The mixture that is use for both the leeks and the onions is mainly peat based but from this stage on I start to introduce soil as well. This will be soil sieved from the leek beds and stored in bags under the greenhouse staging so that it is always at the same temperature as the plants are growing in.
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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.