Repotting guide

When & how to repot white trumpet sinningia (Sinningia conspicua)

Also called white trumpet sinningia.

More about white trumpet sinningia

About white trumpet sinningia

Sinningia conspicua · also called white trumpet sinningia · houseplant

Sinningia conspicua is a Brazilian tuberous gesneriad that produces upright stems clad in soft, velvety leaves and large, pure white trumpet flowers with a delicate fragrance. It undergoes a seasonal dormancy after blooming. Best suited to bright indirect light and warm indoor conditions, making it a showstopper for gesneriad collectors.

Mature size: 30–45 cm tall in bloom; 25–35 cm spread

Watch for — Bud blast: Buds drop before opening if humidity falls suddenly, if the plant is moved during bud formation, or if roots are disturbed. Keep conditions stable once buds appear.

How to tell white trumpet sinningia needs repotting

Repotting on a calendar is less reliable than reading the plant. For white trumpet sinningia, watch for these signs:

Flowering has tailed off year on year and the clump has become congested and overcrowded.
Lots of leaf and few flowers — a classic sign that white trumpet sinningia bulbs or tubers need lifting and dividing.
Bulbs visibly bursting the pot or pushing each other to the surface.
It is the natural dormancy window (foliage yellowed and died back) — the only safe time to lift and split.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot white trumpet sinningia

Lift and divide every 3–4 years once clumps congest. Rather than a true repot, white trumpet sinningia is lifted and divided once the clump congests and flowering drops off. Upright, tuberous-rooted perennial with a seasonal dormancy cycle.

What size pot to step white trumpet sinningia up to

Pot size matters less than depth and spacing here. When you replant white trumpet sinningia, set the bulbs or tubers at the correct depth (a rough guide: two to three times their own height of soil over the top) and space them so they are not touching. A wide, shallow pot suits a clump better than a tall narrow one.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot white trumpet sinningia

The only safe window is dormancy: wait until the foliage has yellowed and died back naturally, lift and divide then, and replant before or at the start of the next growing season. Disturbing white trumpet sinningia in full growth or flower sets it back badly.

Step-by-step: repotting white trumpet sinningia

Wait for dormancy. Let white trumpet sinningia foliage yellow and die back completely. Lifting while it is in growth wastes the energy it is storing for next year.
Lift carefully. Loosen the soil well away from the bulbs/tubers with a fork and ease the whole clump out without spearing them.
Separate the offsets. Gently pull the clump apart into individual bulbs or tubers. Keep only firm, healthy, blemish-free ones.
Replant at the right depth. Reset them in fresh airy, peat-free gesneriad mix at the correct depth and spacing — not touching — so each has room to bulk up.
Water in and rest. Water once to settle them, then keep on the dry side until growth resumes. Do not feed until leaves are actively growing.

Aftercare

After replanting white trumpet sinningia, keep the soil barely moist — not wet — until shoots appear; bulbs and tubers rot in cold, saturated soil. Once leaves are growing strongly, resume normal watering. Hold off feeding until the plant is in active growth again.

The right soil mix for white trumpet sinningia

white trumpet sinningia wants airy, peat-free gesneriad mix. A blend of coir, coarse perlite, and fine bark in equal parts provides the fast drainage and aeration the tuber needs. Avoid dense potting compost; compaction leads to root and tuber rot. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting white trumpet sinningia — frequently asked questions

How often should you repot white trumpet sinningia?

Lift and divide every 3–4 years once clumps congest for white trumpet sinningia. white trumpet sinningia is lifted and divided, not "repotted". Every 3–4 years, once the foliage has died back and it is dormant, lift the clump, separate the offsets, and replant at the correct depth in airy, peat-free gesneriad mix. Crowding, not pot size, is what reduces flowering over time.

What size pot does white trumpet sinningia need?

When is the best time of year to repot white trumpet sinningia?

Do you "repot" white trumpet sinningia, or lift and divide it?

You lift and divide it. white trumpet sinningia grows from bulbs or tubers, so instead of repotting you wait for dormancy, lift the congested clump, separate the healthy offsets, and replant them at the right depth and spacing. Doing this every 3–4 years restores flowering.

Should you fertilise white trumpet sinningia after repotting?

Hold off feeding white trumpet sinningia until it is in active growth again. Fresh soil already carries enough nutrients to get it re-established, and feeding disturbed roots too soon does more harm than good.