Re: Cathy & Gary->Dahlia imperialis

Donna wrote:
Hum.... Can you start them indoors to get a jump start on the season in zone
cold areas? Confused since is a tree form? Does it have tubers? Is it just a
basic type dahlia and is pruned to look like a tree? Does it go dormant in
the high zones and re-sprout/bloom?
I am definitely confused about this....
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
You can dig the tubers (very large), overwinter in the cool, bring out in early spring, take cuttings of new sprouts and grow those on, like any Dahlia.
It's a basic type Dahlia, called a tree Dahlia because it grows very tall,
10-12 feet I've seen, with a thick hollow stem, not 'pruned' in the sense
that a tree gets pruned, but as some Dahlias get pruned to thin the laterals
and so induce fewer but larger flowers. I doubt that many of the tree Dahlia
species get pruned in such a fashion. If left in the ground it will put up new growth in the spring and grow new stems. In this sense it's perennial, but any
given stem is annual.
-jrf
--
Jim Fisher
Vienna, Virginia USA
38.9 N 77.2 W
USDA Zone 7
Max. 95 F [36 C], Min. 10 F [-12 C]

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