Pest identification
What's eating my sieber's crocus?
Squirrels and mice
Signs: Corms excavated and eaten; bare patches in the planting where bulbs have been removed.
Control: Plant under wire mesh or in buried wire cages; top-dress with sharp grit, which deters digging.
Birds
Signs: Flowers torn apart for nectar; petals littered on the soil.
Control: Stretch cotton thread or fine netting just above bloom height during the short flowering period.
Vine weevil grubs
Signs: Corms hollowed underground; plants wilt and collapse suddenly.
Control: Use nematodes (Steinernema kraussei) in early autumn in containers and borders; check corms at lifting.
Keep sieber's crocus pest-free
Healthy plants resist pests best. Get the basics right:
- What eats sieber's crocus — the species this cultivar belongs to
- What eats sieber's crocus — our other guide for the same plant
- What's wrong with my plant? — the diagnosis apps compared
- Common sieber's crocus problems & fixes
- Sieber's Crocus watering schedule
- Sieber's Crocus light requirements
- Full sieber's crocus care guide
Sieber's Crocus pests — FAQ
What is eating my sieber's crocus?
Sieber's Crocus (Crocus sieberi), an early-flowering Greek species, is most threatened by squirrels and mice digging up its small corms. Birds peck open the lilac-and-gold flowers. Vine weevil grubs are a risk in containers. Slugs may nibble early shoots in mild winters but rarely cause serious damage.
How do I get rid of squirrels and mice on sieber's crocus?
Corms excavated and eaten; bare patches in the planting where bulbs have been removed. Plant under wire mesh or in buried wire cages; top-dress with sharp grit, which deters digging.
How do I get rid of birds on sieber's crocus?
Flowers torn apart for nectar; petals littered on the soil. Stretch cotton thread or fine netting just above bloom height during the short flowering period.
How do I get rid of vine weevil grubs on sieber's crocus?
Corms hollowed underground; plants wilt and collapse suddenly. Use nematodes (Steinernema kraussei) in early autumn in containers and borders; check corms at lifting.