Perrenials in planters
We have an above ground planter 10'lx4'wx4'h that we have relocated to a partial sunshine area. What would be the best flowers to plant? We have been told that perenials do not do well in winter in a planter. Would 12' of mulch on top and wrapping the planter in black plastic for the winter help?
Aitkin County Minnesota
If these same perennials were planted in the ground, the roots would have the benefit of the soil to help insulate and protect the roots from potential cold injury that can kill roots leading to a good number of the plants not coming back in the spring. Above ground, that protective root insulation disappears making the roots vulnerable to extreme winter temperatures.
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