Garden Organic sell nematodes that parasitise slugs and snails We will be trialling these

Above Camassia alba,  Narcissi pheasant's eye. Fritillary and wild daffodils
​Fritillaria meleagris is a Eurasian species of flowering plant in the lily family. Its common names include snake's head fritillary, snake's head, chess flower, frog-cup and guinea-hen flower.
Camassia leichtlinii Alba is a statuesque late-spring flowering bulb with spires of creamy-white flowers which last for ages. One of the most tolerant and long-lived bulbs you can grow
Narcissus var. pheasant’s eye
Fantastically fragrant, pure white May flowers with windswept petals and tiny, red-rimmed yellow cups. This old pheasant's eye narcissus is ideal for naturalising in grass. The small, sweetly scented blooms associate well with other native wildflowers, such as snake's head fritillaries and cowslips, which once flourished on moist pastureland.
Narcissus lobularis - the wild daffodil Also known as the Lent Lily. Nodding flowers smaller than the cultivated varieties. Moist soil in wood or meadow. Feb-April.