fertilizing, a...
view the full question and answer

Fungus on trunk of non-native weeping willow in California
August 21, 2008 - I live in Palo Cedro, CA and have a weeping willow tree with with what appears to be be some type of fungus growing all over the trunk of the tree. It is a brown color and can be broken off in big ch...
view the full question and answer

Looking for non-native Chinese Pistache tree
April 23, 2015 - Where in the Austin area would be a good place to find a nice sized Chinese Pistache to plant in my yard?
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center