Potential green roof plants

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Tingley
Title: Member
Joined: 2013-01-07

Speaking of Green Roofs, this article appeared in the Vancouver Sun Blog reviewing the huge green roof installed on the expanded convention centre, prior to the 2010 Winter Olympics.

Here is the link to the blog post: http://blogs.vancouversun.com/2011/11/24/grading-vancouvers-giant-green-...

Plant materials are listed, and some of the photography really brings home the size of this new downtown meadow they created.

Southwest Nova Scotia, zone 6b or thereabouts

cohan
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Title: Guest
Joined: 2011-02-03

Interesting project! I agree more public viewing areas would be nice, and sprucing up the public area mentioned, but I think there are a couple of somewhat conflicting views here-i.e. the writer vs the landscape architects. On one side, the planners/planters seem to be most interested in representing, preserving, expanding habitat for native species of plants, birds and insects. The writer acknowledges that this aim seems to be quite well achieved, but in looking at the planting as a 'garden' rather than a habitat restoration seems to find it falls short on criteria of aesthetics and public access (public access at some point of course comes into conflict with the needs of habitat maintenance)..So, two somewhat different ideas about what might constitute success. I think it's probably important for any public project to find a balance between them, in order to meet environmental protection objectives and still keep the public interested and on board!

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

ClifflineGardens
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Title: Guest
Joined: 2013-01-14

I'd like to share an image of one of current favorite green roofs. I really like this design. from GreenRoofTechnology.com. Simple, effective.

ClifflineGardens dot com

Fort Collins, CO zone 5b

cohan
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Title: Guest
Joined: 2011-02-03

Looks like the occupants of those 3 chairs would have a great view in front of them, close and longer range...

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

Hoy
Hoy's picture
Title: Member
Joined: 2009-12-15
GreenRoofer wrote:

I'd like to share an image of one of current favorite green roofs. I really like this design. from GreenRoofTechnology.com. Simple, effective.

A nice one! Almost like a meadow ;D

Trond Rogaland, Norway - with cool, often rainy summers  (29C max) and mild, often rainy winters (180 cm/year)!

ClifflineGardens
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Title: Guest
Joined: 2013-01-14

Glad you like the images, it's a cool company. Here's an image of my trial roof, found it the other day and thought it would be nice to share. It's a prairie restoration on a rooftop. 90% native. The grasses are filling in well.

Native Illinois prairie plants on this roof that would work well in a rock garden in my opinion:Heuchera richardsonii (Saxifragaceae)Opuntia humilis (scars on my hands from weeding around them, but still lovely)Talinum calycinumAntennaria neglecta/dioica (literature cites allelopathy, haven't seen evidence of it myself though)Silene regia (Tall at 4' but very narrow, doesn't get as tall on the roof, maybe 1.5')Callirhoe involucrata (stunning pink flower, nice foliage, procumbent habit)Anemone cylindrica (seedheads really look like thimbles)Dalea purpurea (Stunning purple flower, interesting foliage, and seed head that's fun to pull apart, N fixer)

Of any of these though, I think everyone should grow Talinum calycinum, they could not be happier, more well behaved, generous little plants. Often called an annual, I have found mine to be consistently perennial in zone 5. Their bright pink flower opens for a short while in the early evening in the direction of the sun. Loved by bees, the flowers dance on their thin stems in the slightest breeze. Everyone should throw a packet of this into their rock garden. They spread, but never to the point of nuisance. They spread like Aquilegia or Corydalis. Easy to prop from cuttings, but even easier from seed. I intend to make this species extremely available to the next seed exchange. 

ClifflineGardens dot com

Fort Collins, CO zone 5b

cohan
cohan's picture
Title: Guest
Joined: 2011-02-03

Nice set of plants there- Talinums are favourites of mine, but only theoretically so far- I don't have any yet, but love any hardy succulents  ;DSo how long post planting is this roof?

west central alberta, canada; just under 1000m; record temps:min -45C/-49F;max 34C/93F; http://picasaweb.google.ca/cactuscactus  http://urbanehillbillycanada.blogspot.com/

ClifflineGardens
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Title: Guest
Joined: 2013-01-14

Awesome green roof - 5 inches of media. That inch beyond an extensive roof of 4 inches really opens up your plant palette. Irrigated.

http://www.roofmeadow.com/wp-content/uploads/Pacific_Plaza_2011_05-7.pdf

What is that pink flower? It's gorgeous.

ClifflineGardens dot com

Fort Collins, CO zone 5b

ClifflineGardens
ClifflineGardens's picture
Title: Guest
Joined: 2013-01-14
cohan wrote:

Nice set of plants there- Talinums are favourites of mine, but only theoretically so far- I don't have any yet, but love any hardy succulents  ;DSo how long post planting is this roof?

It's hard to say, I started work on that system in May of 2011, planted some that first summer, planted more this summer from nursery stock and my own grown trays, then added more seed this winter.

ClifflineGardens dot com

Fort Collins, CO zone 5b

RickR
Title: Moderator
Joined: 2009-09-21

Looks like it is coming along quite nicely!

GreenRoofer wrote:

Dalea purpurea (Stunning purple flower, interesting foliage, and seed head that's fun to pull apart, ...

Gee, I find nearly any seedhead fun to pull apart.  ;DDalea purpurea in the wild (Minnesota).   

GreenRoofer wrote:

Of any of these though, I think everyone should grow Talinum calycinum, they could not be happier, more well behaved, generous little plants....

I don't think you'll find any disagreement there.  Phemeranthus(Talinum) calycinus, or just about any Phemeratnus or Talinum, would/are welcome volunteers in my pots, too.    

Rick Rodich    zone 4a.    Annual precipitation ~24 inches near Minneapolis, Minnesota, USA

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