Hi all;

I've been following the many threads regarding over wintering trees and am
somewhat confused. Here in central PA we've had spring like weather for the
past few weeks, but next weekend I'm going to prepare for the inevitable low
temps and accumulation of white stuff.

I fully understand (thanks Nina) that photosynthesis ceases at or near
freezing, and that trees don't need light during dormancy. However, the
"mulching" process still confuses me.
I'm assuming that most people bury their trees into their gardens, then
mound some form of mulch up to the first branch, or in some cases,
completely cover the tree.
Now here's where I get confused.... What function does this mulching process
perform?

Here in Central PA, in a typical winter, the ground freezes well below the
depth of the pots, and I'm assuming, well below the potted roots. Mulch
obviously doesn't keep the roots from freezing, so what function does it
perform other than keeping the roots from drying out ??

I've brought my trees into an unheated greenhouse which receives partial
sunlight (one hour/day). Should I still cover the pots in some manner?


Mark Hill - Harrisburg PA, Zone 6

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