Repotting guide

When & how to repot Geranium cinereum 'Lawrence Flatman' (Geranium cinereum 'Lawrence Flatman')

Also called Lawrence Flatman cranesbill.

More about geranium cinereum 'lawrence flatman'

About Geranium cinereum 'Lawrence Flatman'

Geranium cinereum 'Lawrence Flatman' · also called Lawrence Flatman cranesbill · flowering

Geranium cinereum 'Lawrence Flatman' is a compact alpine cranesbill with low rosettes of grey-green foliage. Over a long summer season it bears cupped pink flowers heavily veined in crimson-purple with a darker eye, a touch bolder than 'Ballerina'. Sun-loving and tidy, it excels in rock gardens, troughs, gravel beds and free-draining border edges.

Mature size: Around 15 cm tall and 30 cm wide, forming a neat low cushion.

Watch for — Crown and root rot: Caused by wet or heavy soil, particularly over winter. Plant in sharp drainage, grit the crown, and keep mulch off the rosette to prevent collapse.

How to tell geranium cinereum 'lawrence flatman' needs repotting

Repotting on a calendar is less reliable than reading the plant. For geranium cinereum 'lawrence flatman', 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 geranium cinereum 'lawrence flatman'

Every 2–3 years, into bone-dry mix. Geranium cinereum 'Lawrence Flatman''s growth habit — low, mounding, clump-forming alpine perennial making a tight grey-leaved rosette that increases slowly; cushion-like rather than spreading by runners. — sets the pace. Geranium cinereum 'Lawrence Flatman' is a compact alpine cranesbill with low rosettes of grey-green foliage. Over a long summer season it bears cupped pink flowers heavily veined in crimson-purple with a darker eye, a touch bolder than 'Ballerina'. Sun-loving and tidy, it excels in rock gardens, troughs, gravel beds and free-draining border edges.

What size pot to step geranium cinereum 'lawrence flatman' up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Geranium cinereum 'Lawrence Flatman' 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 geranium cinereum 'lawrence flatman'

Spring or summer, while geranium cinereum 'lawrence flatman' 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 geranium cinereum 'lawrence flatman'

Repot dry. Do not water geranium cinereum 'lawrence flatman' 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 gritty, sharply drained neutral to alkaline 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 geranium cinereum 'lawrence flatman' 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 geranium cinereum 'lawrence flatman' 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 geranium cinereum 'lawrence flatman'

Geranium cinereum 'Lawrence Flatman' wants gritty, sharply drained neutral to alkaline soil. Needs free-draining, lean-to-moderate soil and fails in heavy wet clay. Incorporate grit or coarse sand; use gritty compost in containers and aim for neutral-to-alkaline pH. 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 cinereum 'lawrence flatman' — frequently asked questions

How often should you repot geranium cinereum 'lawrence flatman'?

Every 2–3 years, into bone-dry mix for geranium cinereum 'lawrence flatman'. Repot geranium cinereum 'lawrence flatman' every 2–3 years into a snug pot of gritty, sharply drained neutral to alkaline 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 geranium cinereum 'lawrence flatman' need?

When is the best time of year to repot geranium cinereum 'lawrence flatman'?

Should you water geranium cinereum 'lawrence flatman' after repotting?

No — not straight away. Repot geranium cinereum 'lawrence flatman' 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 geranium cinereum 'lawrence flatman' after repotting?

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