We have four of these F-1 crosses; these two have flowered and two are still in bud. Both parents have yellow flowers but from what I can tell neither has enough hardiness to suggest that their progeny would survive Zone 7 winters. I checked in our database and discovered that we have tried, in the open garden, plants with the same genetic mix and they did not survive. We'll see if some clever siting and a bit of pampering can bring them through a winter of two.
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