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

Wednesday - May 09, 2007

From: Austin, TX
Region: Southwest
Topic: Non-Natives, Vines
Title: Slow flowering wisteria
Answered by: Jimmy Mills

QUESTION:

We have a young wisteria growing on the side of the house. It began to flower this year for the first time. Whereas my neighbors' wisterias all bloomed in February, ours has only begun to bloom in mid-April. Is it possible that our wisteria is native, wisteria frutescens?

ANSWER:

You may have the native American wisteria (Wisteria frutescens), but more likely you have either the non-native Japanese wisteria (W. floribunda) or the Chinese wisteria (W. sinensis). Whichever it is, the wisterias are notoriously slow to flower. This may be caused by a combination of factors including the age of the plants, the amount of sunlight, and nitrogen levels in the soil. Older plants are more likely to flower, plenty of light is a necessity, and high nitrogen levels, vis-a-vis phosphorous, reduce flowering.

As to the identification of the plants, one fairly reliable characteristic distinguishing the different species is the length of the flowering cluster (raceme). W.floribunda is the longest with 12-18 inch racemes; W. sinensis follows with 6-12 inches; and W. frutescens is last with 4-6 inch racemes.

Check the following sites for even more information about these beautiful plants. Oregon State University Department of Horticulture, and Growing Wisteria from the Ohio State University Extension Service

 

 

 

 

 

 

 

 

More Non-Natives Questions

Care of non-native Navel Orange tree
January 27, 2008 - What kind of care does a Navel Orange tree need? Mine looks really bad this year, not much fruit and small fruit.
view the full question and answer

Freeze problems with non-native weeping willow in Joplin, MO
May 13, 2010 - My weeping willow had leaves forming and a frost hit and now the tree looks like it is dead. Everything else is in bloom and I don't know if the frost killed my tree or if I need to wait to see if it...
view the full question and answer

Moving non-native globe willow in Mansfield TX
August 10, 2009 - I have a globe willow that we planted in a little landscaped area out front of house not realizing how large top would get. Can I move the tree without damaging it? It is about 9 ft tall, 5-6 ft wid...
view the full question and answer

Transplant shock in non-native crape myrtle from Wesley Chapel, FL
June 12, 2012 - I just bought a 12 ft. crape myrtle and planted it, giving it plenty of water I think. After 3 days the leaves are wilting and flowers are falling off.
view the full question and answer

Pruning smoketree in New Jersey
May 29, 2009 - How far from ground level do I prune a relatively young Smoke tree to get the bush effect?
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