Spring onion belongs to the garlic family and is also called scallions or Welsh onion.
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Spring onion (Allium fistulosum) belongs to the daffodil family(Amaryllidaceae) and is also called scallions or Welsh onion. Sow in March and April in the final spot and thin out after a month and a half. Sowing indoors or in the greenhouse can be done as early as late February, early March. After six weeks, transplant to open ground. Spring onions like fertile soil; if the soil is too poor, the leaves turn yellow. Harvest before the onion makes a flower stem.
Bugs
Shiny spots on leaf, on the underside are insects: thrips (Thysanoptera).
Leaf yellows, dies; plant rots away: onion fly (Delia antiqua).
Fungi & diseases
Bulb and/or plant rots away from top to bottom: neck rot (Botrytis allii).
Orange-brown spores on stem: leek rust (Puccinia porri).
