Troubleshooting
Common Star of Bethlehem problems — and how to fix them
Common Star of Bethlehem (Ornithogalum umbellatum) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Invasive spreading in borders and lawns
Ornithogalum umbellatum is one of the most vigorous self-naturalising bulbs in temperate gardens; prolific offset production makes clumps very difficult to eradicate once established — mow lawns before bulbs set seed and dig out border colonies before they spread further.
Narcissus bulb fly (Merodon equestris)
Despite its name, this fly also attacks Ornithogalum bulbs; affected bulbs are hollowed out and feel soft when squeezed; destroy infested bulbs and cover emerging foliage with horticultural fleece in spring to deter egg-laying females.
Prevent common star of bethlehem problems before they start
Most common star of bethlehem issues are care-mismatch, not bad luck. Dial in the basics:
Common Star of Bethlehem problems — FAQ
Why is my common star of bethlehem invasive spreading in borders and lawns?
Ornithogalum umbellatum is one of the most vigorous self-naturalising bulbs in temperate gardens; prolific offset production makes clumps very difficult to eradicate once established — mow lawns before bulbs set seed and dig out border colonies before they spread further.
Why is my common star of bethlehem narcissus bulb fly (merodon equestris)?
Despite its name, this fly also attacks Ornithogalum bulbs; affected bulbs are hollowed out and feel soft when squeezed; destroy infested bulbs and cover emerging foliage with horticultural fleece in spring to deter egg-laying females.