Haemanthus growth trigger
Peter Taggart (Fri, 14 Aug 2015 11:37:12 PDT)
I agree with Jim, and caution against being quick to water Summer dormant
bulbs, in pots, too early. Watering early, if it is done, should be no more
than a light damping down. The species of Haemanthus which I have grown do
not need a drenching to tell them when to grow.
Wait for fluctuating Autumn temperatures.
Peter (UK)
On 14 August 2015 at 16:54, James SHIELDS <jshields46074@gmail.com> wrote:
Hi Stephen,
In my experience, the winter-growing sorts are triggered by temperatures
(chilly nights) and probably also the calendar. An occasional flood in the
greenhouse does not usually start them growing in mid-summer. Cool nights
in June do not start the bulbs to flowering.
Jim
On Thu, Aug 13, 2015 at 7:50 PM, Stephen Putman <putman@pobox.upenn.edu>
wrote:
What is the trigger for new growth in these winter growing species in
autumn? Is it temperature? This would mean to wait for an appropriate
temperature and then water. If the trigger is water, then the issue
would
be at what temperatures would a moist medium be beneficial, and when
fatal?