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

Wednesday - March 12, 2008

From: Queen Creek, AZ
Region: Southwest
Topic: Propagation
Title: Germination period for Snow Mountain beardtongue (Penstemon purpusii)
Answered by: Nan Hampton

QUESTION:

Why is the germination period for the Snowmountain Beardtongue so long?. I understand it to be approximately 690 days.

ANSWER:

I did find a record on The Seed Site from UK that reported "679" under the column heading "Winter-Out" for Penstemon purpusii (Snow Mountain beardtongue). According to their Germination Page: "Out = seeds sown in pots of compost and kept in uncovered trays outside in the open or on a shelf unit with covered sides."

Tom Clothier's Garden Walk and Talk web page has a Penstemon Germination Database that gives the germination time for P. purpusii as 8 weeks at 40° F. Perhaps the The Seed Site number was an entry error (maybe it was meant to be 67 or 79) or perhaps the outdoor temperature in the UK was not sufficiently consistent during the winter to germinate the seeds in the same amount of time as reported in the Penstemon Germination Database.

 

More Propagation Questions

Identifying gender of persimmon trees
October 23, 2006 - How can you tell the difference between a male persimmon tree and a female persimmon tree? Also do you need both to bear the fruit? I live in Louisiana and never heard of this before. Thanks.
view the full question and answer

Germination of seeds of Stephanomeria pauciflora (Brownplume wire lettuce)
February 20, 2015 - I have discovered a very fast growing Stephanomeria pauciflora on property where I work here in Terlingua, TX. At first glance it appears as an invasive weed but on closer inspection with my macro le...
view the full question and answer

How to grow milkweeds (Asclepias spp.) for monarch butterflies
March 31, 2010 - I tried and tried and tried to grow Asclepias viridis, A. asperula and even A. oenotheroides from seeds and even tubers for fourteen years! Do you have advice for growing these and other milkweed plan...
view the full question and answer

Plant cloning or genetic engineering
February 23, 2012 - Can you take one genome (strain) and take a clean cut and put onto another plant another strain?
view the full question and answer

Propagating a new tree from a magnolia in Johnsburg IL
September 22, 2009 - My friend would like to reroot her magnolia tree in her front yard to bring it with her to Memphis. The tree is huge and easiest to reroot if possible. Does she trim branches to root, or dry the seeds...
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