Getting it to bloom

Why won't my Agapanthus africanus 'Albus' bloom? (and how to make it flower)

Also called white African lily, white agapanthus (Agapanthus africanus 'Albus').

More about agapanthus africanus 'albus'

About Agapanthus africanus 'Albus'

Agapanthus africanus 'Albus' · also called white African lily, white agapanthus · flowering

Agapanthus africanus 'Albus' is the white-flowered form of the evergreen African lily, bearing rounded heads of pure white trumpet blooms on stout stems in summer above glossy, strap-shaped leaves. Being evergreen and tender, it needs frost protection in cool climates and is best grown in containers that can be moved under cover for winter.

Plant type: flowering

Watch for — Poor flowering: Caused by shade, over-potting, or too much nitrogen. Provide full sun, keep roots slightly restricted, and feed with high-potash fertiliser.

The reasons agapanthus africanus 'albus' isn't blooming

Almost every non-blooming agapanthus africanus 'albus' 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 agapanthus africanus 'albus' 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 agapanthus africanus 'albus' to flower

Maximise sun. Give agapanthus africanus 'albus' 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 agapanthus africanus 'albus' and get the feeding right with the agapanthus africanus 'albus' 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

Agapanthus africanus 'Albus' 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 agapanthus africanus 'albus' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Agapanthus africanus 'Albus' blooming — frequently asked questions

Why won't my agapanthus africanus 'albus' flower?

Agapanthus africanus 'Albus' 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 agapanthus africanus 'albus' bloom?

Give agapanthus africanus 'albus' 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 agapanthus africanus 'albus' normally bloom?