Getting it to bloom

Why won't my Acer rubrum 'October Glory' bloom? (and how to make it flower)

Also called October Glory Red Maple (Acer rubrum 'October Glory').

More about acer rubrum 'october glory'

About Acer rubrum 'October Glory'

Acer rubrum 'October Glory' · also called October Glory Red Maple · flowering

'October Glory' is a popular red maple cultivar grown for reliable, brilliant crimson-red autumn foliage that colours late and holds well. A vigorous, oval-crowned shade tree, it carries small red spring flowers before the leaves. It thrives in full sun to part shade and moist, slightly acid soil, tolerating a range of conditions as a fine street or lawn tree.

Plant type: flowering

The reasons acer rubrum 'october glory' isn't blooming

Almost every non-blooming acer rubrum 'october glory' 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 acer rubrum 'october glory' 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 acer rubrum 'october glory' to flower

Maximise sun. Give acer rubrum 'october glory' 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 acer rubrum 'october glory' and get the feeding right with the acer rubrum 'october glory' 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

Acer rubrum 'October Glory' 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 acer rubrum 'october glory' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Acer rubrum 'October Glory' blooming — frequently asked questions

Why won't my acer rubrum 'october glory' flower?

Acer rubrum 'October Glory' 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 acer rubrum 'october glory' bloom?

Give acer rubrum 'october glory' 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 acer rubrum 'october glory' normally bloom?