>John Bryan wrote > >It would be interesting to know the temperature in the pots after a cold >night, any way you can find out just how cold the soil mix was in the >pots? Cheers, John E. Bryan I can't add much more than I wrote before, as I don't put probes into pots, I merely record highs/lows over 24 hour periods. Over the last week or so I have recorded minus three on two nights and minus four on one - external temperatures were down to minus seven for five or six hours on one night, with winds of 10-15 mph (I live on a hill and the greenhouse is reasonably exposed. The greenhouse itself is a 10m long structure, with metre high benching. As I said before, most of the bulbs I grow in it are in one litre pots, which sit on the plunge. Composts are soil based, with added grit. There are a mixture of summer, winter and evergreen bulbs, nearly all in it are from South Africa and South America. Many of them do sit in areas that have a second covering of horticultural fleece, but many are in the open on metal staging. I do not water at all during cold periods, but try to give them a good soaking as soon as a mild period arises. Its starting to warm up again tomorrow, so it will be watering day. Hope that helps. Best regards, David Victor