Getting it to bloom

Why won't my Sweet Mock Orange bloom? (and how to make it flower)

Also called Mock Orange, English Dogwood, European Mock Orange (Philadelphus coronarius).

More about sweet mock orange

About Sweet Mock Orange

Philadelphus coronarius · also called Mock Orange, English Dogwood · flowering

A vigorous deciduous shrub renowned for its intensely sweet, orange-blossom-scented white flowers in late spring to early summer. Sweet Mock Orange is very easy to grow, tolerates a range of soils and exposures, and makes an excellent informal hedge or specimen plant. Not listed by ASPCA; no confirmed toxicity in the Hydrangeaceae family for pets.

Plant type: flowering

Watch for — Powdery mildew: White powder on foliage in hot, dry summers; improve air circulation by thinning congested stems after flowering.

The reasons sweet mock orange isn't blooming

Almost every non-blooming sweet mock orange 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 sweet mock orange 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 sweet mock orange to flower

Maximise sun. Give sweet mock orange 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 sweet mock orange and get the feeding right with the sweet mock orange 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

Sweet Mock Orange 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 sweet mock orange care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Sweet Mock Orange blooming — frequently asked questions

Why won't my sweet mock orange flower?

Sweet Mock Orange 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 sweet mock orange bloom?

Give sweet mock orange 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 sweet mock orange normally bloom?