En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Kinnikinnick for a green roof

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 - July 04, 2012

From: lynnwood, WA
Region: Northwest
Topic: Planting, Propagation, Green Roofs, Groundcovers, Herbs/Forbs
Title: Kinnikinnick for a green roof
Answered by: Guy Thompson

QUESTION:

Hi Mr. Smarty Plants, I live just north of Seattle and want to build a green roof (outdoor kitchen) I'm concerned about the weight of the soil (saturated), drainage etc. am building from scratch and am a building official so can calc the loads. - tons! so (don't try this at home kids) - I don't like the weedy look of sedums so was thinking about Arctostaphylos uva-ursi (L.) Spreng. Kinnikinnick and need to know what depth of soil, if it might really grow on the warm windy roof - (it does rain here) - and maybe this plant could work.. thoughts?

ANSWER:

Arctostaphylos uva-ursi (Kinnikinnick) is an obvious prospect for a green roof.  Attractive, tolerates water-logging and drought, and found throughout the Pacific Northwest.  The problem is that it grows slowly and is not easily transplanted.  If you are planning to grow it for yourself it would seem best to start with cuttings or seed.  This web site gives information on propagation from seed, stem cuttings and root cuttings.  The Woodland Park Zoo tested Kinnikinnick on a green roof in 2006.  They found that it survived but only on slopes of less than 15%.  At greater slopes their growth medium (6 inches in depth) did not retain water well enough to prevent root drying.  Some details are given in a Masters degree thesis.  The Kinnikinnick plants were young and perhaps had not established an extensive root system.  I advise you to call ( (206) 548-2520) or drive to the zoo and find out more recent information.  Kinnikinnick has also been used on the Vancouver, BC, library roof.

Because of the widespread interest in green roofs improved planting media are always appearing. I found numerous potentially useful web sites in a Google search for "Green roof growth media, Pacific Northwest.  Kinnikinnick plants are available in Seattle area nurseries, e.g.,  the Woodbrook Native Plant Nursery and probably at some of the ones on this list.

 

 

From the Image Gallery


Kinnikinnick
Arctostaphylos uva-ursi

More Planting Questions

Planting Texas Persimmon in enclosed planter from San Angelo TX
May 23, 2013 - I want to plant a Texas Persimmon (in West Texas) in an enclosed planter 4' X 4' X 2.5' deep. What would be a good planting medium. Does it need to be deeper?
view the full question and answer

Need a shade tree to plant in Houston, TX
November 18, 2013 - Hi, i'm looking for a shade tree to plant on the southwest side of our house, both to make our backyard more enjoyable and to improve energy efficiency. We really like Live Oaks, but they just take t...
view the full question and answer

Transplanting a redbud in Virginia Beach VA
April 21, 2010 - I have a 5-6 ft. Redbud Tree and like to dig up and move to different spot in my backyard. How/what is the proper way to do it without killing the tree?
view the full question and answer

Possibility of contaminants leaching from asphalt driveway to adjacent vegetable garden in Tucson
April 13, 2011 - We have planted a vegetable garden next to a driveway. The driveway has recently (within the last 2 years) been covered with asphalt. My concern is that the oil may leach into my vegetables. Is thi...
view the full question and answer

Need a shade tree for front yard in Fredricksburg, TX.
July 16, 2012 - I live in Fredericksburg, Tx. I have a large front yard, but only one huge pecan tree in the front yard that is probably 18 years old. It shades half the yard. I want to plant another shade tree for t...
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