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Chives (Allium schoenoprasum) belong to the amaryllis family (Amaryllidaceae). Chives are related to onion, leek and garlic. Pre-sow under glass in February or outdoors in March; harvest: April-summer. Sow in April in the open ground. Chives should not be too dry. After flowering, the stem deteriorate in quality. Cutting out the flowers slows down this process. Leave a few flowers and set seed; chives self-seed themselves.
Shiny spots on leaf, on the underside are insects: thrips (Thysanoptera).
Leaf yellows, dies; plant rots away: onion fly (Delia antiqua).
Deformed, twisted and here and there swollen leaves: stem nematode (Ditylenchus dipsaci).
Plants show tunnels in the tubers and contain brown pupae: Allium leaf miner (Phytomyza gymnostoma).
Fungi & diseases
Bulb and plant rot away from top to bottom: neck rot (Botrytis allii).
Leaves turn yellow and wilt; lower bulb and roots covered with thick, white mold. There are black spots on the affected parts: white rot Sclerotium cepivorum.
A gentle decay of plant parts and growth of fluffy grey-brown fungus: Grey mould (Botrytis cinerea).
Orange-brown spores on stem: leek rust (Puccinia porri).