Getting it to bloom
Why won't my Portuguese Squill bloom? (and how to make it flower)
Also called Portuguese Squill, Cuban Lily, Giant Scilla, Peruvian Lily (Scilla peruviana).
More about portuguese squill
About Portuguese Squill
Scilla peruviana · also called Portuguese Squill, Cuban Lily · flowering
Scilla peruviana — despite its misleading species name — is native to the western Mediterranean region, including Portugal, Spain, northwest Africa, and Italy, with no connection to Peru. It is the largest and most dramatic of the commonly grown squills, producing bold, conical heads of up to 100 small star-shaped blue-violet flowers on stout stems in late spring and early summer. A warm, sunny, sheltered spot with excellent drainage is essential; in the UK it is best grown in a south-facing border or in containers that can be brought under cover in harsh winters. All parts are toxic to cats, dogs, and horses.
Plant type: flowering
Watch for — Slug and snail damage: Emerging foliage in autumn and winter is vulnerable to slug and snail feeding, which weakens the plant before flowering. Use copper tape around pots or iron phosphate pellets in borders.
The reasons portuguese squill isn't blooming
Almost every non-blooming portuguese squill 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 portuguese squill 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 portuguese squill to flower
- Maximise sun. Give portuguese squill 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 portuguese squill and get the feeding right with the portuguese squill 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
Portuguese Squill 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 portuguese squill care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.
Portuguese Squill blooming — frequently asked questions
Why won't my portuguese squill flower?
Portuguese Squill 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 portuguese squill bloom?
Give portuguese squill 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 portuguese squill normally bloom?
Portuguese Squill 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 portuguese squill 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 portuguese squill flowering?
Feeding portuguese squill a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.
Keep reading
- Portuguese Squill care — the full brief (light, water, humidity, problems, pet safety)
- Portuguese Squill light needs — usually the first thing to fix for flowers
- Portuguese Squill 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