En Espa—ol

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

Non-native lilacs for Salt Lake City, UT
April 15, 2012 - Is the weather in Salt Lake City UT good enough to plant a lilac bush root? If not, how long should I wait?
view the full question and answer

Propagation of Mountain Laurel by seed
March 28, 2007 - I harvested the seed or nut from our Mountain Laurel this spring and I would like to propagate them in containers for at least a year and then transfer them to the ground. I live in Hays County, TX in...
view the full question and answer

Baby mountain laurels are ready to move, in Lockhart Texas
October 19, 2011 - I want to harvest the baby mountain laurel plants which are growing under a large bush. What height would be best for the young plants survival? Please recommend a soil mixture for the pots.
view the full question and answer

Controlling agave pups from Galveston, TX
July 26, 2013 - I live in Galveston, Tx.I have several large 5ft tall century plants in my yard and the pups are coming up everywhere..how do I control these??? HELP!!
view the full question and answer

Propagation of Chandler's craglily from San Marcos TX
December 16, 2012 - Can you please advise me on collecting and propagating seed from Chandlerís craglily -Echeandia chandleri. I have 2 plants that came from the wildflower center. They never seem to multiply, but they d...
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