Native Plants

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?

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

6 ratings

Wednesday - December 09, 2015

From: Cedar Park, TX
Region: Southwest
Topic: Planting, Vines
Title: When to Plant Texas Wisteria?
Answered by: Anne Van Nest

QUESTION:

When is the best time to plant Texas Wisteria, Fall or Spring?

ANSWER:

Late winter is a good time to plant Texas (American) wisteria (Wisteria frutescens). Early spring will be fine as well.

American wisteria is a high-climbing woody, deciduous vine, 25-30 ft. long. Shiny, dark-green, pinnately compound leaves bear 9-15 leaflets which are opposite on the leaf stem, with 1 leaflet at the tip. The flowers are in large, drooping clusters 6–9 inches long that appear after the plant has leafed out, a difference from the popular Asian species.

American wisteria is often used as an ornamental planting and has probably escaped from cultivation in many locations. In Texas, the Dam B cultivar has blue flowers in racemes and flowers late May to June and sporadically throughout the summer and fall. A cultivar called Nivea has white flowers.

The blooms only appear on new wood. Individual flowers are nearly 1 inch long and are lilac or bluish purple and quite fragrant. A brown, bean-like pod persists until winter. This species is less aggressive than the similar Asian species. Prefers a good loamy soil in a sunny south or southwest facing position, sheltered from cold winds and from early morning sun on frosty mornings. Plants can become chlorotic on alkaline soils. Prefers a rich soil, but some gardeners feel too rich a soil results in too much leaf growth. Tolerates seasonal flooding.

From the Image Gallery

American wisteria
Wisteria frutescens