Fertilising guide

How to fertilise Pelargonium 'Fragrans' (Pelargonium 'Fragrans')— schedule & NPK

Also called Nutmeg geranium, Fragrant pelargonium.

More about pelargonium 'fragrans'

About Pelargonium 'Fragrans'

Pelargonium 'Fragrans' · also called Nutmeg geranium, Fragrant pelargonium · herb

Pelargonium 'Fragrans' is a compact, bushy scented-leaf pelargonium with small, grey-green, ruffled leaves giving off a warm nutmeg-and-pine scent. A tender perennial often used as a fragrant edging or potted herb, it bears small white flowers and forms a neat dome. It prefers full sun, lean gritty compost and dislikes overwatering.

Growth habit: Compact, dense and bushy with small ruffled grey-green leaves; forms a tidy low dome rather than a tall or trailing shape.

What fertiliser pelargonium 'fragrans' actually wants — and why

Pelargonium 'Fragrans' 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 'fragrans': 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 'fragrans', 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 'fragrans':

Feed every 2-3 weeks from spring to late summer with a balanced liquid feed at half strength; this lean-loving plant needs less than vigorous types. Too much nitrogen weakens both habit and scent. Do not feed in 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 'fragrans' 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 'fragrans'

Half strength is a sensible default for pelargonium 'fragrans' — 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 'fragrans' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the pelargonium 'fragrans' watering schedule.

Signs you are over-feeding pelargonium 'fragrans'

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

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 'fragrans'

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 'fragrans' care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Pot-grown pelargonium 'fragrans' 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 'fragrans'

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 'fragrans' — frequently asked questions

What fertiliser does pelargonium 'fragrans' 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 'Fragrans' 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 'fragrans'?

Feed every 2-3 weeks from spring to late summer with a balanced liquid feed at half strength; this lean-loving plant needs less than vigorous types. Too much nitrogen weakens both habit and scent. Do not feed in winter. Feed every 2-3 weeks from spring to late summer with a balanced liquid feed at half strength; this lean-loving plant needs less than vigorous types. Too much nitrogen weakens both habit and scent. Do not feed in 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 'fragrans'?