Repotting guide

When & how to repot Chives (Allium schoenoprasum)

Also called common chives, onion chives.

About Chives

Allium schoenoprasum · also called common chives, onion chives · herb

Chives are hardy perennial onion-family herbs grown for hollow grass-like leaves and edible purple pompom flowers. Easy and long-lived in pots or gardens. Toxic to cats and dogs like all alliums — keep away from pets.

Allium schoenoprasum, a hardy clump-forming perennial onion relative that grows from clusters of small underground bulbs, producing fine hollow leaves and round pink-purple flower heads in mid-summer.

Tolerates a wide range of soils but performs best in soil high in organic matter; propagated by dividing clumps (about 4-6 bulbs each) in early spring.

Mature size: 20-30 cm tall

Watch for — Rust on leaves: Orange spots; cut back and improve air flow.

Sources: extension.umn.edu, extension.illinois.edu, rhs.org.uk

How to tell chives needs repotting

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

Flowering has tailed off year on year and the clump has become congested and overcrowded.
Lots of leaf and few flowers — a classic sign that chives bulbs or tubers need lifting and dividing.
Bulbs visibly bursting the pot or pushing each other to the surface.
It is the natural dormancy window (foliage yellowed and died back) — the only safe time to lift and split.

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 chives

Lift and divide every 3–4 years once clumps congest. Rather than a true repot, chives is lifted and divided once the clump congests and flowering drops off. Clumping perennial bulb.

What size pot to step chives up to

Pot size matters less than depth and spacing here. When you replant chives, set the bulbs or tubers at the correct depth (a rough guide: two to three times their own height of soil over the top) and space them so they are not touching. A wide, shallow pot suits a clump better than a tall narrow one.

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 chives

The only safe window is dormancy: wait until the foliage has yellowed and died back naturally, lift and divide then, and replant before or at the start of the next growing season. Disturbing chives in full growth or flower sets it back badly.

Step-by-step: repotting chives

Wait for dormancy. Let chives foliage yellow and die back completely. Lifting while it is in growth wastes the energy it is storing for next year.
Lift carefully. Loosen the soil well away from the bulbs/tubers with a fork and ease the whole clump out without spearing them.
Separate the offsets. Gently pull the clump apart into individual bulbs or tubers. Keep only firm, healthy, blemish-free ones.
Replant at the right depth. Reset them in fresh rich free-draining loam at the correct depth and spacing — not touching — so each has room to bulk up.
Water in and rest. Water once to settle them, then keep on the dry side until growth resumes. Do not feed until leaves are actively growing.

Aftercare

After replanting chives, keep the soil barely moist — not wet — until shoots appear; bulbs and tubers rot in cold, saturated soil. Once leaves are growing strongly, resume normal watering. Hold off feeding until the plant is in active growth again.

The right soil mix for chives

Chives wants rich free-draining loam. pH 6.0-7.0. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting chives — frequently asked questions

How often should you repot chives?

Lift and divide every 3–4 years once clumps congest for chives. Chives is lifted and divided, not "repotted". Every 3–4 years, once the foliage has died back and it is dormant, lift the clump, separate the offsets, and replant at the correct depth in rich free-draining loam. Crowding, not pot size, is what reduces flowering over time.

What size pot does chives need?

When is the best time of year to repot chives?

Do you "repot" chives, or lift and divide it?

You lift and divide it. Chives grows from bulbs or tubers, so instead of repotting you wait for dormancy, lift the congested clump, separate the healthy offsets, and replant them at the right depth and spacing. Doing this every 3–4 years restores flowering.

Should you fertilise chives after repotting?

Hold off feeding chives until it is in active growth again. Fresh soil already carries enough nutrients to get it re-established, and feeding disturbed roots too soon does more harm than good.