Getting it to bloom

Why won't my Many-spiked Ixia bloom? (and how to make it flower)

Also called Many-spiked Ixia, Corn Lily (Ixia polystachya).

More about many-spiked ixia

About Many-spiked Ixia

Ixia polystachya · also called Many-spiked Ixia, Corn Lily · flowering

Many-spiked Ixia is a delicate South African corm producing multiple wiry stems bearing spikes of star-shaped white to pale lavender flowers with a dark eye in late spring. It is among the most prolific-spiking ixias, ideal for cut flowers and sunny, well-drained borders. Toxic to dogs and cats; contains irritant compounds.

Plant type: flowering

Watch for — Failure to open flowers: Flowers are heliotropic and only open fully in bright direct sunlight. Plant in the sunniest, most sheltered spot available.

The reasons many-spiked ixia isn't blooming

Almost every non-blooming many-spiked ixia 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 many-spiked ixia 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 many-spiked ixia to flower

Maximise sun. Give many-spiked ixia 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 many-spiked ixia and get the feeding right with the many-spiked ixia 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

Many-spiked Ixia 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 many-spiked ixia care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Many-spiked Ixia blooming — frequently asked questions

Why won't my many-spiked ixia flower?

Many-spiked Ixia 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 many-spiked ixia bloom?

Give many-spiked ixia 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 many-spiked ixia normally bloom?