Fertilising guide
How to fertilise Clove (Syzygium aromaticum)— schedule & NPK
Also called Clove, Clove Tree, Zanzibar Redhead.
More about clove
About Clove
Syzygium aromaticum · also called Clove, Clove Tree · herb
The source of the world's dried clove spice, this tall tropical tree from the Maluku Islands demands consistently warm, humid, frost-free conditions and takes 6–8 years to first flower. Best grown as a statement container specimen with shade when young; harvest flower buds just before they open for use as a culinary spice.
Growth habit: Narrow, upright evergreen tree with glossy, aromatic, lance-shaped leaves. Naturally pyramidal in youth, becoming rounded and branching with age.
Watch for — Leaf scorch and tip burn: Caused by low humidity, dry air from heating systems, or sudden cold draughts. Increase ambient humidity, move the plant away from radiators or air vents, and mist daily in dry conditions.
What fertiliser clove actually wants — and why
Clove 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 clove: 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 clove, 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 clove:
Feed monthly during active growth with a balanced liquid fertiliser. Cloves grown on poor soils benefit from additional potassium and phosphorus to support flowering. Reduce feeding to once every 6–8 weeks in winter when growth slows. 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 clove 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 clove
Half strength is a sensible default for clove — 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 clove first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the clove watering schedule.
Signs you are over-feeding clove
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for clove:
- 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 clove
- 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 clove care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Pot-grown clove 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 clove
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 clove — frequently asked questions
What fertiliser does clove 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. Clove 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 clove?
Feed monthly during active growth with a balanced liquid fertiliser. Cloves grown on poor soils benefit from additional potassium and phosphorus to support flowering. Reduce feeding to once every 6–8 weeks in winter when growth slows. Feed monthly during active growth with a balanced liquid fertiliser. Cloves grown on poor soils benefit from additional potassium and phosphorus to support flowering. Reduce feeding to once every 6–8 weeks in winter when growth slows. 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 clove?
Half strength is a sensible default for clove — enough to fuel regrowth after cutting, gentle enough that the leaves stay aromatic rather than watery.
What does over-feeding clove 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 clove 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 clove?
Pot-grown clove 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
- Clove care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water clove — 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 camphor catmint
- How to fertilise axillary balm
- How to fertilise seravshan hyssop
- All 8452 fertilising guides in the Growli library