Repotting guide

When & how to repot Calibrachoa 'Cabaret Deep Blue' (Calibrachoa × hybrida 'Cabaret Deep Blue')

Also called Cabaret Deep Blue Calibrachoa, Deep Blue Million Bells.

More about calibrachoa 'cabaret deep blue'

About Calibrachoa 'Cabaret Deep Blue'

Calibrachoa × hybrida 'Cabaret Deep Blue' · also called Cabaret Deep Blue Calibrachoa, Deep Blue Million Bells · flowering

A floriferous calibrachoa from the Cabaret series with rich violet-blue, petunia-like bells smothering a mounded, semi-trailing plant. Bred for heat tolerance and non-stop bloom, it thrives in full sun in baskets and patio containers. A hungry, drainage-loving annual, it needs slightly acidic compost and weekly feeding to sustain the saturated blue colour all summer.

Mature size: 20-30 cm tall with a 25-40 cm spread; trails extend further in a large hanging basket.

Watch for — Root and crown rot: Overwatering or poor drainage leads to wilting and blackened stems. Plant in a gritty, free-draining mix and avoid standing water in saucers.

How to tell calibrachoa 'cabaret deep blue' needs repotting

Repotting on a calendar is less reliable than reading the plant. For calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep blue'

Only every 2–4 years, when genuinely crowded. Calibrachoa 'Cabaret Deep 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. Mounding to semi-trailing, forming a dense cushion that spills modestly over container rims; self-cleaning, requiring no deadheading..

What size pot to step calibrachoa 'cabaret deep blue' up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Calibrachoa 'Cabaret Deep 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 calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep blue'

Early spring, just as new growth restarts, is the ideal window for calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep blue'

Confirm it actually needs it. Slide calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep 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 free-draining, slightly acidic potting compost, 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 calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep blue'

Calibrachoa 'Cabaret Deep Blue' wants free-draining, slightly acidic potting compost. A peat-free multipurpose mix with perlite added is ideal. The Cabaret series, like all calibrachoa, prefers a slightly acidic pH (around 5.5-6.5); alkaline mixes cause iron-deficiency yellowing, so pair with an acidic feed. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting calibrachoa 'cabaret deep blue' — frequently asked questions

How often should you repot calibrachoa 'cabaret deep blue'?

Only every 2–4 years, when genuinely crowded for calibrachoa 'cabaret deep blue'. Only repot calibrachoa 'cabaret deep 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 free-draining, slightly acidic potting compost. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does calibrachoa 'cabaret deep blue' need?

When is the best time of year to repot calibrachoa 'cabaret deep blue'?

Does calibrachoa 'cabaret deep blue' like to be root-bound?

Yes — calibrachoa 'cabaret deep 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 calibrachoa 'cabaret deep blue' after repotting?

Not immediately. Wait about 4 weeks after repotting calibrachoa 'cabaret deep 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.