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
Not Yet Rated

Wednesday - July 04, 2007

From: Syracuse, NY
Region: Northeast
Topic: Non-Natives, Vines
Title: Care of Passiflora incarnata or Passiflora coccinea
Answered by: Nan Hampton and Joe Marcus

QUESTION:

Hi- I have two passionflowers, one red, one purple. I live in upstate NY. They grow very well up onto trellises, however, they have stopped producing flowers. Both are planted in pots (fairly large) and receive part shade but mostly sun. I have fed miracle grow...any suggestions on how to increase their blooms??

ANSWER:

Our focus and expertise are native plants of North America. It is possible that your purple passionflower is Passiflora incarnata (purple passionflower). Its range goes as far north as Pennsylvania, but any red flowering passionflower is going to be a non-native tropical species such as Passiflora coccinea.

Based on our knowledge of the native passionflowers, we can offer the following advice. For vines like these, too much shade and a nitrogen level that is too high are the usual culprits for lack of flowering. You should back off on the fertilizer and make sure that they're getting enough light.


Passiflora incarnata
 

More Vines Questions

Front Door Vine in Alabama
March 02, 2013 - I live in Birmingham, AL in a large-scale, white brick, French-style home. I would like to have a vine over my front door. I don't want an invasive vine (seed pods that create new vines or attaches t...
view the full question and answer

How Will Termite Fumigation Affect a Figvine
September 26, 2010 - Will a termite fumigation kill a 19 year old figvine that is growing on a stucco house?
view the full question and answer

Milkweed species for Central Texas
February 11, 2015 - What milkweed should I plant in the flood plain behind my house on Brushy Creek.
view the full question and answer

Plant to hang over and cover a wall
May 21, 2010 - HI! this is a stumper for me! I have a 6 foot wall bracing a hill on one side and a lawn on the other. It is currently cement and I would like to find something to cover it --evergreen would be the...
view the full question and answer

Salt-tolerant plants in Central Texas
September 16, 2009 - Do you have any suggestions for salt-tolerant plants in Central Texas? Thanks.
view the full question and answer

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