Repotting guide

When & how to repot Geranium clarkei 'Kashmir Purple' (Geranium clarkei 'Kashmir Purple')

Also called Kashmir Purple cranesbill.

More about geranium clarkei 'kashmir purple'

About Geranium clarkei 'Kashmir Purple'

Geranium clarkei 'Kashmir Purple' · also called Kashmir Purple cranesbill · flowering

Geranium clarkei 'Kashmir Purple' is a vigorous, spreading hardy cranesbill with deeply divided leaves and large, saucer-shaped lilac-purple flowers veined in a deeper violet through summer. Tolerant of most soils including clay and adaptable to sun or part shade, it forms reliable, weed-suppressing ground cover for borders and naturalistic plantings.

Mature size: About 40-60 cm tall and 60-90 cm or more wide, spreading freely by rhizomes.

Watch for — Post-flowering sprawl: Growth can flop and brown after the main flush. A hard cut-back restores compact leaves and often a second, lighter bloom.

How to tell geranium clarkei 'kashmir purple' needs repotting

Repotting on a calendar is less reliable than reading the plant. For geranium clarkei 'kashmir purple', 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 geranium clarkei 'kashmir purple') 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 geranium clarkei 'kashmir purple'

Only every 2–4 years, when genuinely crowded. Geranium clarkei 'Kashmir Purple' 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. Vigorous, rhizomatous, spreading perennial forming broad weed-suppressing colonies; herbaceous, dying back over winter and reshooting strongly in spring..

What size pot to step geranium clarkei 'kashmir purple' up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Geranium clarkei 'Kashmir Purple' 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 geranium clarkei 'kashmir purple' 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 geranium clarkei 'kashmir purple'

Early spring, just as new growth restarts, is the ideal window for geranium clarkei 'kashmir purple'. 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 geranium clarkei 'kashmir purple'

Confirm it actually needs it. Slide geranium clarkei 'kashmir purple' 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 geranium clarkei 'kashmir purple' 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 most moderately fertile soils, including clay, 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 geranium clarkei 'kashmir purple' 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 geranium clarkei 'kashmir purple'

Geranium clarkei 'Kashmir Purple' wants most moderately fertile soils, including clay. Adaptable and clay-tolerant, unlike the alpine cinereum types. Grows in any reasonably fertile, well-drained-to-average soil across a broad pH range; compost boosts vigour and bloom. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting geranium clarkei 'kashmir purple' — frequently asked questions

How often should you repot geranium clarkei 'kashmir purple'?

Only every 2–4 years, when genuinely crowded for geranium clarkei 'kashmir purple'. Only repot geranium clarkei 'kashmir purple' 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 most moderately fertile soils, including clay. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does geranium clarkei 'kashmir purple' need?

When is the best time of year to repot geranium clarkei 'kashmir purple'?

Does geranium clarkei 'kashmir purple' like to be root-bound?

Yes — geranium clarkei 'kashmir purple' 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 geranium clarkei 'kashmir purple' after repotting?

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