Just found a couple of Ipomoea "Kniola's Black" in flower. They were
last year's plants in a not particularly sheltered position, and were
nowhere near a south or west-facing wall. It seems strange that as last
winter was on the cold side (we had at least 10 nights of frost here,
with a couple falling to -6 deg C), that those ipomoeas should survive
when others in milder winters have not.

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Jeff