Fertilising guide

How to fertilise Geranium cinereum 'Ballerina' (Geranium cinereum 'Ballerina')— schedule & NPK

Also called Ballerina cranesbill, Ballerina grey-leaved geranium.

More about geranium cinereum 'ballerina'

About Geranium cinereum 'Ballerina'

Geranium cinereum 'Ballerina' · also called Ballerina cranesbill, Ballerina grey-leaved geranium · flowering

Geranium cinereum 'Ballerina' is a long-blooming alpine cranesbill forming a low rosette of soft grey-green leaves. From late spring it produces a long succession of cupped, pale lilac-pink flowers boldly veined and blotched in deep purple-maroon. Compact and sun-loving, it is ideal for rock gardens, troughs, gravel and the very front of well-drained borders.

Growth habit: Low, compact, clump-forming alpine perennial making a tight evergreen-to-semi-evergreen rosette that spreads slowly; mat-like rather than rhizomatous-running.

Watch for — Decline in shade or rich soil: Too little sun or over-feeding makes growth loose and floppy with sparse flowers. Site in full sun and keep the soil lean and gritty.

What fertiliser geranium cinereum 'ballerina' actually wants — and why

Geranium cinereum 'Ballerina' is a heavy-blooming flower with a big appetite — a regular high-potash feed through the season is what drives a long, dense display.

A high-potassium ("high-potash") flowering feed — tomato-style or a dedicated bloom/rose feed. Potassium powers flowering; a high-nitrogen feed gives you a leafy plant with disappointing bloom.

For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for geranium cinereum 'ballerina': match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.

How often to feed geranium cinereum 'ballerina', and which months

Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For geranium cinereum 'ballerina':

Very light feeder. Avoid rich feeding, which spoils the compact habit. A weak balanced feed once in spring or a thin grit-and-compost top-dressing is all it needs. For a hungry bloomer that means feeding regularly — sparingly through the growing season — right through flowering across the main season (spring through early autumn), tapering as blooming ends.

The dormant-season rule matters more than the exact interval: skip feeding entirely when geranium cinereum 'ballerina' is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.

What strength to mix for geranium cinereum 'ballerina'

Follow the flowering-feed label rate for geranium cinereum 'ballerina', or half strength if feeding very frequently. These plants genuinely use the nutrients — under-feeding shows up fast as a thin display.

Feeding always goes onto already-damp soil, never dry roots — water geranium cinereum 'ballerina' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the geranium cinereum 'ballerina' watering schedule.

Signs you are over-feeding geranium cinereum 'ballerina'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for geranium cinereum 'ballerina':

Lots of lush leaves but few flowers (too much nitrogen).
Scorched leaf edges and salt crust from too-strong or too-frequent feeds.
Soft, sappy growth prone to aphids and mildew.

Signs you are under-feeding geranium cinereum 'ballerina'

Sparse, small, short-lived flowers and pale foliage.
A tired plant that stops blooming early in the season.
Weak growth and poor repeat-flowering after the first flush.

If the symptoms point at watering, light or roots rather than nutrition, the full geranium cinereum 'ballerina' care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Container-grown geranium cinereum 'ballerina' accumulates feed salts fast with frequent feeding — water until it drains each time and flush pots with plain water every few weeks to prevent scorch.

Organic vs synthetic feeds for geranium cinereum 'ballerina'

Organic options

A liquid comfrey or seaweed feed (naturally potassium-rich) plus compost or well-rotted manure as a mulch. UK: comfrey feed, organic Tomorite, or rose feed; US: Espoma Rose-tone or Neptune's Harvest. Feeds and improves soil.

Synthetic / liquid feeds

A high-potash flowering feed on a regular cadence — UK: Tomorite (Levington), Phostrogen or a specialist rose feed; US: Miracle-Gro Bloom Booster or a rose food. Fast, reliable bloom response.

Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.

Fertilising geranium cinereum 'ballerina' — frequently asked questions

What fertiliser does geranium cinereum 'ballerina' need?

A high-potassium ("high-potash") flowering feed — tomato-style or a dedicated bloom/rose feed. Potassium powers flowering; a high-nitrogen feed gives you a leafy plant with disappointing bloom. Geranium cinereum 'Ballerina' is a heavy-blooming flower with a big appetite — a regular high-potash feed through the season is what drives a long, dense display.

How often should I feed geranium cinereum 'ballerina'?

Very light feeder. Avoid rich feeding, which spoils the compact habit. A weak balanced feed once in spring or a thin grit-and-compost top-dressing is all it needs. Very light feeder. Avoid rich feeding, which spoils the compact habit. A weak balanced feed once in spring or a thin grit-and-compost top-dressing is all it needs. For a hungry bloomer that means feeding regularly — sparingly through the growing season — right through flowering across the main season (spring through early autumn), tapering as blooming ends.

What strength of feed for geranium cinereum 'ballerina'?

What does over-feeding geranium cinereum 'ballerina' look like?

Lots of lush leaves but few flowers (too much nitrogen). Scorched leaf edges and salt crust from too-strong or too-frequent feeds. Soft, sappy growth prone to aphids and mildew. Using a high-nitrogen general feed on geranium cinereum 'ballerina' is the headline mistake — you grow a big leafy plant with few flowers. The second is simply under-feeding a genuinely hungry bloomer and getting a sparse, short display.

Should I flush the soil of geranium cinereum 'ballerina'?