Repotting guide

When & how to repot Reitz's sinningia (Sinningia reitzii)

Also called Reitz's sinningia.

More about reitz's sinningia

About Reitz's sinningia

Sinningia reitzii · also called Reitz's sinningia · flowering

Sinningia reitzii is a tuberous Brazilian gesneriad bearing vivid scarlet tubular flowers on upright stems above soft, hairy foliage. Named after the Brazilian botanist Raulino Reitz, it is a compact grower suited to bright windowsills. Like all sinningias, it undergoes a winter dormancy during which watering should be withdrawn.

Mature size: 20–35 cm tall in bloom; 20–25 cm spread

How to tell reitz's sinningia needs repotting

Repotting on a calendar is less reliable than reading the plant. For reitz's 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 reitz's 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 reitz's sinningia

Lift and divide every 3–4 years once clumps congest. Rather than a true repot, reitz's sinningia is lifted and divided once the clump congests and flowering drops off. Compact upright tuberous perennial with seasonal dormancy.

What size pot to step reitz's sinningia up to

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

Step-by-step: repotting reitz's sinningia

Wait for dormancy. Let reitz's 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 well-aerated 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 reitz's 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 reitz's sinningia

Reitz's sinningia wants well-aerated peat-free gesneriad mix. Combine coir with coarse perlite (1:1) and a small addition of fine pine bark. The mix should drain rapidly and not compact over the season. Repot in fresh medium each spring when the tuber shows new growth. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting reitz's sinningia — frequently asked questions

How often should you repot reitz's sinningia?

Lift and divide every 3–4 years once clumps congest for reitz's sinningia. Reitz's 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 well-aerated peat-free gesneriad mix. Crowding, not pot size, is what reduces flowering over time.

What size pot does reitz's sinningia need?

When is the best time of year to repot reitz's sinningia?

Do you "repot" reitz's sinningia, or lift and divide it?

You lift and divide it. Reitz's 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 reitz's sinningia after repotting?

Hold off feeding reitz's 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.