Hazelnut

Pests & beneficial insects

🐛 Prone to: Aphids

Aphids

Aphididae

Curled leaves, sticky honeydew and ants on patrol — usually with something already eating them.

, Caterpillars

Caterpillars

Lepidoptera larvae

Holes, droppings, and a pest you can simply pick off by hand.

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Attract Hoverflies

Hoverflies

Syrphidae

The adults only drink nectar. It is the larvae that eat the aphids.

, Lacewings

Lacewings

Chrysopidae

Golden-eyed adults that mostly drink; larvae that hunt like small alligators.

, Ladybugs

Ladybugs

Coccinellidae

The one predator here where the adults hunt as hard as the larvae do.

, Parasitic wasps

Parasitic wasps

Braconidae, Ichneumonidae and relatives

Pinhead-sized, stingless, and lethal to aphids and caterpillars from the inside.

to keep them in check — plant African MarigoldGood, ChrysanthemumGood and Belgian EndiveGood nearby.

🌼 Beneficial companion — draws Predatory mites

Predatory mites

Phytoseiidae

Too small to see without a hand lens, and the main thing holding spider mites down.

that help control Spider mites

Spider mites

Tetranychidae

Fine pale stippling in hot, dusty, dry weather. Visible webbing means you are already late.

on neighbouring plants.

How to grow Hazelnut

1. Sow-12 weeks from frost
2. Germinates60 days
3. Space300 cm apart
4. GrowPartial sun
5. Harvest~1460 days

Water: Medium · Height: 500 cm · Soil: Well-draining, slightly alkaline — tolerates most soils

Growing from seed

Direct-sow Hazelnut outdoors about 12 weeks before your last frost, keeping seeds in cooler soil (around 10–18 °C). Seeds usually come up in around 60 days. Grow in partial sun, spaced about 300 cm apart. Expect to harvest in roughly 1460 days.

Keep track of the seeds you own.

Grow or find Hazelnut

• Find Hazelnut in the plant swap marketplace →
• Plan your Hazelnut growing season →