'Mount Hood' is the white trumpet you see in old gardens. The trumpet opens soft ivory and bleaches to white over a few days, so a clump reads as cream and white at the same time. Stems are 16 to 18 inches and sturdy, and the bulbs multiply steadily without fuss.
White daffodils show up better than yellow at dusk and against dark evergreens, and they mix with almost anything. Plant in drifts with blue muscari or forget-me-nots, or let it naturalise in thin grass. Treat it exactly as any other trumpet daffodil.
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.