Soil & potting mix

Best soil for Geranium cinereum 'Lawrence Flatman' (Geranium cinereum 'Lawrence Flatman')

Also called Lawrence Flatman cranesbill.

More about geranium cinereum 'lawrence flatman'

Geranium cinereum 'Lawrence Flatman' soil at a glance

Best mix	Gritty, sharply drained neutral to alkaline soil
Light	Direct sun (at least 4-6 hours)
Ideal temperature	-15 to 24°C (5 to 75°F)
Watering	When the top few centimetres are dry; keep on the dry side once established

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.

Preferred mix: Gritty, sharply drained neutral to alkaline soil

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.

Why geranium cinereum 'lawrence flatman' needs this mix

Geranium cinereum 'Lawrence Flatman' is a Mediterranean dry-hillside plant — it wants a lean, sharply drained, slightly alkaline mix, and rots fast in rich, water-holding soil.

Geranium cinereum 'Lawrence Flatman' evolved on stony, sun-baked slopes — its roots expect to dry out hard and quickly between rains, so the mix must drain almost as fast as you pour.
A lean, low-nutrient mix keeps growth firm and aromatic; a rich one gives soft, sappy, flavourless growth that flops and rots.
It tolerates and often prefers a slightly alkaline soil, the opposite of most houseplants.

For the full picture on what makes up a good mix, see our guide to the main types of soil and potting media — it explains why each ingredient above behaves the way it does.

What goes wrong with the wrong mix

The wrong soil is one of the most common reasons geranium cinereum 'lawrence flatman' struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:

Rich, moisture-holding compost is the classic killer of geranium cinereum 'lawrence flatman' — especially over a cold, wet winter, when the base of the plant simply rots.
A peaty, acidic potting mix is doubly wrong: too wet and the wrong pH direction.
No grit means the rootball stays damp for days, which a dry-climate root system never copes with.

Growing geranium cinereum 'lawrence flatman' in ordinary rich, moisture-retentive compost. Lean it out with at least a third grit, and never let it sit wet over winter.

pH — does it matter for geranium cinereum 'lawrence flatman'?

Geranium cinereum 'Lawrence Flatman' likes neutral to slightly alkaline soil, roughly pH 6.5-7.5. If your soil or compost is acidic, a little garden lime or extra grit nudges it the right way — the one common plant where you may add lime.

If you want to check or adjust it, the soil pH guide walks through testing and the safe ways to nudge a mix more acidic or more alkaline.

DIY mix vs a bagged one

Bagged "herb" or "Mediterranean" mixes are usually fine for geranium cinereum 'lawrence flatman', but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.

Drainage and the pot

Sharp drainage is everything: a terracotta pot with a big hole, gritty mix and never a saucer left full. Raised beds suit these herbs outdoors for the same reason.

A gritty mix barely breaks down, so geranium cinereum 'lawrence flatman' needs little repotting — refresh the top layer and the grit every couple of years rather than potting on aggressively. When the time comes, our repotting guide for geranium cinereum 'lawrence flatman' covers the timing and technique step by step.

Geranium cinereum 'Lawrence Flatman' soil — frequently asked questions

What is the best soil mix for geranium cinereum 'lawrence flatman'?

2 parts standard peat-free compost or loam : 1 part coarse horticultural grit : 1 part perlite or coarse sand. Geranium cinereum 'Lawrence Flatman' evolved on stony, sun-baked slopes — its roots expect to dry out hard and quickly between rains, so the mix must drain almost as fast as you pour.

Can I use normal potting soil for geranium cinereum 'lawrence flatman'?

Rich, moisture-holding compost is the classic killer of geranium cinereum 'lawrence flatman' — especially over a cold, wet winter, when the base of the plant simply rots. Bagged "herb" or "Mediterranean" mixes are usually fine for geranium cinereum 'lawrence flatman', but most standard composts need cutting hard with grit. The DIY ratio above is cheap and exactly right.

Does geranium cinereum 'lawrence flatman' need a special pH?

Should I buy a bagged mix or make my own for geranium cinereum 'lawrence flatman'?

How often should I refresh the soil for geranium cinereum 'lawrence flatman'?

A gritty mix barely breaks down, so geranium cinereum 'lawrence flatman' needs little repotting — refresh the top layer and the grit every couple of years rather than potting on aggressively. Sharp drainage is everything: a terracotta pot with a big hole, gritty mix and never a saucer left full. Raised beds suit these herbs outdoors for the same reason.