Fertilising guide
How to fertilise Pelargonium odoratissimum (Pelargonium odoratissimum)— schedule & NPK
Also called Apple geranium, Apple-scented pelargonium, Nutmeg geranium.
More about pelargonium odoratissimum
About Pelargonium odoratissimum
Pelargonium odoratissimum · also called Apple geranium, Apple-scented pelargonium · herb
Pelargonium odoratissimum is a low, sprawling scented pelargonium prized for soft, velvety apple-scented leaves released when brushed. A tender South African perennial, it forms a spreading mound with small white flowers and is grown for fragrance, potpourri and herbal flavouring rather than showy bloom. It thrives in bright light and gritty, free-draining compost.
Growth habit: Low, spreading and mound-forming with trailing stems and soft, rounded, velvety leaves; tends to sprawl rather than climb.
What fertiliser pelargonium odoratissimum actually wants — and why
Pelargonium odoratissimum 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 odoratissimum: 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 odoratissimum, 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 odoratissimum:
Feed every 2-3 weeks from spring to late summer with a balanced or slightly high-potash liquid feed at half strength. Excess nitrogen produces lush foliage with diluted scent and few flowers. 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 odoratissimum 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 odoratissimum
Half strength is a sensible default for pelargonium odoratissimum — 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 odoratissimum first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the pelargonium odoratissimum watering schedule.
Signs you are over-feeding pelargonium odoratissimum
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for pelargonium odoratissimum:
- 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 odoratissimum
- 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 odoratissimum care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Pot-grown pelargonium odoratissimum 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 odoratissimum
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 odoratissimum — frequently asked questions
What fertiliser does pelargonium odoratissimum 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 odoratissimum 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 odoratissimum?
Feed every 2-3 weeks from spring to late summer with a balanced or slightly high-potash liquid feed at half strength. Excess nitrogen produces lush foliage with diluted scent and few flowers. Stop feeding over winter. Feed every 2-3 weeks from spring to late summer with a balanced or slightly high-potash liquid feed at half strength. Excess nitrogen produces lush foliage with diluted scent and few flowers. 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 odoratissimum?
Half strength is a sensible default for pelargonium odoratissimum — enough to fuel regrowth after cutting, gentle enough that the leaves stay aromatic rather than watery.
What does over-feeding pelargonium odoratissimum look like?
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. Over-feeding pelargonium odoratissimum with strong nitrogen is the usual mistake — it grows fast and lush but the leaves turn bland and it bolts to flower sooner, ending the useful harvest early.
Should I flush the soil of pelargonium odoratissimum?
Pot-grown pelargonium odoratissimum 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.
Keep reading
- Pelargonium odoratissimum care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water pelargonium odoratissimum — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise basil
- How to fertilise herb garden
- How to fertilise mint
- All 5561 fertilising guides in the Growli library