I’ve decided that the first winter as a greenhouse owner is a bit like having your first baby – you are really keen to do things right but a little scared that things might go wrong. I realise that plants are nowhere near as precious as children but over the last few days when we have had our first really hard frosts I’ve felt the concern of ‘new parenthood’.
Until November we had very few frosts and (as you will have read) I was picking tomatoes until late in the season. I did an early winter tidy of the greenhouse and wrapped the most precious plants in lovely warm horticultural fleece. Being concerned about freezing roots especially for the orange tree, three little home grown lemon seedlings and the jasmine, I lined boxes with sheets of polystyrene to stand the pots in.
No real frost arrived until the 27th when the skies cleared,the stars shone and the temperature plummeted. At that point I unearthed the large candle purchased in October. Following Dad’s advice I went outside to light the candle and place it in the greenhouse – he relies on the heat generated by the candle to keep the temperature above zero.
I woke early, about 4am, on the 28th and could see quite a glow on the hedgerow – was the greenhouse on fire? I shot out of bed and popped a coat and some wellies on and went out to inspect. It was bitterly cold outside but inside the greenhouse it felt relatively warm and the glow that I thought was fire was just the candle flame reflecting on the glass. So back to bed happy and relaxed and the candle has been lit and done its duty every night despite frosts hard enough to cause one of the water butts to split!
Today the bright crisp weather had disappeared,it was above zero by dawn and felt really quite warm outside. This afternoon I took a deep breath and unwrapped all the plants to see if jack frost had done any damage. Amazingly under the fleece wraps the geraniums and the orange tree were still in flower and so far there is no sign of frosting on any leaves. I picked chillies and sweet peppers and then carefully tucked the plants back in their fleece wraps. As the temperature is not due to drop there will be no glow of candle light from the greenhouse tonight.