No dormancy - was: Boophone planting
Leo Martin (Sun, 03 Apr 2016 11:21:21 PDT)
Garak wrote
Obviously it's quite easy to keep drought-triggered bulbs from dormancy,
but what about others? last July i wrote to the list about a Tigridia
Phillipiana which went dormant in a rather young state in the middle of
northern Hemisphere June - sadly, it never emerged again. So I have
some new seedlings, started them earlier to give them the whole winter
for gaining strength, but I feel i should better try keep them "awake".
Drought doesn't seem to be the trigger, as last years specimen was kept
together with T. orthantha, which grew on. so: is it worth the try to
put them to the cool basement under lights in Mai? or could they be
short day plants? I'd think if they were they'd start dormancy long
before june.
How about Ferraria crispa? my seedlings sown in fall don't seem too
strong by now, can they be kept from going dormant? what's their trigger?
I'm not familiar with that Tigridia, but many species are relatively
high-altitude, cool-growing summer plants. If they get too hot, that is the
end. At higher elevations, air temperatures where other species grow can be
in the 25-32C / 78-90 F range. Nights even in the summer may require a
heavy jacket. However, they grow in the ground, where soil is not exposed
to heat, as would be the case in a small seedling container.
If I keep watering Ferraria crispa seedlings, they remain in leaf until
temperatures get in the 32C / 90 F range. Then they go dormant. Even small
ones are surprisingly strong, and come back next fall. In your situation I
would keep watering until they begin to yellow on their own.
Leo Martin
Zone 9?
Phoenix Arizona USA