The soil warming cables in the onion beds were not switched on this year until about ten days ago and the soil temperature underneath the black and white polythene is now above 55�F so the onions can be planted safely this coming week.
Home - Onions – Soil Warming Cables and Polytunnels
Medwyn Williams
Hello. I'm Medwyn Williams – eleven times Gold medal winner at the Chelsea Flower Show, Past Chairman of the Royal Horticultural Society Fruit Vegetable and Herb Committee and President of the National Vegetable Society.