Fertilising guide
How to fertilise Fragrant Agrimony (Agrimonia procera)— schedule & NPK
Also called Fragrant Agrimony, Scented Agrimony, Tall Agrimony.
More about fragrant agrimony
About Fragrant Agrimony
Agrimonia procera · also called Fragrant Agrimony, Scented Agrimony · herb
Fragrant Agrimony is an aromatic herbaceous perennial native to western and central Europe, distinguished from common agrimony by its taller stature and noticeable apricot-like fragrance from glands on leaf undersides. It bears slender spikes of small, five-petalled yellow flowers in summer. Hardy and undemanding, it thrives in sunny borders and hedgerow margins with minimal care.
Growth habit: Upright, clump-forming herbaceous perennial
Watch for — Slug damage to young growth: Emerging spring shoots are vulnerable to slug and snail feeding. Apply organic pellets or use copper-tape barriers around pots. Damage is rarely severe once plants reach 20 cm height.
What fertiliser fragrant agrimony actually wants — and why
Fragrant Agrimony 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 fragrant agrimony: 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 fragrant agrimony, 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 fragrant agrimony:
Minimal feeding required. In very poor soils, apply a balanced granular fertiliser in early spring. Over-feeding suppresses the natural fragrance and encourages leafy rather than flowering growth. Agrimony is traditionally grown without supplementary feeding. 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 fragrant agrimony 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 fragrant agrimony
Half strength is a sensible default for fragrant agrimony — 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 fragrant agrimony first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the fragrant agrimony watering schedule.
Signs you are over-feeding fragrant agrimony
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for fragrant agrimony:
- 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 fragrant agrimony
- 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 fragrant agrimony care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Pot-grown fragrant agrimony 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 fragrant agrimony
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 fragrant agrimony — frequently asked questions
What fertiliser does fragrant agrimony 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. Fragrant Agrimony 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 fragrant agrimony?
Minimal feeding required. In very poor soils, apply a balanced granular fertiliser in early spring. Over-feeding suppresses the natural fragrance and encourages leafy rather than flowering growth. Agrimony is traditionally grown without supplementary feeding. Minimal feeding required. In very poor soils, apply a balanced granular fertiliser in early spring. Over-feeding suppresses the natural fragrance and encourages leafy rather than flowering growth. Agrimony is traditionally grown without supplementary feeding. 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 fragrant agrimony?
Half strength is a sensible default for fragrant agrimony — enough to fuel regrowth after cutting, gentle enough that the leaves stay aromatic rather than watery.
What does over-feeding fragrant agrimony 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 fragrant agrimony 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 fragrant agrimony?
Pot-grown fragrant agrimony 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
- Fragrant Agrimony care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water fragrant agrimony — 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 vietnamese coriander
- How to fertilise shiso (perilla)
- How to fertilise saw palmetto
- All 8452 fertilising guides in the Growli library