I've found references that suggest that Rosemary can tolerate
some frost, but how much is "some"? I have 2 plants in pots
on my porch that I've been bringing inside when there is a
chance of frost. So far we haven't had any frost, but it would
be nice to know when I have to bring them in and when I can
leave them outside.
Brian, in Cedar
Rosemary is generally listed as hardy in zones 8 through 10, which
means winter temperatures down to 30F. In my experience, they tend to
be hardier than that, and do fine here in 7b where it occasionally
drops into the teens. There are also cultivars available that are
hardy in zone 6.
I believe that plants in pots do not tolerate as low a temperature as
those in the ground, so would either bring in the pots or otherwise
protect them from temperatures of 32F or below.
I live in South Carolina, and I have rosemary plants in the
ground and in a whisky barrel planter. Frost won't touch
'em, and neither does a bit of freezing weather. We have
at least a few nights a year that get down to the teens, and
plenty in the twenties. I never worry about the rosemary. We
even have snow or sleet once, sometimes twice a winter, and
it's never hurt the rosemary.
"Maybe you'd like to ask the Wizard for a heart."
"ElissaAnn" < email@example.com>
Thanks everyone, I'll get them through this winter by
bringing them inside for anything below an expected
-2C and next winter they will live in the ground, unless the deer
have a fondness for them. Cedar is on Vancouver Island, just
south of Nanaimo and is Zone 7 or 8. Some of the hardier
palms survive here.
Brian, in Cedar
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