Getting it to bloom

Why won't my Western Bog Laurel bloom? (and how to make it flower)

Also called Western Bog Laurel, Alpine Bog Laurel, Alpine Laurel, Small-leaf Laurel (Kalmia microphylla).

More about western bog laurel

About Western Bog Laurel

Kalmia microphylla · also called Western Bog Laurel, Alpine Bog Laurel · flowering

Kalmia microphylla is a low, mat-forming evergreen shrub native to alpine and subalpine bogs and wet meadows across western North America, from California and Colorado north through British Columbia to Alaska. It produces bright deep-pink, bowl-shaped flowers in small terminal clusters in late spring to early summer and grows naturally in cold, acidic, peaty, and perpetually moist conditions. The most important care fact is that it requires consistently wet, acidic, lime-free conditions — it is not suited to dry gardens. All Kalmia species are toxic to cats, dogs, and horses.

Plant type: flowering

The reasons western bog laurel isn't blooming

Almost every non-blooming western bog laurel 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 western bog laurel 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 western bog laurel to flower

Maximise sun. Give western bog laurel 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 western bog laurel and get the feeding right with the western bog laurel 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

Western Bog Laurel 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 western bog laurel care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Western Bog Laurel blooming — frequently asked questions

Why won't my western bog laurel flower?

Western Bog Laurel 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 western bog laurel bloom?

Give western bog laurel 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 western bog laurel normally bloom?