Getting it to bloom
Why won't my Chinese Premna bloom? (and how to make it flower)
Also called Chinese Premna, Smallleaf Premna (Premna microphylla).
More about chinese premna
About Chinese Premna
Premna microphylla · also called Chinese Premna, Smallleaf Premna · flowering
Chinese premna is a subtropical broadleaf shrub used in bonsai for its tiny glossy leaves, rugged bark and fine ramification. It grows fast in warmth, backbuds freely and reduces well, but it is frost-tender and needs protection or indoor growing in cool climates. Bright light, steady moisture and warmth keep it dense and vigorous.
Plant type: flowering
The reasons chinese premna isn't blooming
Almost every non-blooming chinese premna 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 chinese premna 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 chinese premna to flower
- Maximise sun. Give chinese premna 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 chinese premna and get the feeding right with the chinese premna 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
Chinese Premna 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 chinese premna care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Chinese Premna blooming — frequently asked questions
Why won't my chinese premna flower?
Chinese Premna 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 chinese premna bloom?
Give chinese premna 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 chinese premna normally bloom?
Chinese Premna 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 chinese premna 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 chinese premna flowering?
Feeding chinese premna a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Chinese Premna care — the full brief (light, water, humidity, problems, pet safety)
- Chinese Premna light needs — usually the first thing to fix for flowers
- Chinese Premna 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 2023 bloom guides in the Growli library