Repotting guide

When & how to repot Showy Sinningia (Sinningia conspicua)

Also called Showy Sinningia, Conspicuous Sinningia, Brazilian Foxglove.

More about showy sinningia

About Showy Sinningia

Sinningia conspicua · also called Showy Sinningia, Conspicuous Sinningia · flowering

Sinningia conspicua is a tuberous perennial native to Brazil, forming compact rosettes of soft, velvety, mid-green hairy leaves from which it produces upright spikes of large pale-to-mid-yellow tubular flowers with cinnamon or purple internal markings from early summer through to autumn. Its foxglove-like flowers have a subtle lemon fragrance and are comparatively easy to grow under glass or as a houseplant in bright filtered light. After flowering, allow the foliage to die back naturally and keep the tuber dry over winter. The ASPCA lists Sinningia (Gloxinia) as non-toxic to cats and dogs.

Mature size: Typically reaches 25–30 cm (10–12 in) tall in flower.

Watch for — Crown and stem rot: Water that pools at the crown rots the soft stem tissue rapidly; always water at the soil margin, not over the rosette, and ensure the pot drains freely after every watering.

How to tell showy sinningia needs repotting

Repotting on a calendar is less reliable than reading the plant. For showy 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 showy 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 showy sinningia

Lift and divide every 3–4 years once clumps congest. Rather than a true repot, showy sinningia is lifted and divided once the clump congests and flowering drops off. Compact rosette-forming tuberous perennial with upright flower spikes in summer..

What size pot to step showy sinningia up to

Pot size matters less than depth and spacing here. When you replant showy 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 showy 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 showy sinningia in full growth or flower sets it back badly.

Step-by-step: repotting showy sinningia

Wait for dormancy. Let showy 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 peat-free well-draining potting compost 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 showy 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 showy sinningia

Showy Sinningia wants peat-free well-draining potting compost. Use a peat-free multi-purpose compost mixed with perlite (approximately 3:1) for good drainage and aeration; repot tubers into fresh compost each spring. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting showy sinningia — frequently asked questions

How often should you repot showy sinningia?

Lift and divide every 3–4 years once clumps congest for showy sinningia. Showy 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 peat-free well-draining potting compost. Crowding, not pot size, is what reduces flowering over time.

What size pot does showy sinningia need?

When is the best time of year to repot showy sinningia?

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

You lift and divide it. Showy 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 showy sinningia after repotting?

Hold off feeding showy 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.