When I lived in Los Angeles, I just placed some tubers of D.
vulgaris in the ground and forgot
about them until they sprouted and bloomed.
Here in North Texas, the circumstances are a little different (eg. temperatures, humidity,
etc.). I tried growing 7 tubers in containers. Four sprouted,
two did not sprout - but still look viable, and one rotted.
The four that sprouted did so in April - May, looked terrible, and
were down within 6 -8 weeks or so. When do they ordinarily sprout in
the Northern Hemisphere? How long do the ordinarily grow before
going dormant again.
Is there a particular soil acidity/alkalinity requirement for this
I had them in partial shade (early morning only). Do they
require more shade or more sun?
I watered them with a weak plant food when I thought they needed it
(more often in warmer weather). Should they be allowed to dry out or
should the soil remain moist?
Thanks in advance for your suggestions.