Repotting guide

When & how to repot Adriatic Bellflower (Campanula garganica)

Also called Adriatic Bellflower, Gargano Bellflower.

More about adriatic bellflower

About Adriatic Bellflower

Campanula garganica · also called Adriatic Bellflower, Gargano Bellflower · flowering

Adriatic Bellflower is a vigorous, spreading alpine native to cliffs and rocky slopes of the Gargano peninsula in southern Italy. It produces a profusion of star-shaped, bright blue flowers with white centres from late spring through summer. Ideal for rock gardens, wall crevices, and container edges, it is more tolerant of heat and drought than most Campanulas.

Mature size: 10–15 cm tall, spreading 30–50 cm wide

Watch for — Root rot in heavy soil: Clay or compacted soil retains moisture and causes root rot. Amend planting areas generously with grit or gravel, or grow in raised beds. Avoid planting in low-lying areas where water collects.

How to tell adriatic bellflower needs repotting

Repotting on a calendar is less reliable than reading the plant. For adriatic bellflower, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

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 adriatic bellflower

Every 2–3 years, into bone-dry mix. Adriatic Bellflower's growth habit — low, spreading perennial; trailing to semi-erect stems forming loose mats — sets the pace. Adriatic Bellflower is a vigorous, spreading alpine native to cliffs and rocky slopes of the Gargano peninsula in southern Italy. It produces a profusion of star-shaped, bright blue flowers with white centres from late spring through summer. Ideal for rock gardens, wall crevices, and container edges, it is more tolerant of heat and drought than most Campanulas.

What size pot to step adriatic bellflower up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Adriatic Bellflower stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

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 adriatic bellflower

Spring or summer, while adriatic bellflower is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting adriatic bellflower

Repot dry. Do not water adriatic bellflower for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty free-draining, gritty or rocky soil ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set adriatic bellflower at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep adriatic bellflower completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for adriatic bellflower

Adriatic Bellflower wants free-draining, gritty or rocky soil. Tolerates poor, thin soils that drain rapidly. A mix of loam and 30–40% coarse grit is ideal. Neutral to alkaline pH (6.5–8.0). Will naturalize in dry stone wall mortar joints where few other plants thrive. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting adriatic bellflower — frequently asked questions

How often should you repot adriatic bellflower?

Every 2–3 years, into bone-dry mix for adriatic bellflower. Repot adriatic bellflower every 2–3 years into a snug pot of free-draining, gritty or rocky soil, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does adriatic bellflower need?

When is the best time of year to repot adriatic bellflower?

Should you water adriatic bellflower after repotting?

No — not straight away. Repot adriatic bellflower into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise adriatic bellflower after repotting?

Not immediately. Wait about 3 weeks after repotting adriatic bellflower. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.