Daffodils are the backbone of the spring garden and the spring cutting garden: reliable, long-lived, deer-proof, and available in forms from the classic large yellow trumpet to white and orange split-cups, doubles and miniatures. Narcissus pseudonarcissus, the wild daffodil of Europe, is the parent of the trumpet types and naturalises in grass better than almost any of them.
Plant bulbs in autumn at three times their depth, 4 to 6 inches apart, in full sun or the light shade under deciduous trees, in soil that drains; they tolerate clay if it is not waterlogged in summer. Leave the foliage to die back on its own, about six weeks after flowering, since that is when the bulb stores next year's flower; mowing or braiding the leaves early is the usual reason a planting thins out. They multiply for years without lifting, and crowded clumps can be divided in summer once the leaves have died down.
As cut flowers they exude a sap that shortens the vase life of other stems. Condition them alone for twelve hours and they can then be mixed with anything. Cut when the bud has coloured and bent to the horizontal. Every part of the plant is poisonous, which is why deer, rabbits, voles and squirrels leave daffodils alone.
Botrytis (grey mould)
Grey fuzzy mould on petals and stems, worst in cool wet conditions.
Remove affected parts immediately. Improve air circulation. Avoid overhead watering. Apply copper fungicide if severe.
Narcissus Basal Rot
Brown rot starting at the base of the bulb, spreading upward; soft, decaying tissue and stunted or failed growth in spring. Fungal growth may appear pink or white.
Discard infected bulbs. Plant only firm, healthy bulbs in well-draining soil. Avoid hot, wet conditions during summer dormancy and rotate planting sites.
Narcissus Yellow Stripe Virus
Yellow or pale streaks running lengthwise along leaves; distorted foliage and reduced flower size or vigor over successive years.
No cure. Remove and destroy infected plants. Control aphids, which spread the virus, and buy certified virus-free bulbs.