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 - June 11, 2013

From: Pleasanton, TX
Region: Southwest
Topic: Propagation, Seeds and Seeding
Title: Germinating Hibiscus martianus, Heartleaf hibiscus
Answered by: Nan Hampton and Sean Watson

QUESTION:

Is there some secret to getting Heart Leaf Hibiscus to germinate from seed? I have tried several times, but have had no luck getting them to germinate.

ANSWER:

There is certainly agreement that Hibiscus martianus (Heartleaf rosemallow) is difficult to germinate.  Here's an informative article from Dave's Garden that discusses difficulties in getting seeds of the heartleaf hibiscus to germinate.  One observation in the article is that very fresh seeds germinate best.  Here are more comments from B and T World Seeds about germinating H. martianus (under its former name/synonym, H. cardiophyllus) and more information from All Things Plants.

I asked the Wildflower Center's Nursery Manager, Sean Watson, how he germinated the heartleaf rosemallow seeds and this is his reply:

"I soak the seed for 48 hours in water. I usually boil water, let it cool for a minute, and then pour over the seed and let it soak for the 48 hrs.  I still get spotty germination. I collect lots of seed and go with numbers."

If I were you and it's at all possible, I would follow Sean's instructions and also "go with numbers!"

 

From the Image Gallery


Heartleaf rosemallow
Hibiscus martianus

More Seeds and Seeding Questions

Golden groundsel plants or seeds for Bulverde TX
October 02, 2011 - Where can I find golden groundsel, plants or seeds?
view the full question and answer

Milkweed Seedlings Source for Austin, Texas
March 18, 2013 - Where can I find seedlings or four inch pots of common milkweed? I have a backyard garden that is mostly filtered sunlight and space for them.
view the full question and answer

More on bluebonnets
May 09, 2003 - When can I harvest my Bluebonnets?
view the full question and answer

Wildflower garden with Castilleja indivisa (Indian paintbrush)
January 08, 2013 - I want to start a wildflower garden in my front/backyard. Specifically, I would like to include the indian paintbrush. What is the best way to go about this? Straight in the ground, containers, etc...
view the full question and answer

Standing Cypress Plants in San Antonio, TX
June 26, 2013 - I purchased seeds for standing cypress 2 years ago and this spring they look beautiful. What is the best way to harvest the seeds? Also, will the current plants come back next spring or will I have to...
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
© 2014 Lady Bird Johnson Wildflower Center