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 Propagation Questions

Problems with a Hackberry tree in San Antonio.
September 23, 2010 - Our old hackberry tree fell over last year. Now we have dozens of new ones popping up in the same area. We want to transplant a few to another area of the yard, but they aren't surviving. It appears ...
view the full question and answer

Planting and growing bluebonnets
October 06, 2007 - I am looking for bluebonnet seed planting suggestions. when? How? I found a source for seed. I want to plant about 2500 sq foot area.
view the full question and answer

Pink lady slipper orchids in Maine
May 24, 2009 - Hi, I have moved to Maine from Virginia--it's a new world of plants!!Exciting!! I have found 2 pink lady slippers on our property. What can I do to encourage them to multiply? I know some wild flowe...
view the full question and answer

Trimming iris leaves in Pickerington OH
June 08, 2010 - I recently trimmed the stems and leaves of my iris plants in late May - I realize now this was a bit early. The leaves are still about 3-4" out of the ground. I would like to half them and move som...
view the full question and answer

Propagation of Kalmia latifolia
November 19, 2007 - How easy is it to propagate Kalmia latifolia from seed?
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