Getting it to bloom

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

Also called miniature gloxinia, miniature sinningia (Sinningia pusilla).

More about miniature sinningia

About Miniature Sinningia

Sinningia pusilla · also called miniature gloxinia, miniature sinningia · flowering

One of the smallest flowering houseplants, this tuberous gesneriad forms a tiny rosette only a few centimetres across yet produces relatively large lavender-and-white tubular flowers almost continuously. Sinningia pusilla thrives in the humid, stable environment of a covered terrarium or jar, where its miniature scale and near-perpetual bloom make it a collector's favourite.

Plant type: flowering

Watch for — Stopping flowering: Too little light or low humidity halts the near-constant bloom. Provide bright indirect light or a grow light and maintain a humid environment.

The reasons miniature sinningia isn't blooming

Almost every non-blooming miniature 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 miniature 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 miniature sinningia to flower

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

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

Miniature Sinningia blooming — frequently asked questions

Why won't my miniature sinningia flower?

Miniature 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 miniature sinningia bloom?

Give miniature 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 miniature sinningia normally bloom?