Haemanthus growth trigger

Kenneth Preteroti k.preteroti@verizon.net
Fri, 14 Aug 2015 10:11:43 PDT
Great question Stephen. Hopefully you will receive responses from the east coast growers that have like conditions to yours. However I believe there may not be a black or white answer. Amaryllids maintain their roots during dormancy. So I have been giving my winter growers some water through the summer in the greenhouse. They are in a very porous mix in clay pots. Same for the summer growers during their winter dormancy in the basement. I would like to know also. 

Ken P
Old Bridge, NJ
Zone 6 b

> On Aug 13, 2015, at 7:50 PM, Stephen Putman <putman@pobox.upenn.edu> wrote:
> I'm trying to learn about Haemanthus.  I've had reasonable success with the summer growing and the evergreen species, but less satisfactory results with winter growing.
> 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?
> Any other bits of knowledge about this topic would be gladly received by me, and possibly others who are not yet expert in the growing of these most interesting plants.
> Regards,
> Stephen Putman in central Delaware about a mile from the Delaware Bay, in the middle of the Cedar Swamp Wildlife Management Area.  No potted plants in bloom, but a nice show in the garden.
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