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Garlic

Garlic belongs to the onion family and is best planted late in the fall.

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recognize garlic
Garlic, photo: Christian Ries - CC BY-SA 3.0

Garlic (Allium sativum) belongs to the onion family (Allium) and is best planted late in the fall. Garlic is hardy, hibernate well in soil that is not too wet, and after winter picks up growth again in spring. Once the foliage withers (about June), the little bulbs can be harvested. Dry well and store in a cool, dry place. The tubers are susceptible to fungus.

Bugs

Yellow streaks on leaf: thrips (Thysanoptera).

Plants show tunnels in garlic bulbs and contain brown pupae: Allium Leaf Miner (Phytomyza gymnostoma).

Deformed, twisted and here and there swollen leaves: stem nematode or onion bloat (Ditylenchus dipsacl).

Fungi & diseases

recognizing fungal infection
Neck rot on onion, photo Lester E. Dickens – CC BY 3.0

Bulb and/or plant rots away from top to bottom: neck rot (Botrytis allii).

recognizing rust on garlic
Orange-brown spores on garlic, photo: facebook with permission

Orange-brown spores on stem: leek rust (Puccinia porri).

Leaves turn yellow and wilt; lower bulb and roots covered with thick, white mold. There are black spots on the affected parts: onion white rot (Sclerotium cepivorum).

Other

Due to frost, the garlic cloves planted in the autumn sometimes rise above the ground. Dig them in again. Do not do so if it is freezing or if the ground is too wet. Garlic hates too wet soils anyway.

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