Getting it to bloom

Why won't my Daylily 'Joan Senior' bloom? (and how to make it flower)

Also called Joan Senior daylily, white daylily, near-white evergreen daylily (Hemerocallis 'Joan Senior').

More about daylily 'joan senior'

About Daylily 'Joan Senior'

Hemerocallis 'Joan Senior' · also called Joan Senior daylily, white daylily · flowering

Hemerocallis 'Joan Senior' is one of the most popular near-white daylilies ever bred, an AHS Stout Silver Medal and Award of Merit winner with large, flat-faced creamy-white blooms and a lime-green throat. Evergreen in mild climates. Highly toxic to cats — any part ingested can cause acute, potentially fatal kidney failure.

Plant type: flowering

Watch for — Botrytis on large blooms: The broad, flat blooms collect moisture. Deadhead promptly and avoid overhead watering to reduce botrytis risk, particularly in humid summer climates.

The reasons daylily 'joan senior' isn't blooming

Almost every non-blooming daylily 'joan senior' 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 daylily 'joan senior' 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 daylily 'joan senior' to flower

Maximise sun. Give daylily 'joan senior' 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 daylily 'joan senior' and get the feeding right with the daylily 'joan senior' 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

Daylily 'Joan Senior' 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 daylily 'joan senior' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Daylily 'Joan Senior' blooming — frequently asked questions

Why won't my daylily 'joan senior' flower?

Daylily 'Joan Senior' 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 daylily 'joan senior' bloom?

Give daylily 'joan senior' 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 daylily 'joan senior' normally bloom?