Fertilising guide

How to fertilise Camphor Catmint (Nepeta camphorata)— schedule & NPK

Also called Camphor Catmint, Camphor-Scented Catmint.

More about camphor catmint

About Camphor Catmint

Nepeta camphorata · also called Camphor Catmint, Camphor-Scented Catmint · herb

Camphor Catmint is a strongly aromatic Mediterranean perennial with square stems, grey-green leaves, and small white flowers marked with purple dots. Its distinctive camphor-heavy scent differs from typical catmints. Hardy and drought-tolerant once established, it suits dry herb gardens, gravel plantings, and rock garden edges where drainage is good and sun is plentiful.

Growth habit: Clump-forming, upright to spreading herbaceous perennial

What fertiliser camphor catmint actually wants — and why

Camphor Catmint 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 camphor catmint: 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 camphor catmint, 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 camphor catmint:

Apply a balanced slow-release fertiliser in early spring. Avoid high-nitrogen feeds which produce soft, weakly scented growth prone to flopping. In lean garden soils, no supplemental feeding is typically necessary. 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 camphor catmint 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 camphor catmint

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

Signs you are over-feeding camphor catmint

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

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 camphor catmint

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 camphor catmint care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Pot-grown camphor catmint 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 camphor catmint

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 camphor catmint — frequently asked questions

What fertiliser does camphor catmint 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. Camphor Catmint 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 camphor catmint?

Apply a balanced slow-release fertiliser in early spring. Avoid high-nitrogen feeds which produce soft, weakly scented growth prone to flopping. In lean garden soils, no supplemental feeding is typically necessary. Apply a balanced slow-release fertiliser in early spring. Avoid high-nitrogen feeds which produce soft, weakly scented growth prone to flopping. In lean garden soils, no supplemental feeding is typically necessary. 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 camphor catmint?