Soil & potting mix

Best soil for Geranium sanguineum var. striatum (Geranium sanguineum var. striatum)

Also called Striped bloody cranesbill, Lancastrian geranium.

More about geranium sanguineum var. striatum

Geranium sanguineum var. striatum soil at a glance

Best mix	Well-drained, moderately fertile soil; tolerates poor, stony ground
Light	Direct sun (at least 4-6 hours)
Ideal temperature	-25 to 27°C (-13 to 80°F)
Watering	Water when top 3-5 cm of soil is dry; drought-tolerant once established

About Geranium sanguineum var. striatum

Geranium sanguineum var. striatum · also called Striped bloody cranesbill, Lancastrian geranium · flowering

Geranium sanguineum var. striatum is a low, mat-forming bloody cranesbill bearing pale shell-pink flowers delicately veined with darker pink, over finely dissected dark-green leaves that redden in autumn. Flowering generously from early to late summer, it is a tough, sun-loving, drought-tolerant groundcover that holds an RHS Award of Garden Merit and excels at the front of dry, sunny borders.

Preferred mix: Well-drained, moderately fertile soil; tolerates poor, stony ground

Watch for — Powdery mildew: White film during hot, dry or crowded spells. Improve airflow, water at soil level, and shear back affected growth.

Why geranium sanguineum var. striatum needs this mix

Geranium sanguineum var. striatum flowers hardest in a rich but free-draining loam — fed enough to fuel the display, open enough that the roots never waterlog.

Flowering is expensive for geranium sanguineum var. striatum: producing buds, blooms and seed draws heavily on nutrients and steady moisture, so the soil has to keep delivering all season.
A loam-based mix holds nutrients and water far more evenly than a light peat mix, which means a longer, more reliable flowering period.
It still needs sharp drainage — most flowering plants resent cold, wet feet far more than they resent being a little lean.

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 sanguineum var. striatum struggles, and the damage often shows up weeks later as a watering problem. For this species specifically:

A thin, hungry or sandy mix gives geranium sanguineum var. striatum weak growth and few, short-lived flowers — it simply runs out of fuel.
A heavy, badly drained soil rots the roots or crown, often over a wet winter, and you lose the plant before it ever flowers again.
Over-rich, high-nitrogen mixes can push lush leaf at the expense of flowers — balance, not excess, is the aim.

Either starving geranium sanguineum var. striatum in a thin mix or drowning it in a heavy, badly drained one. It wants the rich-but-free-draining middle, plus a flowering (higher-potassium) feed in season.

pH — does it matter for geranium sanguineum var. striatum?

Most flowering plants, including geranium sanguineum var. striatum, do well around pH 6.0-7.0. A cheap soil test is worth it outdoors; one notable exception is any acid-lover (such as some hydrangeas), where pH directly changes flower colour.

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

A quality bagged compost works for geranium sanguineum var. striatum in pots if you add grit and a flowering feed. In beds, improving the existing soil with compost and ensuring drainage beats any bag.

Drainage and the pot

Free drainage protects the roots and especially the crown over winter — raised beds, grit in the planting hole and never a waterlogged spot. Containers must have a clear drainage hole.

For perennials, refresh the top layer and feed each spring rather than disturbing the roots; for container displays, start with fresh rich mix each season. When the time comes, our repotting guide for geranium sanguineum var. striatum covers the timing and technique step by step.

Geranium sanguineum var. striatum soil — frequently asked questions

What is the best soil mix for geranium sanguineum var. striatum?

3 parts good loam or quality peat-free compost : 1 part well-rotted compost or leaf mould : 1 part grit or perlite. Flowering is expensive for geranium sanguineum var. striatum: producing buds, blooms and seed draws heavily on nutrients and steady moisture, so the soil has to keep delivering all season.

Can I use normal potting soil for geranium sanguineum var. striatum?

A thin, hungry or sandy mix gives geranium sanguineum var. striatum weak growth and few, short-lived flowers — it simply runs out of fuel. A quality bagged compost works for geranium sanguineum var. striatum in pots if you add grit and a flowering feed. In beds, improving the existing soil with compost and ensuring drainage beats any bag.

Does geranium sanguineum var. striatum need a special pH?

Should I buy a bagged mix or make my own for geranium sanguineum var. striatum?

How often should I refresh the soil for geranium sanguineum var. striatum?

For perennials, refresh the top layer and feed each spring rather than disturbing the roots; for container displays, start with fresh rich mix each season. Free drainage protects the roots and especially the crown over winter — raised beds, grit in the planting hole and never a waterlogged spot. Containers must have a clear drainage hole.