Getting it to bloom

Why won't my Korean Fir bloom? (and how to make it flower)

Also called Korean Fir (Abies koreana).

More about korean fir

About Korean Fir

Abies koreana · also called Korean Fir · flowering

Korean Fir is a compact, slow-growing conifer prized for producing striking violet-purple cones even on very young and small specimens — a rare trait among firs. Its dark green needles with bright white undersides add year-round interest. Well-suited to smaller UK and temperate gardens, it thrives in cool, moist climates and is an RHS Award of Garden Merit holder.

Plant type: flowering

Watch for — Adelgid woolly aphid: Woolly white deposits at needle bases and on young shoots indicate adelgid infestation; apply horticultural oil in late winter before bud break or use a systemic insecticide as labelled for conifers.

The reasons korean fir isn't blooming

Almost every non-blooming korean fir 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 korean fir 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 korean fir to flower

Maximise sun. Give korean fir 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 korean fir and get the feeding right with the korean fir 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

Korean Fir 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 korean fir care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Korean Fir blooming — frequently asked questions

Why won't my korean fir flower?

Korean Fir 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 korean fir bloom?

Give korean fir 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 korean fir normally bloom?