Troubleshooting
Star of Bethlehem problems — and how to fix them
Star of Bethlehem (Ornithogalum umbellatum) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Invasiveness
Self-seeds prolifically and spreads via tiny bulblets; deadhead after flowering in controlled garden situations and avoid planting near natural habitats.
Overcrowding
Dense colonies eventually stop flowering freely; lift and divide every 3-4 years after foliage dies back.
Bulb rot in wet soil
Improve drainage or grow in raised beds in heavy clay soils.
Failure to flower indoors
Requires a cold vernalisation period to initiate blooming; bulbs brought in for forcing must first receive 12-16 weeks at 2-7°C.
Squirrel damage
Bulblets are readily eaten; wire mesh protection helps in gardens with high squirrel pressure.
Prevent star of bethlehem problems before they start
Most star of bethlehem issues are care-mismatch, not bad luck. Dial in the basics:
Star of Bethlehem problems — FAQ
Why is my star of bethlehem invasiveness?
Self-seeds prolifically and spreads via tiny bulblets; deadhead after flowering in controlled garden situations and avoid planting near natural habitats.
Why is my star of bethlehem overcrowding?
Dense colonies eventually stop flowering freely; lift and divide every 3-4 years after foliage dies back.
Why is my star of bethlehem bulb rot in wet soil?
Improve drainage or grow in raised beds in heavy clay soils.
Why is my star of bethlehem failure to flower indoors?
Requires a cold vernalisation period to initiate blooming; bulbs brought in for forcing must first receive 12-16 weeks at 2-7°C.
Why is my star of bethlehem squirrel damage?
Bulblets are readily eaten; wire mesh protection helps in gardens with high squirrel pressure.