Getting it to bloom
Why won't my Caucasian Lily bloom? (and how to make it flower)
Also called Caucasian Lily, Szovits Lily, Yellow Caucasian Lily (Lilium monadelphum).
More about caucasian lily
About Caucasian Lily
Lilium monadelphum · also called Caucasian Lily, Szovits Lily · flowering
Lilium monadelphum is a stately, tall true lily from the subalpine meadows and forest margins of the Caucasus and north-eastern Turkey, producing large, fragrant, pendant bells of pale yellow to golden yellow with a delicate speckled interior and reflexed petal tips in early to midsummer. It is notably more tolerant of shade, chalk, and clay than most lilies, making it one of the most garden-worthy and adaptable species for UK conditions. Severely toxic to cats — all Lilium species cause acute renal failure in cats.
Plant type: flowering
Watch for — Lily beetle (Lilioceris lilii): Scarlet adults and their excrement-camouflaged larvae consume foliage and buds at high speed. Inspect plants from April onwards; hand-pick adults and larvae daily. Apply pyrethrum sprays in the evening if populations are high. The tall, robust stems of this species support a large leaf canopy that attracts heavy infestations.
The reasons caucasian lily isn't blooming
Almost every non-blooming caucasian lily 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 caucasian lily 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 caucasian lily to flower
- Maximise sun. Give caucasian lily 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 caucasian lily and get the feeding right with the caucasian lily 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
Caucasian Lily 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 caucasian lily care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Caucasian Lily blooming — frequently asked questions
Why won't my caucasian lily flower?
Caucasian Lily 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 caucasian lily bloom?
Give caucasian lily 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 caucasian lily normally bloom?
Caucasian Lily 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 caucasian lily 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 caucasian lily flowering?
Feeding caucasian lily a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Caucasian Lily care — the full brief (light, water, humidity, problems, pet safety)
- Caucasian Lily light needs — usually the first thing to fix for flowers
- Caucasian Lily 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