Growli

Pest identification

What's eating my lily magnolia?

Vine weevil (Otiorhynchus sulcatus)

Signs: Notched leaf edges; white grubs destroy roots causing wilting and dieback, worst in pots

Control: Nematode soil drench (Steinernema kraussei) in late summer; check roots at repotting

Horse chestnut scale (Pulvinaria regalis)

Signs: White cottony egg masses on bark in late spring; weakens branches if infestation is heavy

Control: Horticultural oil in late winter; scrape off visible scale from small branches by hand

Slugs and snails

Signs: Irregular holes and slime trails on young leaves at ground level, mainly on newly planted specimens

Control: Iron phosphate slug pellets around base; physical barriers; check under mulch and remove by hand at dusk

Deer

Signs: Browsed and stripped lower branches and bark rubbing by antlers in autumn and winter

Control: Tree guards on young specimens; deer repellent spray; fencing in high-pressure areas

Keep lily magnolia pest-free

Healthy plants resist pests best. Get the basics right:

Lily Magnolia pests — FAQ

What is eating my lily magnolia?

Lily Magnolia (Magnolia liliiflora) faces scale insects on stems, aphids on young growth, and vine weevil damage to roots. Slugs attack young plants near the base. Deer will browse low-hanging branches in rural gardens. Overall, magnolias are relatively pest-resistant; the main risk is vine weevil in containers.

How do I get rid of vine weevil (otiorhynchus sulcatus) on lily magnolia?

Notched leaf edges; white grubs destroy roots causing wilting and dieback, worst in pots Nematode soil drench (Steinernema kraussei) in late summer; check roots at repotting

How do I get rid of horse chestnut scale (pulvinaria regalis) on lily magnolia?

White cottony egg masses on bark in late spring; weakens branches if infestation is heavy Horticultural oil in late winter; scrape off visible scale from small branches by hand

How do I get rid of slugs and snails on lily magnolia?

Irregular holes and slime trails on young leaves at ground level, mainly on newly planted specimens Iron phosphate slug pellets around base; physical barriers; check under mulch and remove by hand at dusk

How do I get rid of deer on lily magnolia?

Browsed and stripped lower branches and bark rubbing by antlers in autumn and winter Tree guards on young specimens; deer repellent spray; fencing in high-pressure areas