Getting it to bloom

Why won't my Yellow False Jasmine bloom? (and how to make it flower)

Also called Carolina Jessamine, Evening Trumpetflower, Woodbine (Gelsemium sempervirens).

More about yellow false jasmine

About Yellow False Jasmine

Gelsemium sempervirens · also called Carolina Jessamine, Evening Trumpetflower · flowering

Yellow False Jasmine is an evergreen twining vine native to the southeastern United States, producing masses of fragrant yellow trumpet flowers in late winter to spring. Despite its common name and appearance it is unrelated to true jasmine. Extremely toxic — all parts including nectar can be lethal to people and animals.

Plant type: flowering

Watch for — Poor flowering: Usually caused by insufficient sun or over-fertilising with nitrogen. Move to a sunnier spot and switch to a low-nitrogen, high-potassium feed.

The reasons yellow false jasmine isn't blooming

Almost every non-blooming yellow false jasmine 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 yellow false jasmine 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 yellow false jasmine to flower

Maximise sun. Give yellow false jasmine 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 yellow false jasmine and get the feeding right with the yellow false jasmine 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

Yellow False Jasmine 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 yellow false jasmine care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Yellow False Jasmine blooming — frequently asked questions

Why won't my yellow false jasmine flower?

Yellow False Jasmine 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 yellow false jasmine bloom?

Give yellow false jasmine 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 yellow false jasmine normally bloom?