Hello! I just joined RMBS this year and I’m fairly new to bonsai. I have a few bonsai trees and quite a few pre-bonsai as well. I have both deciduous and coniferous trees. I’m trying to figure out the best plan for them for winter. I was considering burying the conifers in their pots and putting the deciduous trees in a shed. any help is greatly appreciated. Thanks -Dylan
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Dylan, I leave all my conifers outdoors. Smaller ones go in a bunker for protection as Nicholas indicated. The bunker dips into the high 20s occasionally. Larger ones are on the ground mulched in. I do put some deciduous in my garage. It is not directly heated but is well insulated and the temp rarely falls below 40 degrees. The disadvantage of this is they start leafing out in late Jan early Feb and I have to start moving them in and out. So limiting the number is a consideration. Other hardy deciduous go on the ground like the conifers or in the bunker as space permits.
A number of us do similar things for the winter season. The wind can be particularly desiccating for outdoor trees.
If you can limit wind, keep small pots from completely drying out, and prevent/limit the freeze/thaw cycle that may help.
I personally bury my largest trees in mulch up to the pot rims, in a sheltered portion of my yard that gets less temperature fluctuations, and is blocked from the wind.
Then the rest of my trees go into an unheated garage, with a small sensor to turn on a heater if the temperature there goes below ~28 degrees.