En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Care for penstemons in South Jordan, UT

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
3 ratings

Sunday - June 21, 2009

From: South Jordan, UT
Region: Rocky Mountain
Topic: Pruning, Seasonal Tasks
Title: Care for penstemons in South Jordan, UT
Answered by: Barbara Medford

QUESTION:

I have Firecracker Penstemons and they bloomed beautifully this year. How do I trim them and when? Will they continue to bloom throughout the summer?

ANSWER:

Penstemon eatonii (firecracker penstemon) is a desert mountain plant. Turns out Salt Lake County, UT, besides being desert, ranges from elevations of 4300 to 5200 ft., so you have the perfect plant in the perfect spot. The plant ordinarily blooms from May to August, and if you don't want seeds, you should trim off the blooms as soon as they are done and before setting seeds. This may inspire the plant to put on some more blooms. When the penstemon dies back in late Fall, we recommend that you trim it down close to the ground, leaving some stubs so you know where it is and where to expect it to re-emerge in the Spring. Be sure and clean up the plant litter around your perennials to prevent the overwintering of insects or fungi in the litter. This UNPS website Firecracker penstemon has some added information. 

 

From the Image Gallery


Firecracker penstemon
Penstemon eatonii

Firecracker penstemon
Penstemon eatonii

Parry's penstemon
Penstemon parryi

Firecracker penstemon
Penstemon eatonii

More Pruning Questions

Pruning lower branches of Cordia Boissieri from San Antonio
December 08, 2013 - My Texas Wild Olive Tree is about 6 feet high now. I bought it at the 2012 plant sale. This past summer it put on new branches near the base of the tree which I would like to cut off (to encourage u...
view the full question and answer

Dead portions on oak tree in Hutchinson KS
August 22, 2011 - I have an oak tree on the property I just moved into. One tree is healthy, the other has a dead side or almost dead. It did have some new green leaves on the dead branches but not many. What should...
view the full question and answer

Ash tree dying back to lower sprouts in Kempner TX
June 19, 2010 - My 2 year old ash tree leaves dropped, appears dead, branches dying. New growth near base of tree. Do I cut upper trunk or remove entire tree? My other ash is doing well.
view the full question and answer

Sprouts at base of holly in Surprise AZ
November 15, 2010 - Friends have recently planted a holly tree in their front yard. They live in AZ and there is no grass (only rock) around their tree. It was planted as a fairly large tree (about 18 feet).My question i...
view the full question and answer

Deadheading cannas and geraniums
August 17, 2007 - I'm new to gardening. Your help would be appreciated. 1) I think I read that canna flowers can be deadheaded so they will continue to bloom throughout the summer. What part is actually taken off? ...
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