Fertilising guide
How to fertilise Chinese Broccoli 'Kailaan Green' (Brassica oleracea var. alboglabra 'Kailaan Green')— schedule & NPK
Also called Kailaan Green gai lan, Chinese kale cultivar.
More about chinese broccoli 'kailaan green'
About Chinese Broccoli 'Kailaan Green'
Brassica oleracea var. alboglabra 'Kailaan Green' · also called Kailaan Green gai lan, Chinese kale cultivar · edible
'Kailaan Green' is a gai lan (Chinese broccoli), grown for its thick, sweet flowering stems, blue-green leaves and small white-budded heads rather than a large curd. A fast cool-season brassica, it is harvested young as whole stems before the buds open. Flavour is mild, broccoli-like with a faint mustard edge; it crops quickly and regrows after cutting.
Growth habit: Upright, single-stemmed brassica with broad blue-green leaves topped by a loose cluster of white flower buds; sends out side shoots after the main stem is cut.
What fertiliser chinese broccoli 'kailaan green' actually wants — and why
Chinese Broccoli 'Kailaan Green' is grown entirely for its leaves, so nitrogen is the priority — steady, nitrogen-leaning feeding keeps it growing fast, tender and unbolted.
A nitrogen-leaning feed (higher first number) or compost-rich soil — nitrogen drives the fast, tender leafy growth this crop is grown for. Phosphorus and potassium matter far less here than for fruiting crops.
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 chinese broccoli 'kailaan green': 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 chinese broccoli 'kailaan green', 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 chinese broccoli 'kailaan green':
Feed with a balanced fertiliser at sowing and side-dress with nitrogen once plants are 10-15 cm tall to drive stem growth. A liquid feed every 2-3 weeks sustains regrowth after the first cut. In practice: a balanced or compost-rich start, then a nitrogen side-dress or liquid feed every 3-4 weeks through the cropping period in the main season (spring through early autumn).
The dormant-season rule matters more than the exact interval: skip feeding entirely when chinese broccoli 'kailaan green' 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 chinese broccoli 'kailaan green'
Use the vegetable-feed label rate for chinese broccoli 'kailaan green'. Steady availability matters more than a strong dose — a check in growth makes leaves tough and can trigger bolting.
Feeding always goes onto already-damp soil, never dry roots — water chinese broccoli 'kailaan green' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the chinese broccoli 'kailaan green' watering schedule.
Signs you are over-feeding chinese broccoli 'kailaan green'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for chinese broccoli 'kailaan green':
- Very soft, floppy, dark-green growth that attracts aphids.
- Excess leafy growth at the expense of hearts/heads in cabbage and the like.
- Salt crust and scorched leaf edges in containers; nitrate-heavy leaves.
Signs you are under-feeding chinese broccoli 'kailaan green'
- Pale, yellow-green leaves, oldest first, and slow growth.
- Small, tough, bitter leaves and premature bolting.
- Weak, stunted heads in cabbage, broccoli and cauliflower.
If the symptoms point at watering, light or roots rather than nutrition, the full chinese broccoli 'kailaan green' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
For container-grown chinese broccoli 'kailaan green', water until it drains freely each time and flush pots monthly with plain water to stop nitrogen salts accumulating; in the ground, good compost levels naturally buffer this.
Organic vs synthetic feeds for chinese broccoli 'kailaan green'
Organic options
Well-rotted manure or compost dug in, plus nitrogen-rich liquid feeds like diluted chicken-manure pellets or nettle feed. UK: pelleted chicken manure or Westland; US: Espoma Garden-tone or blood meal. Steady and soil-building.
Synthetic / liquid feeds
A balanced feed at planting then a high-nitrogen liquid or granular side-dress — UK: Growmore then a nitrogen feed or Phostrogen; US: a 10-10-10 then a high-N (e.g. 21-0-0) side-dress or Miracle-Gro.
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 chinese broccoli 'kailaan green' — frequently asked questions
What fertiliser does chinese broccoli 'kailaan green' need?
A nitrogen-leaning feed (higher first number) or compost-rich soil — nitrogen drives the fast, tender leafy growth this crop is grown for. Phosphorus and potassium matter far less here than for fruiting crops. Chinese Broccoli 'Kailaan Green' is grown entirely for its leaves, so nitrogen is the priority — steady, nitrogen-leaning feeding keeps it growing fast, tender and unbolted.
How often should I feed chinese broccoli 'kailaan green'?
Feed with a balanced fertiliser at sowing and side-dress with nitrogen once plants are 10-15 cm tall to drive stem growth. A liquid feed every 2-3 weeks sustains regrowth after the first cut. Feed with a balanced fertiliser at sowing and side-dress with nitrogen once plants are 10-15 cm tall to drive stem growth. A liquid feed every 2-3 weeks sustains regrowth after the first cut. In practice: a balanced or compost-rich start, then a nitrogen side-dress or liquid feed every 3-4 weeks through the cropping period in the main season (spring through early autumn).
What strength of feed for chinese broccoli 'kailaan green'?
Use the vegetable-feed label rate for chinese broccoli 'kailaan green'. Steady availability matters more than a strong dose — a check in growth makes leaves tough and can trigger bolting.
What does over-feeding chinese broccoli 'kailaan green' look like?
Very soft, floppy, dark-green growth that attracts aphids. Excess leafy growth at the expense of hearts/heads in cabbage and the like. Salt crust and scorched leaf edges in containers; nitrate-heavy leaves. Letting chinese broccoli 'kailaan green' run short of nitrogen mid-crop is the main mistake — growth checks, leaves toughen and brassicas/leafy greens bolt or turn bitter. Keep nitrogen steadily available.
Should I flush the soil of chinese broccoli 'kailaan green'?
For container-grown chinese broccoli 'kailaan green', water until it drains freely each time and flush pots monthly with plain water to stop nitrogen salts accumulating; in the ground, good compost levels naturally buffer this.
Keep reading
- Chinese Broccoli 'Kailaan Green' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water chinese broccoli 'kailaan green' — 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 tomato
- How to fertilise pepper
- How to fertilise cucumber
- All 5561 fertilising guides in the Growli library