Getting it to bloom

Why won't my Stachyurus praecox bloom? (and how to make it flower)

Also called early stachyurus, spiketail (Stachyurus praecox).

More about stachyurus praecox

About Stachyurus praecox

Stachyurus praecox · also called early stachyurus, spiketail · flowering

Stachyurus praecox is a deciduous, spreading shrub grown for its earliest-of-the-season display: pendulous, stiff catkin-like racemes of pale primrose-yellow bells that hang from bare, red-brown stems in late winter before the leaves. Glossy tapered foliage follows and colours in autumn. It thrives in moist, humus-rich, lime-free soil in a sheltered woodland-edge position.

Plant type: flowering

Watch for — Frost damage to early flowers: Blooms open in late winter and can be browned by hard frosts; site in a sheltered spot away from early-morning sun to protect the display.

The reasons stachyurus praecox isn't blooming

Almost every non-blooming stachyurus praecox 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 stachyurus praecox 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 stachyurus praecox to flower

Maximise sun. Give stachyurus praecox 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 stachyurus praecox and get the feeding right with the stachyurus praecox 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

Stachyurus praecox 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 stachyurus praecox care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Stachyurus praecox blooming — frequently asked questions

Why won't my stachyurus praecox flower?

Stachyurus praecox 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 stachyurus praecox bloom?

Give stachyurus praecox 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 stachyurus praecox normally bloom?