Species or cultivar tolerant to cold?

Dogrem

Dogrem

Carnivorous Plant Addict
Hi all,

I don't want to pollute other thread so I'll start an other topic about winter/dormancy.

Here in Manitoba it cold in winter... really cold.
And there is no way for me to heat my garage because $$$

This morning, the temperature was -32°C... And in my garage it was still -10°C

So I'd like to know what species or cultivar is the more tolerant to cold.
which ones do you grow outdoors successfully?

I guess S. Purpurea would be just fine in -10°C as you have this in Ontario.
But was other Sarracenia would survive to 4 to 5 month between +5°C to 10°C ?

On growcarnivorousplants.com they say:
If you live in zones 6 or colder, areas where the temperature routinely drops below freezing for more than a week at a time, you will need to mulch your container plants for the winter. Maintain soil moisture whenever the temperature rises above freezing. Uncover your plants in early spring.
Click to expand...

And what about Dionaea?
On carnivorousplants.org they say:
In very cold climates (USDA zone 6 and colder) the plants will require substantial protection if grown outside. It may be best to put the plants in a heated greenhouse, a south facing window of a garage, or cover them with a foot of straw or pine needles during the winter.
Click to expand...

So a big transparent box with mulch could work even without any unfreeze days for month?

Thanks for helping!
 
"But what other Sarracenia would survive for 4 to 5 months between +5°C to 10°C ?"

Is this the temperature range you meant? Any Sarr's would be ok.

Mulch is only insulation. It would only work if the outer pot temperature was above 0°C, such as if the pot was buried in the ground. Even in very cold climates, the ground temperature with thick mulch and snow stays just at 0°C.

VFT's die after a hard freeze.
 
Ok so I'll not take any VFT.

But for Sarracenia if I'm able to keep them -10°C it should be ok for 4 months?
Cool!

Thanks!
 
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A good general rule for Sarracenia is that the pure species with windows, minors, psittacina and leucophylla are a lot less tolerant of cold than the others. No idea why but that’s what I have observed.
Flava, oreophila, rubra and purpurea seem to do OK with mulch in cold temperatures, but they seldom get below freezing for long periods over here although I have had them at minus 15C. For a day or so. I also had VFTs, binata, temperate sundews and pinguicula grandiflora out in the bogs at that temperature and they all made it through.
If you really mean between + 5C and 10C all the above will all be OK without protection.
Cheers
Steve

Ahh sorry misread he minus 10 as plus 10 , Lloyd as below, is of course perfectly correct.

Cheers
Steve
 
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If you mean:
"But what other Sarracenia would survive to 4 to 5 month between +5°C to -10°C ?"
The answer would be purp. or possibly hardy purp. hybrids. Otherwise every time the soil freezes solid (below freezing for over a number of hours), there will be cumulative rhizome damage. I keep my garage at a minimum of 33°F for dormancy. Otherwise after dormancy the rhizomes show a variable amount of rot with dieback. If you can't keep the soil from repeated hard freezes or even one really hard freeze, keep valued plants in fridge formancy.
 
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Ok my bad @Lloyd Gordon , yes I mean between +5°C and -10°C.

So next winter I'll test garage dormancy on my Flava and Purpurea "and see".
And if it die, I'll focus on indoor CP then.

Thanks a lot.
 
Don't be discouraged, you can always grow VFT and less cold hardy temperate plants indoors using the fridge method for dormancy. Plus, they actually grow pretty well under LEDs... :)
 
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