Repotting guide

When & how to repot Rotala 'H'ra' (Rotala 'H'ra')

Also called Rotala Hira, compact pink Rotala.

More about rotala 'h'ra'

About Rotala 'H'ra'

Rotala 'H'ra' · also called Rotala Hira, compact pink Rotala · tropical

A popular aquascaping variety closely related to Rotala rotundifolia, valued for fine leaves that flush bright pink to red and stay compact under strong light. Slightly more demanding than standard rotundifolia for top colour, it is a favourite background and midground plant in high-tech planted tanks for its dense, colourful tops.

Mature size: Stems reach 20-40 cm tall and branch freely into a thick clump; trimmed often to form a tight coloured hedge.

Watch for — Leggy, sparse growth: Low light or low CO2 stretches the stems. Raise light and CO2 for the dense, compact form.

How to tell rotala 'h'ra' needs repotting

Repotting on a calendar is less reliable than reading the plant. For rotala 'h'ra', watch for these signs:

Roots poking out of the drainage holes or coiling visibly around the inside of the pot.
You are watering far more often than you used to because the rootball dries out within a day or two.
Water runs straight through and out the bottom without soaking in.
Top growth has slowed or new rotala 'h'ra' leaves are noticeably smaller than older ones despite good light.

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 rotala 'h'ra'

Every 12–18 months — sooner if roots show fast. Rotala 'H'ra''s growth habit — upright branching stem plant that forms dense, fine-leaved colonies with brightly coloured tops; compact and bushy under good light, ideal for layered background groupings. — sets the pace. A popular aquascaping variety closely related to Rotala rotundifolia, valued for fine leaves that flush bright pink to red and stay compact under strong light. Slightly more demanding than standard rotundifolia for top colour, it is a favourite background and midground plant in high-tech planted tanks for its dense, colourful tops.

What size pot to step rotala 'h'ra' up to

Step up one pot size — about 2–3 cm (an inch) wider. Rotala 'H'ra' grows fast, so it will fill that space within a season, but jumping several sizes at once still backfires: the unused soil stays soggy and rots even a vigorous root system. One size at a time, every year or so, is the rhythm.

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 rotala 'h'ra'

Early spring, just as new growth restarts, is the ideal window for rotala 'h'ra'. 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 rotala 'h'ra'

Time it for spring. Repot rotala 'h'ra' in early spring as growth restarts so it re-roots quickly into the fresh soil.
Choose one size up. Pick a pot about 2–3 cm wider with drainage holes. One step only — a much bigger pot stays soggy and rots roots.
Ease the plant out. Water lightly the day before, then tip rotala 'h'ra' out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh aquasoil or nutrient substrate in the new pot, set the plant so its soil line is unchanged, and backfill, firming lightly.
Water and pause feeding. Water once to settle the soil. Hold off fertiliser for about a month — fresh mix already has nutrients and feeding now burns new roots.

Aftercare

Water rotala 'h'ra' once to settle the soil, then let the surface dry before watering again — fresh mix around the roots stays wetter than the old compacted ball, so the commonest post-repot mistake is overwatering. Keep it out of direct sun for a week or two while roots re-establish. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for rotala 'h'ra'

Rotala 'H'ra' wants aquasoil or nutrient substrate. Performs best in active aquasoil but adapts to gravel with root tabs. It feeds substantially from the water column, so consistent liquid dosing matters most. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting rotala 'h'ra' — frequently asked questions

How often should you repot rotala 'h'ra'?

Every 12–18 months — sooner if roots show fast for rotala 'h'ra'. Repot rotala 'h'ra' roughly every 12–18 months, in early spring as growth restarts. It grows fast and circles its pot quickly, so step up one size (about 2–3 cm wider) into fresh aquasoil or nutrient substrate. Don't jump several sizes — that soggy excess soil is what rots vigorous roots.

What size pot does rotala 'h'ra' need?

When is the best time of year to repot rotala 'h'ra'?

Can you put rotala 'h'ra' straight into a much bigger pot?

No. Even a fast-growing rotala 'h'ra' should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise rotala 'h'ra' after repotting?

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