Repotting guide

When & how to repot Ivan Cranesbill (Geranium 'Ivan')

Also called Ivan Cranesbill, Hardy Geranium 'Ivan', Cranesbill 'Ivan'.

More about ivan cranesbill

About Ivan Cranesbill

Geranium 'Ivan' · also called Ivan Cranesbill, Hardy Geranium 'Ivan' · flowering

Geranium 'Ivan' is a tall, vigorous, mound-forming hardy cranesbill of garden origin, valued for its striking magenta-red flowers with dark veining and a near-black eye — similar in character to Geranium psilostemon but more spreading. It thrives in any moderately fertile, well-drained soil in full sun to partial shade, and is remarkably cold-hardy, tolerating temperatures well below -20 °C. The single most important care step is cutting back flowered stems after the main summer flush to encourage fresh foliage and a second wave of blooms. True Geranium (cranesbill) species are not listed as toxic by the ASPCA and are widely regarded as pet-safe; note that ASPCA's toxic 'Geranium' entry refers to Pelargonium, a separate genus.

Mature size: 50-90 cm tall by 80-100 cm wide after 2-5 years.

Watch for — Vine weevil: C-shaped cream grubs eat roots below soil level, causing sudden wilting and plant collapse; treat with nematodes (Steinernema kraussei) in late summer when soil is warm, or use container-safe vine weevil compost.

How to tell ivan cranesbill needs repotting

Repotting on a calendar is less reliable than reading the plant. For ivan cranesbill, 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 ivan cranesbill) 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 ivan cranesbill

Only every 2–4 years, when genuinely crowded. Ivan Cranesbill 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. Spreading, mound-forming herbaceous perennial that dies back to ground level in winter..

What size pot to step ivan cranesbill up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Ivan Cranesbill 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 ivan cranesbill 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 ivan cranesbill

Early spring, just as new growth restarts, is the ideal window for ivan cranesbill. 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 ivan cranesbill

Confirm it actually needs it. Slide ivan cranesbill 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 ivan cranesbill 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 moderately fertile, well-drained, 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 ivan cranesbill 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 ivan cranesbill

Ivan Cranesbill wants moderately fertile, well-drained. Tolerant of chalk, clay, loam, and sand; the only firm requirement is that water does not pool around roots — improve heavy clay with grit or coarse compost before planting. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting ivan cranesbill — frequently asked questions

How often should you repot ivan cranesbill?

Only every 2–4 years, when genuinely crowded for ivan cranesbill. Only repot ivan cranesbill 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 moderately fertile, well-drained. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does ivan cranesbill need?

When is the best time of year to repot ivan cranesbill?

Does ivan cranesbill like to be root-bound?

Yes — ivan cranesbill 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 ivan cranesbill after repotting?

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