Heated planters?
Most plants grow a LOT better when soil temperature
is above 60 F. 2 gallon heated planters -- does anyone
make them? I'm tempted to roll up a seedling mat and
place it into the pot before pouring in soil, but I'm not sure
that wouldn't be a fire hazard -- maker Hydrofarm says
not to place insulating materials on top of the mat.
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