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Seem to have found a way to get some Kelsaes to germinate – the seeds which failed earlier on are now germinating, at least at some level, as follows:
1. Water thoroughly with rainwater from the butts.
2. Cover trays with foil.
3. Place trays on newspaper on top of an external gas boiler in an enclosed area.
4. Leave for 3 days at what will probably be 23 – 27C within the soil.
From having less than 5 germinated, we are now up to about 20, which still isn’t very good but does at least give a starting point to grow a few.
Maybe the lesson is that, for Kelsae onions at least, warm and damp conditions are best to trigger germination??