Читать книгу Home Gardener's Propagation (UK Only) - David Squire - Страница 33

To reduce heating costs in late winter and spring, when sowing seeds, attach plastic bubble-wrap glazing to the inside of metal or wood greenhouses. Leave space for the ventilator to open and close, and use drawing pins to hold the bubble glazing in place in wooden greenhouses, or special plastic fittings for use in aluminium greenhouses.