Give your plants a helping hand by keeping out the cold with our durable Propagator Lid. One of the biggest reasons for seeds failing to germinate is because of the environment being too cold or too warm. This clear plastic propagator lid will help to regulate temperature for a better success rate. Ideal for use with Wilko seed trays. Approximate size: 35 x 21cm. Wilko Clear Propagator Lid 35 x 21cm - Product Details: Home, Garden & Outdoor, Plants, Seeds & Bulbs, Seed Trays & Propagators, Wilko Clear Propagator Lid 35 x 21cm