some years ago I kept one geranium in a pot over winter.
kept it alive...
no flowers but lots of leaves.
In spring I planted it in ground.
Over the winter it grew to about 18 inches high
Well, it sooon lost most of its leaves, but lots of new shoots came up.
By mid summer it wa 3 feet high and at one time had about 50 flowers on it.
I got old photograhs, but they are very faded so not on WEB.
So yes, it can be done.

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Will Renkel
Wheaton, Ill.
REGISTERD Linux User: 300583

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