En Español

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

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
Not Yet Rated

Tuesday - April 16, 2013

From: Baton Rouge, LA
Region: Southeast
Topic: Invasive Plants, Wildflowers
Title: White evening primrose from Baton Rouge LA
Answered by: Barbara Medford

QUESTION:

My husband and I have a disagreement about Mexican Primroses. I believe I have seen patches of them which are pure white. He believes they must be faded pink ones. Do white ones occasionally grow?

ANSWER:

If you follow this link to our webpage on Oenothera speciosa (Pink evening primrose), you will see that it shows both white and pink as bloom color. On that same page is Bloom Infomation:

"Bloom Color: White , Pink
Bloom Time: Feb , Mar , Apr , May , Jun , Jul
Bloom Notes: In southern parts of its range, blooms tend to be darker pink or rose and to open in the morning. Northern populations are often paler or white and night-blooming. An average coloration would have shell-pink blooms that transition to white in the center and are veined in a deeper pink. Flowers release a scent starting at dusk. In the most southerly parts of its range, from Chihuahuan Desert grasslands to northeastern Mexico, blooms whenever temperatures are above freezing. Elsewhere, blooms heaviest during spring, with blooms diminishing in size as the weather gets hotter. Each flower lasts only a single day."

Since the blooms last only a single day, we are inclined to agree with you that the white blooms you observe could not be faded pink blooms. Here is another article on the white evening primrose.  These bloom at night and attract night-flying pollinators.

 

From the Image Gallery


Pink evening primrose
Oenothera speciosa

Pink evening primrose
Oenothera speciosa

Pink evening primrose
Oenothera speciosa

More Invasive Plants Questions

Controlling poison oak or poison ivy in Iowa
April 29, 2010 - We recently purchased a property that is VERY wooded and has been vacant for two yrs. with little upkeep previously. We have (we were told) l00 yr old poison oak vines hanging from trees. We hired so...
view the full question and answer

Source for non-native, invasive Winter Honeysuckle from Austin
April 24, 2013 - Seeing Lonicera abiflora today reminds me of the "winter honeysuckle" my grandfather grew in San Antonio from 1920s or so through the 1950's. It was a bush with stiff upright stems and bloomed cre...
view the full question and answer

Getting rid of poison ivy
May 08, 2009 - Dear Mr Smarty Plants, Likewise I also have a shady area in my yard with overgrowth of poison ivy. It borders a small duck pond and we have a Golden Retriever. I too would like to plant soon afterward...
view the full question and answer

Problems with non-native Japanese privet from Glendale AZ
December 26, 2012 - We have Japanese privet shrub and they seem to be suffering from a disease, need help.
view the full question and answer

Control of white clover (Trifolium repens)
July 18, 2008 - our yard was remediated by ARCO in Rico Colorado. they brought in soil that must have been from clover fields. the soil produces tense low growing and fast growing clover with white flowers. it is inv...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | JOBS | SITEMAP | STAFF INTRANET
© 2016 Lady Bird Johnson Wildflower Center