Repotting guide

When & how to repot Hydrangea 'Let's Dance Rhythmic Blue' (Hydrangea macrophylla 'Let's Dance Rhythmic Blue')

Also called Let's Dance Rhythmic Blue Hydrangea, Reblooming Bigleaf Hydrangea.

More about hydrangea 'let's dance rhythmic blue'

About Hydrangea 'Let's Dance Rhythmic Blue'

Hydrangea macrophylla 'Let's Dance Rhythmic Blue' · also called Let's Dance Rhythmic Blue Hydrangea, Reblooming Bigleaf Hydrangea · flowering

Hydrangea macrophylla 'Let's Dance Rhythmic Blue' is a compact reblooming bigleaf hydrangea that flowers on both old and new wood, giving a much longer display than traditional macrophylla types. Blooms range from deep blue in acidic soil to rose-pink in alkaline soil. Its repeat-flowering habit makes it more forgiving of frost damage to buds. All Hydrangea parts are mildly toxic to pets.

Mature size: 60-90 cm tall and wide

How to tell hydrangea 'let's dance rhythmic blue' needs repotting

Repotting on a calendar is less reliable than reading the plant. For hydrangea 'let's dance rhythmic blue', 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 hydrangea 'let's dance rhythmic blue') 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 hydrangea 'let's dance rhythmic blue'

Only every 2–4 years, when genuinely crowded. Hydrangea 'Let's Dance Rhythmic Blue' 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. Compact, rounded deciduous shrub.

What size pot to step hydrangea 'let's dance rhythmic blue' up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Hydrangea 'Let's Dance Rhythmic Blue' 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 hydrangea 'let's dance rhythmic blue' 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 hydrangea 'let's dance rhythmic blue'

Early spring, just as new growth restarts, is the ideal window for hydrangea 'let's dance rhythmic blue'. 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 hydrangea 'let's dance rhythmic blue'

Confirm it actually needs it. Slide hydrangea 'let's dance rhythmic blue' 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 hydrangea 'let's dance rhythmic blue' 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 fertile, moisture-retentive, humus-rich loam; ph-sensitive for colour, 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 hydrangea 'let's dance rhythmic blue' 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 hydrangea 'let's dance rhythmic blue'

Hydrangea 'Let's Dance Rhythmic Blue' wants fertile, moisture-retentive, humus-rich loam; ph-sensitive for colour. For blue flowers, maintain pH 5.0–5.5 with ericaceous compost or aluminium sulphate. For pink, pH 6.0–7.0 is fine. Improve with generous organic matter. In containers, ericaceous compost is the simplest way to achieve and maintain blue blooms. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting hydrangea 'let's dance rhythmic blue' — frequently asked questions

How often should you repot hydrangea 'let's dance rhythmic blue'?

Only every 2–4 years, when genuinely crowded for hydrangea 'let's dance rhythmic blue'. Only repot hydrangea 'let's dance rhythmic blue' 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 fertile, moisture-retentive, humus-rich loam; ph-sensitive for colour. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does hydrangea 'let's dance rhythmic blue' need?

When is the best time of year to repot hydrangea 'let's dance rhythmic blue'?

Does hydrangea 'let's dance rhythmic blue' like to be root-bound?

Yes — hydrangea 'let's dance rhythmic blue' 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 hydrangea 'let's dance rhythmic blue' after repotting?

Not immediately. Wait about 4 weeks after repotting hydrangea 'let's dance rhythmic blue'. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.