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 - 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

Sandbur invasion in Mission TX
June 08, 2011 - I have a spiny sandbur invasion in my yard. Even the dog tiptoes around to do her business. Because I live in Mission, TX, this weed acts like a perennial and is constantly growing (no winter freezes...
view the full question and answer

Groundcovers to choke out invasive species in Virginia
June 08, 2015 - My yard has open woods and dappled light with clay soil. Thirty years ago we removed huge briars and since English Ivy was getting in by itself, we thought we would let it come; unfortunately, it not ...
view the full question and answer

Control of Paulownia tomentosa from Westminster MD
October 28, 2011 - I have heard that there is a type of herbicide that is to be applied to slashes made in the outer layer of invasive trees such as Paulownia. This type of application is reputed to prevent the little ...
view the full question and answer

Is conium maculatum safe for cataracts from Wewoka OK
September 12, 2009 - My doctor has prescribed conium maculatum for my cataract problems. Is this safe to use in the eyes?
view the full question and answer

Controlling Passionflora Incarnata propagation
March 20, 2012 - Would a cinderblock raised bed, 8 inches in height, be sufficient to contain the roots of passiflora incarnata and keep them from traveling to places where I don't want the vine? Are the roots deepe...
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