"Paulo" wrote in message
. ..
I am planning to place some big pots (20" x20" approx) in my balcony with
some perennials. I am wonder, what is the best way to protect them during
winter time? I was thinking wrapping them with some cloth.... Any idea? I
am
in Toronto, and if i am not wrong it is Zone 5/6
Thanks

I too live in Toronto and had success overwintering perennials using the
following method:

1. Wait for the soil in the pot to freeze.

2. Rigid foam under the pot.

3. Pink fibreglass insulation wrapped around the outside.

4. The whole thing put in a plastic garbage bag with holes poked in the
bottom (for drainage) and the top folded around the rim of the pot.

5. Mulch in the top for insulation and to hold down the top of the bag.

Worked fine with a collection of 12 and 16 inch containers (ie. not huge).
However, they were at ground level and I was able to place the pots in
places where they would be (1) in shade, (2) protected from the wind and (3)
protected by a lot of snow cover all of which, in my view, are essential.
Can you do the same?

Jim