Dahlia imperialis

Tony Avent tony@plantdelights.com
Sun, 23 Oct 2005 06:50:15 PDT

	Since the double purple and double white Dahlia imperialis seem to have
come from Strybing, I am curious if they have been given cultivar names
yet, or should one of us take care of that chore?

At 03:39 PM 10/22/2005 -0700, you wrote:
>Here at the botanical garden in San Francisco we have numerous clones of
Dahlia imperialis, most wild colllected from southern Mexico and Guatamala.
Some have flowers to 5 inches across. One clone blooms early (a few weeks
prior to Thanksgiving ) while most bloom closer to Christmas. They come
from white to pink to dark lavender and there are double and single forms
of most.  Some have reached to 18 feet tall.. When crossed they produce
lots of viable seed and some interesting (shorter, stockier) forms are
being developed. We also have two more everblooming species. Dahlia
tenuicaulis hails from Chiapas, Mexico and blooms May through February It
has two inch mid lavender flowers and only gets 8 to 10 feet tall. Dahlia
sp. nova has thin half inches stems and leans through other plants to 10
feet and blooms April to March with large 4 inch pink flowers that hang
downwards. It has smaller leaves. Some of the hybrids being developed seem
to be everblooming.
> Don Mahoney San Francisco Bot garden at Strybing Arboretum
>pbs mailing list
Tony Avent
Plant Delights Nursery @
Juniper Level Botanic Garden
9241 Sauls Road
Raleigh, NC  27603  USA
Minimum Winter Temps 0-5 F
Maximum Summer Temps 95-105F
USDA Hardiness Zone 7b
email tony@plantdelights.com
website  http://www.plantdel.com/
phone 919 772-4794
fax  919 772-4752
"I consider every plant hardy until I have killed it myself...at least
three times" - Avent

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