Getting it to bloom

Why won't my Common Witch Hazel 'Arnold Promise' bloom? (and how to make it flower)

Also called Witch Hazel (Hamamelis × intermedia 'Arnold Promise').

More about common witch hazel 'arnold promise'

About Common Witch Hazel 'Arnold Promise'

Hamamelis × intermedia 'Arnold Promise' · also called Witch Hazel · flowering

'Arnold Promise' is a late-winter-flowering witch hazel whose bare branches erupt with spidery, fragrant bright-yellow flowers in February and March, followed by good orange-red autumn leaf colour. A hardy deciduous shrub for acidic, moist, well-drained soil and open sun or light shade, it brings scent and colour to the dormant garden.

Plant type: flowering

Watch for — Sparse flowering or chlorosis on chalk: Shallow alkaline soils cause yellowing and weak bloom. Improve soil with organic matter and acidify, or grow in a raised bed of suitable soil.

The reasons common witch hazel 'arnold promise' isn't blooming

Almost every non-blooming common witch hazel 'arnold promise' 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 common witch hazel 'arnold promise' 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 common witch hazel 'arnold promise' to flower

Maximise sun. Give common witch hazel 'arnold promise' 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 common witch hazel 'arnold promise' and get the feeding right with the common witch hazel 'arnold promise' 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

Common Witch Hazel 'Arnold Promise' 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 common witch hazel 'arnold promise' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Common Witch Hazel 'Arnold Promise' blooming — frequently asked questions

Why won't my common witch hazel 'arnold promise' flower?

Common Witch Hazel 'Arnold Promise' 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 common witch hazel 'arnold promise' bloom?

Give common witch hazel 'arnold promise' 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 common witch hazel 'arnold promise' normally bloom?