Fritillaria Raddeana Question

Jim McKenney
Sat, 15 Sep 2012 17:52:38 PDT
A good place to start, Peter, might be to define chilling. 

Late August soil temperatures in Düsseldorf are probably chilly compared to Maryland soils at the same time. When I suggested that bulbs be refrigerated in late summer, it was with our local conditions here in Maryland in mind. 

But I agree with what you are saying about the need of some taxa  for warmth during dormancy - in fact, I've often wondered if this might explain why the Californian Fritillaria are so difficult in the UK, where so many other species appear to be very easily managed and flowered. 

Jim McKenney

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