Repotting guide

When & how to repot Kohleria 'Hannah Roberts' (Kohleria 'Hannah Roberts')

Also called Hannah Roberts kohleria.

More about kohleria 'hannah roberts'

About Kohleria 'Hannah Roberts'

Kohleria 'Hannah Roberts' · also called Hannah Roberts kohleria · flowering

Kohleria 'Hannah Roberts' is a popular rhizomatous gesneriad cultivar bearing showy bell-shaped flowers in pink-to-red densely freckled with deeper spots, set against soft hairy green leaves. Growing from scaly water-storing rhizomes that make it forgiving, it flowers over a long season in bright indirect light and warmth, as long as its fuzzy foliage is kept dry.

Mature size: Generally 30-60 cm tall; pinch the growing tips to keep it full and compact.

Watch for — Leaf spotting: Droplets resting on the fuzzy leaves leave marks and invite fungus. Water at the base or from below and avoid misting the foliage.

How to tell kohleria 'hannah roberts' needs repotting

Repotting on a calendar is less reliable than reading the plant. For kohleria 'hannah roberts', watch for these signs:

Roots spiralling thickly out of the drainage holes or pushing the whole plant up out of the pot.
The pot is so packed that water runs straight through in seconds and barely wets the soil.
It has split a plastic pot, or the rootball is a solid mass with almost no soil left when you slide it out.
Growth and (for kohleria 'hannah roberts') flowering have clearly stalled despite good light and feeding — but remember this plant likes being snug, so a little crowding alone is not a reason to repot.

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 kohleria 'hannah roberts'

Only every 2–4 years, when genuinely crowded. Kohleria 'Hannah Roberts' is one of the plants that genuinely prefers a snug pot — it grows and flowers better with its roots a little restricted, so resist the urge to repot it on schedule. Upright to slightly arching rhizomatous cultivar with hairy leaves; spreads via scaly underground rhizomes and reblooms freely over a long season..

What size pot to step kohleria 'hannah roberts' up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Kohleria 'Hannah Roberts' positively prefers a snug pot: it flowers and grows better when the roots are a little restricted. The single biggest repotting mistake here is over-potting — dropping kohleria 'hannah roberts' into a pot two or three sizes up. All that surplus soil holds water the small root system cannot use, stays cold and wet, and rots the roots within weeks. When in doubt, choose the smaller pot.

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 kohleria 'hannah roberts'

Early spring, just as new growth restarts, is the ideal window for kohleria 'hannah roberts'. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting kohleria 'hannah roberts'

Confirm it actually needs it. Slide kohleria 'hannah roberts' out and check the roots. Only continue if it is genuinely packed — this plant prefers a snug pot, so if there is still soil and room, put it straight back.
Pick a pot only one size up. Choose a pot just 2–3 cm wider with good drainage. Resist anything bigger; over-potting is the main killer here.
Ease it out gently. Water lightly the day before, then tip kohleria 'hannah roberts' out, supporting the base. Tease the outer roots free only enough to stop them circling.
Repot at the same depth. Add a layer of fresh light, well-draining gesneriad mix, set the plant so the soil line sits exactly where it did before, and backfill around the sides, firming lightly.
Settle it in. Water once to settle the soil, then let it sit. Hold off on more water until the top of the soil dries — fresh soil around a small root system stays wet for a while.

Aftercare

Because the new soil holds more water than the old crammed rootball did, ease right back on watering — let the top of the soil dry before you water kohleria 'hannah roberts' again, or you will rot the roots in the very pot you just moved it to. Keep it out of harsh direct sun for a fortnight. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for kohleria 'hannah roberts'

Kohleria 'Hannah Roberts' wants light, well-draining gesneriad mix. An African-violet mix or peat/coir lightened with perlite gives both moisture retention and aeration for its shallow surface rhizomes. Dense, water-logged compost rots the rhizomes, so prioritise drainage. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting kohleria 'hannah roberts' — frequently asked questions

How often should you repot kohleria 'hannah roberts'?

Only every 2–4 years, when genuinely crowded for kohleria 'hannah roberts'. Only repot kohleria 'hannah roberts' every 2–4 years, and only when it is genuinely root-bound — it flowers and grows best slightly crowded. Step up just one pot size in spring using light, well-draining gesneriad mix. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does kohleria 'hannah roberts' need?

When is the best time of year to repot kohleria 'hannah roberts'?

Does kohleria 'hannah roberts' like to be root-bound?

Yes — kohleria 'hannah roberts' genuinely flowers and grows best when slightly pot-bound, so do not rush to repot it. The mistake to avoid is over-potting into a much larger pot: the excess soil stays wet, the roots cannot use it, and the plant rots. Only repot every few years and only one snug size up.

Should you fertilise kohleria 'hannah roberts' after repotting?

Not immediately. Wait about 4 weeks after repotting kohleria 'hannah roberts'. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.