Fertilising guide

How to fertilise Pelargonium crispum 'Variegatum' (Pelargonium crispum 'Variegatum')— schedule & NPK

Also called Variegated lemon geranium, Lemon variegated pelargonium.

More about pelargonium crispum 'variegatum'

About Pelargonium crispum 'Variegatum'

Pelargonium crispum 'Variegatum' · also called Variegated lemon geranium, Lemon variegated pelargonium · herb

'Variegatum' is the variegated lemon geranium, an upright pelargonium with small, crinkled lemon-scented leaves margined in creamy-yellow. Slightly less vigorous than the plain species, it forms a neat columnar plant with pale-pink flowers, valued for both fragrance and bright foliage. Like all scented geraniums it needs full sun, sharp drainage and frost-free shelter.

Growth habit: Upright, narrow, slow-to-moderate evergreen subshrub with small, crisped, cream-margined lemon-scented leaves; tidier and less vigorous than the green species, and good for clipping.

Watch for — Scorched cream margins: The variegated edges burn under intense, magnified heat or abrupt full sun; acclimatise gradually and ensure ventilation.

What fertiliser pelargonium crispum 'variegatum' actually wants — and why

Pelargonium crispum 'Variegatum' is a soft, fast leafy herb that you harvest hard — a modest balanced feed keeps tender growth coming without tipping it into bland or bolting.

A balanced general feed (even N-P-K) at modest strength — enough nitrogen to keep replacing the leaves you pick, but not so much that flavour thins or it bolts to seed.

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 pelargonium crispum 'variegatum': 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 pelargonium crispum 'variegatum', 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 pelargonium crispum 'variegatum':

Feed every 3-4 weeks in spring and summer with a balanced liquid feed at half strength; keep nitrogen low to preserve variegation and avoid soft, reversion-prone growth. Stop feeding over winter. In practice: a balanced liquid feed every few weeks through the main growing and harvesting season (spring through early autumn), more often the harder you are picking it.

The dormant-season rule matters more than the exact interval: skip feeding entirely when pelargonium crispum 'variegatum' 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 pelargonium crispum 'variegatum'

Half strength is a sensible default for pelargonium crispum 'variegatum' — enough to fuel regrowth after cutting, gentle enough that the leaves stay aromatic rather than watery.

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

Signs you are over-feeding pelargonium crispum 'variegatum'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for pelargonium crispum 'variegatum':

Fast, soft, pale growth with diluted, less aromatic flavour.
Early bolting (running to flower) and a bitter edge.
Salt crust and scorched tips on container plants.

Signs you are under-feeding pelargonium crispum 'variegatum'

Pale, slow regrowth after cutting and small leaves.
A tired, stalled plant that cannot keep up with harvesting.
Yellowing older leaves in a long-spent pot.

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

Flushing and leaching the salts

Pot-grown pelargonium crispum 'variegatum' builds up feed salts quickly — water until it drains each time and flush the pot with plain water every few weeks, especially on a sunny windowsill.

Organic vs synthetic feeds for pelargonium crispum 'variegatum'

Organic options

A diluted seaweed feed or worm-casting tea keeps soft growth coming without overdoing it. UK: dilute seaweed or Westland; US: Espoma Garden-tone or Neptune's Harvest. Gentle, hard to overdo, flavour-friendly.

Synthetic / liquid feeds

A balanced liquid feed at half strength through harvesting — UK: Phostrogen, Baby Bio or Westland; US: Miracle-Gro all-purpose at half strength. Fast regrowth; just do not overdo the nitrogen.

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 pelargonium crispum 'variegatum' — frequently asked questions

What fertiliser does pelargonium crispum 'variegatum' need?

A balanced general feed (even N-P-K) at modest strength — enough nitrogen to keep replacing the leaves you pick, but not so much that flavour thins or it bolts to seed. Pelargonium crispum 'Variegatum' is a soft, fast leafy herb that you harvest hard — a modest balanced feed keeps tender growth coming without tipping it into bland or bolting.

How often should I feed pelargonium crispum 'variegatum'?

Feed every 3-4 weeks in spring and summer with a balanced liquid feed at half strength; keep nitrogen low to preserve variegation and avoid soft, reversion-prone growth. Stop feeding over winter. Feed every 3-4 weeks in spring and summer with a balanced liquid feed at half strength; keep nitrogen low to preserve variegation and avoid soft, reversion-prone growth. Stop feeding over winter. In practice: a balanced liquid feed every few weeks through the main growing and harvesting season (spring through early autumn), more often the harder you are picking it.

What strength of feed for pelargonium crispum 'variegatum'?