Native Plants
![](../_images/smarty_plants.gif)
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
![](../_images/mr_smarty_plants_logo_web_200w.jpg)
rate this answer
![](../_images/star_00.gif)
Monday - August 20, 2007
From: West Bloomfield, MI
Region: Midwest
Topic: Pruning, Herbs/Forbs
Title: Leggy purple coneflower
Answered by: Barbara Medford
QUESTION:
Last year I planted purple coneflowers and this year when they bloomed they were extremely tall & leggy. I'd like next year to get them to be shorter and fuller. How do I do that & is it something I should do to them this year or next year? Also, should they be cut all the way down in the fall?ANSWER:
Echinacea purpurea (eastern purple coneflower) is naturally a tall and leggy plant. The height of the plant is given at 2 feet to 5 feet, and that is almost all stems for the flowers, as the basic plant is a low-growing rosette, with smaller leaves along the stems up toward the flowers. Legginess in plants is usually caused by too much shade and, although this plant is said to be tolerant of part shade, perhaps yours are getting too much shade. Since I don't think there is any way a plant can be trained to be shorter, and since you are obviously growing the plant for its lovely wildlife-attracting flowers, it would seem your choices are to move the plants into a sunnier spot and get used to tall flowers. In answer to your question about cutting them down in the fall, if you would like to give the birds a chance at the seeds in the "cone", don't deadhead them too soon. However, just about any plant benefits from having spent flowers and stems clipped off and discarded. This will encourage them to bloom more and help to prevent disease and insects from gathering around the dead plant tissue.
More Pruning Questions
When may I remove seed heads from yuccas?
June 07, 2010 - Soft tip yuccas dominate my home's landscape. When is the best time to remove the heavy seed heads after flowering? In addition to being difficult to work around, the pods seem to attract infestatio...
view the full question and answer
Washingtonia palms need to be skirted?
August 31, 2008 - Dear Mr. Smarty Plants, I have five Washingtonia palms on my property that have never been skirted and look rather shabby. The interesting thing is that they have thrived (20-30 ft) here to begin with...
view the full question and answer
Failure to bloom of Texas Mountain Laurel
April 15, 2008 - My +/- 4 yr old Tx. Mountain Laurel, has never bloomed. It is in full sun. I sometimes (minimal) fertilize it. I've pretty much planted it and let it grow. Its been pruned back last year when som...
view the full question and answer
Do yuccas die after blooming?
October 11, 2010 - We have a blue yucca which was planted 2 years ago and is just now blooming with a tower of white flowers. Will the entire plant die after blooming as the century plants do? If so, is there a way to s...
view the full question and answer
Existing live oak taking over in Monahans TX
March 22, 2011 - I have just purchased a home with a huge Live Oak tree in the front yard. The previous owners have over the years allowed the sucker roots to grow unchecked. The tree is shading most of the lawn (di...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |