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Drosera binata winter hardy form. How hardy?

Joined
Feb 22, 2014
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1,496
Location
Oregon
Since nobody else has chimed in with firsthand knowledge, I'll add what I know...All D. binata forms (except possibly multifida) are supposed to be able to survive hard freezes. The temperate forms will form hibernaculae, while the tropical forms will die back to the roots when exposed to freezing temperatures. I've read they can survive down to 15F, but I'd be a bit wary about testing that, especially in a smaller pot.
 
Joined
Apr 19, 2012
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Location
Greeley, CO, USA
There are forms from New Zealand that almost certainly experience temperatures below 0, but as a general rule most should be treated somewhere between subtropical and mild temperate.
 
Joined
Oct 15, 2010
Messages
159
Location
Birmingham UK
I have no knowledge of the winter hardy form from ISCPS, however all the binata forms I have, get frozen every year in our UK winters in outside bogs. They generally come back from the roots fairly readily, as do the Capensis, but obviously mature later in the year. They have had temperatures down to -15C for short periods.
I have no absolute knowledge of a temperature that they can survive, as your question suggests there are different clones out there that have varying degrees of tolerance.

Cheers
Steve
 
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