Growli

Pest identification

What's eating my allium schubertii?

Allium leaf miner (Phytomyza gymnostoma)

Signs: White dotted feeding lines and larval tunnels in foliage and stems; leaves yellow and plants weaken.

Control: Cover with fine fleece netting during spring adult flight period. Dig up and destroy infested bulbs; don't compost.

Onion thrips (Thrips tabaci)

Signs: Silvery-white flecking and streaking on strap-like leaves; tips may brown.

Control: Remove damaged foliage; apply insecticidal soap or neem oil; avoid water stress which increases susceptibility.

Slugs and snails

Signs: Ragged holes eaten into soft emerging leaves in spring, particularly after rain.

Control: Scatter iron phosphate pellets at planting time; hand-pick at night; improve drainage around bulb sites.

Keep allium schubertii pest-free

Healthy plants resist pests best. Get the basics right:

Allium schubertii pests — FAQ

What is eating my allium schubertii?

Allium schubertii's pungent foliage deters most common pests, but allium leaf miner can damage the leaves before the dramatic flower heads develop. Onion thrips occasionally mark the foliage. Slugs may attack newly emerging shoots. Once the dried seed heads form, birds sometimes pick at the papery florets.

How do I get rid of allium leaf miner (phytomyza gymnostoma) on allium schubertii?

White dotted feeding lines and larval tunnels in foliage and stems; leaves yellow and plants weaken. Cover with fine fleece netting during spring adult flight period. Dig up and destroy infested bulbs; don't compost.

How do I get rid of onion thrips (thrips tabaci) on allium schubertii?

Silvery-white flecking and streaking on strap-like leaves; tips may brown. Remove damaged foliage; apply insecticidal soap or neem oil; avoid water stress which increases susceptibility.

How do I get rid of slugs and snails on allium schubertii?

Ragged holes eaten into soft emerging leaves in spring, particularly after rain. Scatter iron phosphate pellets at planting time; hand-pick at night; improve drainage around bulb sites.