Chocolate Cosmos = Cosmos atrosanguineus

Bulborum Botanicum
Sat, 23 Mar 2013 23:56:20 PDT
Hi Denys

I plant them just as Dahlia


2013/3/23 J. Denys Bourque <>:
> Dear all,
> I have some Chocolate Cosmos tubers, and don't know how to plant them. I searched Internet, but didn't find anything useful; and would appreciate any advice on this:
>         1. There is one clump about 4-5 in. in length, of five "pieces" (tubers??) sort of welded together at one end, with fine white rootlets almost all the way to the tips at the other end. I was thinking to plant the "welded" part down and the "pointed tips" upwards, with about 1 in. of the tips above the soil. But then, considering the presence of rootlets near the tips I figure maybe I should plant the entire bunch sideways.
>         2. There are also two pieces not connected to the other bunch, also with long "tails" or tips, and also with white rootlets, but apparently broken off at the other end. These I thought of planting sideways.
>         3. How deep should I plant them?
> Grateful for any advice.
> Sincerely,
> J. Denys Bourque
> Saint-Jacques, NB   CANADA
> Canda Zone 3A ; USA Zone 3
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