Getting it to bloom
Why won't my Common Star of Bethlehem bloom? (and how to make it flower)
Also called Common star of Bethlehem, Star of Bethlehem, Nap-at-noon, Eleven o'clock lady (Ornithogalum umbellatum).
More about common star of bethlehem
About Common Star of Bethlehem
Ornithogalum umbellatum · also called Common star of Bethlehem, Star of Bethlehem · flowering
Ornithogalum umbellatum is a low-growing spring-flowering bulb native to southern Europe and the eastern Mediterranean, widely naturalised across the UK, North America, and temperate gardens worldwide. It produces flat-topped clusters of glistening white, star-shaped flowers with a distinctive green stripe on the outer surface of each petal, opening only in sunshine — hence the folk name 'nap-at-noon'. It is an exceptionally easy and resilient garden bulb that naturalises freely in grass or borders and requires virtually no maintenance once established; however, it can become invasive in favourable conditions, so consider its siting carefully. All Ornithogalum species are toxic to cats and dogs.
Plant type: flowering
The reasons common star of bethlehem isn't blooming
Almost every non-blooming common star of bethlehem traces back to one of these, roughly in order of how common they are:
- Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
- Too much nitrogen feed, driving lush foliage at the expense of flowers (very common with general or lawn feeds).
- The plant has not been deadheaded, so it stops flowering once it sets seed.
- Irregular watering — drought or waterlogging at the budding stage makes buds abort.
- It is still too young or was checked by a transplant and is rebuilding before flowering.
Feeding common star of bethlehem a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
The fix — how to get common star of bethlehem to flower
- Maximise sun. Give common star of bethlehem the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers.
- Switch the feed. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
- Deadhead regularly. Remove spent flowers often to keep it producing more rather than stopping to set seed.
- Water consistently. Keep moisture even through budding and flowering — drought-then-flood swings make buds drop.
Light and feeding do most of the heavy lifting here. Dial in the spot with the light guide for common star of bethlehem and get the feeding right with the common star of bethlehem fertilising schedule — the wrong feed (too much nitrogen) is one of the most common silent reasons a healthy plant makes leaves instead of flowers.
Bloom season and what to expect
Common Star of Bethlehem flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.
Post-bloom care so it flowers again
Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.
For everything else this plant needs day to day, see the full common star of bethlehem care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Common Star of Bethlehem blooming — frequently asked questions
Why won't my common star of bethlehem flower?
Common Star of Bethlehem blooms on the season's growth given enough sun, warmth and the right feed — there is no cold or photoperiod trick, just good growing conditions and a bloom-leaning feed. The most common reason it is not happening: Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
How do I make common star of bethlehem bloom?
Give common star of bethlehem the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
When does common star of bethlehem normally bloom?
Common Star of Bethlehem flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.
What should I do with common star of bethlehem after it flowers?
Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.
What is the single biggest mistake stopping common star of bethlehem flowering?
Feeding common star of bethlehem a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Common Star of Bethlehem care — the full brief (light, water, humidity, problems, pet safety)
- Common Star of Bethlehem light needs — usually the first thing to fix for flowers
- Common Star of Bethlehem fertilising — the right feed for buds, not just leaves
- Should I water my plant? The simple check
- Why is my plant wilting? Wet vs dry
- Underwatered plant — signs and rehydration
- Why won't my peace lily bloom?
- Why won't my jade plant bloom?
- Why won't my tomato bloom?
- All 4114 bloom guides in the Growli library