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

Wednesday - May 29, 2013

From: Livermore, CA
Region: California
Topic: Pruning, Shrubs
Title: Pruning of tree poppy from Livermore CA
Answered by: Barbara Medford

QUESTION:

We have a Dendromecon rigida which has been in place for about 10 years and is doing fine. But the older growth gets dry, brown and crinkly, while the newer growth is bright and lush. I would like to keep it looking good, but I'm afraid of pruning off too much of the unsightly old growth for fear of overdoing it, so I have been tending to leave much of the old growth in place. Any advice about how aggressively this plant can, or should, be pruned?

ANSWER:

There are two members of the Dendromecon genus native to California. Both appear to be endemic to California; that is, growing nowhere else in North America. One is Dendromecon rigida (Tree poppy) (USDA Plant Profile), native to quite a big area of California, including Alameda County, and Dendromecon harfordii (Harford's tree poppy) (USDA Plant Profile) native to Santa Barbara County and the Channel Islands. Both are members of the Papaveraceae (poppy) family.

We mention this similarity in these plants because we found these pruning instructions for Dendromecon harfordii (Harford's tree poppy) which we think would be applicable to Dendromecon rigida (Tree poppy):

"Regarding pruning, I like tipping the plant back lightly but if it gets too big it can be treated more harshly taking half or more of the plant off around November or December. It re-sprouts generously and if those branches are immediately tipped back again it forms a more dense and floriferous plant the next year."

 

From the Image Gallery


Tree poppy
Dendromecon rigida

Tree poppy
Dendromecon rigida

Harford's tree poppy
Dendromecon harfordii

More Pruning Questions

Rose care for Austin
August 18, 2013 - I am a transplant from the Pacific NW and need to relearn rose care for Austin. When is the best time to cut back the roses, or do I even bother? I also need to find out how far back I can trimming a...
view the full question and answer

Pruning Gaura
February 19, 2015 - My Gaura lindheimeri is very "leggy", but is blooming well at the end of the spindly stems. Should I prune it back or leave it?
view the full question and answer

Trimming of Escarpment Oak from Austin
May 18, 2014 - We have a 2-year-old quercus fusiformis in our front yard and have been advised by some people that we need to remove the bottom branches and trim the ends of the branches that are hanging far down. ...
view the full question and answer

Late winter pruning of native Texas Sage
January 27, 2005 - I have several Texas Sage bushes that have started to get very woody and have growth only on the top. This seems to have led to a definite listing to one side. Should I trim these to the ground or...
view the full question and answer

Non-native pomegranate failing to fruit from Highland Village TX
October 20, 2012 - Last spring I planted a pomegranate tree (type: Wonderful) which is supposed to produce edible fruit. It had 5 or 6 absolutely beautiful blooms, but each of them dropped off and no sign of fruit. Is...
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