Getting it to bloom

Why won't my Shining Sinningia bloom? (and how to make it flower)

Also called Shining Sinningia (Sinningia micans).

More about shining sinningia

About Shining Sinningia

Sinningia micans · also called Shining Sinningia · flowering

Sinningia micans is a striking tuberous gesneriad from São Paulo state, Brazil, notable for its candelabra-like clusters of vivid red tubular flowers that emerge from a whorl of four leaves. The dark red, pebbly calyx completely encloses the corolla in bud, making the plant distinctive even before the flowers open. It can be challenging to bring into bloom — restricting new growth shoots to one or two tips when they sprout helps concentrate the tuber's energy towards flowering. The ASPCA lists the Sinningia genus as non-toxic to cats and dogs; this species is not individually verified.

Plant type: flowering

Watch for — Failure to flower despite healthy tuber: Allowing too many growth points to develop causes the tuber to put energy into foliage rather than blooms; pinch back to one or two shoots when growth begins to encourage bud set.

The reasons shining sinningia isn't blooming

Almost every non-blooming shining sinningia 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 shining sinningia 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 shining sinningia to flower

Maximise sun. Give shining sinningia 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 shining sinningia and get the feeding right with the shining sinningia 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

Shining Sinningia 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 shining sinningia care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Shining Sinningia blooming — frequently asked questions

Why won't my shining sinningia flower?

Shining Sinningia 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 shining sinningia bloom?

Give shining sinningia 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 shining sinningia normally bloom?