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Dahlia imperialis

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On Dec 22, 2005, at 10:19 PM, James R. Fisher wrote:

> 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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Island Jim
Southwest Florida
27.0 N, 82.4 W
Hardiness Zone 10
Heat Zone 10
Minimum 30 F [-1 C]
Maximum 100 F [38 C]

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