Fertilising guide

How to fertilise Double-flowered Chamomile (Chamaemelum nobile 'Flore Pleno')— schedule & NPK

More about double-flowered chamomile

About Double-flowered Chamomile

Chamaemelum nobile 'Flore Pleno' · herb

Double-flowered Chamomile is an ornamental Roman chamomile cultivar bearing rounded, fully double white pompon flowers above the same aromatic feathery foliage. Low and mat-forming, it suits herb borders, edging, and gentle chamomile lawns. It shares the species' love of full sun, light free-draining soil, and cool airy conditions, and is sterile so spreads vegetatively.

Growth habit: Low, creeping aromatic perennial forming a spreading mat that roots as it goes, sending up wiry stems topped with double pompon flowers in summer. Being sterile, it sets no viable seed and is increased only by division.

What fertiliser double-flowered chamomile actually wants — and why

Double-flowered Chamomile 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 double-flowered chamomile: 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 double-flowered chamomile, 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 double-flowered chamomile:

Minimal feeding suits this lean-soil herb. Skip rich fertilisers; a thin spring mulch of compost is enough. Excess nitrogen produces soft, lanky stems prone to flopping and weakens the aromatic oils, so keep it hungry rather than pampered. 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 double-flowered chamomile 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 double-flowered chamomile

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

Signs you are over-feeding double-flowered chamomile

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

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 double-flowered chamomile

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 double-flowered chamomile care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Pot-grown double-flowered chamomile 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 double-flowered chamomile

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 double-flowered chamomile — frequently asked questions

What fertiliser does double-flowered chamomile 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. Double-flowered Chamomile 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 double-flowered chamomile?

Minimal feeding suits this lean-soil herb. Skip rich fertilisers; a thin spring mulch of compost is enough. Excess nitrogen produces soft, lanky stems prone to flopping and weakens the aromatic oils, so keep it hungry rather than pampered. Minimal feeding suits this lean-soil herb. Skip rich fertilisers; a thin spring mulch of compost is enough. Excess nitrogen produces soft, lanky stems prone to flopping and weakens the aromatic oils, so keep it hungry rather than pampered. 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 double-flowered chamomile?