Host an Event Volunteer Join Tickets

Support the plant database you love!

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
1 rating

Tuesday - April 29, 2014

From: Brookshire, TX
Region: Southwest
Topic: User Comments, Herbs/Forbs
Title: Synchronized blooming of cutleaf evening primrose from Brookshire TX
Answered by: Barbara Medford

QUESTION:

I have cutleaf evening primrose (grandis) that puts on such an enchanting show, opening every evening in late April, precisely at 8:00 , that guests sit in chairs to watch the spectacle. Incredibly, each bud pops open in the blink of an eye. I have never seen anything written about this lovely phenomenon . I know of no other flower that does this. Are my plants unusual? If this is a common trait, I think it should be publicized more.

ANSWER:

If you follow this link,Oenothera speciosa (Pink evening primrose) to our webpage on that plant, you will find this comment on the blooming habits:

"As the common name implies, most evening primrose species open their flowers in the evening, closing them again early each morning. The flowers of some members of the genus open in the evening so rapidly that the movement can almost be observed."

Obiously, this is also the case with your Oenothera laciniata (Cutleaf evening-primrose), so it has been publicized to a certain extent. From Wikipedia:

"Oenothera is a genus of about 145 species of herbaceous flowering plants native to the Americas. It is the type genus of the family Onagraceae. Common names include evening primrose, suncups, and sundrops."

We think that many of these plants are roadside plants; you could even call them weeds. They are very low growing and with foliage growing along the ground, that possibly the cars whizzing by simply can't see the impromptu show. You are to be congratulated for having recognized this trait, and making it accessible to others.

 

From the Image Gallery


Cutleaf evening-primrose
Oenothera laciniata

Cutleaf evening-primrose
Oenothera laciniata

Cutleaf evening-primrose
Oenothera laciniata

More Herbs/Forbs Questions

Tradescantia as a water plant
June 13, 2007 - I have a spiderwort plant, and when I found it at the nursery, it was in water by the pond plants, (I had no idea what kind of plant it was at the time) So I bought it, took it home, and repotted it w...
view the full question and answer

Removal of thistles from Columbus TX
May 20, 2014 - I am sorry if you have an answer in FAQs but I could not find it. We recently cleared property near Columbus Texas of many cedars (ash junipers). This spring we experienced a profusion of thistle -...
view the full question and answer

Re-landscaping neglected garden in Franklin CT
April 03, 2011 - I am starting from scratch in a yard that has no planting beds or, for that matter, plants at all. House was vacant for quite some time, grass was three feet tall when we moved in. I would like to p...
view the full question and answer

Opinion of 5 best native garden plants in Oklahoma from Burneyville OK
September 07, 2013 - What would you say are the 3 to 5 BEST native garden plants for south central Oklahoma?
view the full question and answer

Floristic Quality Assessment program in Texas?
January 19, 2009 - Do you have knowledge of a Floristic Quality Assessment program for Texas such as the ones used in Indiana and Illinois?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.