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Fertilising guide

How to fertilise Wild jasmine (Jasminum angulare)— schedule & NPK

Also called Wild jasmine, South African jasmine, Angular jasmine.

More about wild jasmine

About Wild jasmine

Jasminum angulare · also called Wild jasmine, South African jasmine · flowering

A vigorous, evergreen South African twining shrub bearing intensely fragrant, star-shaped white flowers from late summer into autumn. Thrives outdoors only in frost-free climates (USDA 9–11); elsewhere it performs best under cool glass or in a bright conservatory. Give it well-drained, fertile soil and regular water during active growth.

Growth habit: Twining, evergreen scrambling shrub; climbs via twining stems and benefits from wire or trellis support

Watch for — Failure to flower: Insufficient light is the usual cause. Move plants to the brightest available position and reduce nitrogen feeding; excess nitrogen promotes leafy growth at the expense of blooms.

What fertiliser wild jasmine actually wants — and why

Wild jasmine is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.

A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.

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 wild jasmine: 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 wild jasmine, 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 wild jasmine:

Feed with a balanced liquid fertiliser every two to three weeks from spring through late summer. Switch to a low-nitrogen, high-potassium feed as flowering approaches to promote bud set. No feeding needed in winter. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.

The dormant-season rule matters more than the exact interval: skip feeding entirely when wild jasmine 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 wild jasmine

Half strength is the safe default for wild jasmine — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

Feeding always goes onto already-damp soil, never dry roots — water wild jasmine first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the wild jasmine watering schedule.

Signs you are over-feeding wild jasmine

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

Signs you are under-feeding wild jasmine

If the symptoms point at watering, light or roots rather than nutrition, the full wild jasmine care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of wild jasmine with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.

Organic vs synthetic feeds for wild jasmine

Organic options

A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.

Synthetic / liquid feeds

A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.

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 wild jasmine — frequently asked questions

What fertiliser does wild jasmine need?

A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Wild jasmine is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.

How often should I feed wild jasmine?

Feed with a balanced liquid fertiliser every two to three weeks from spring through late summer. Switch to a low-nitrogen, high-potassium feed as flowering approaches to promote bud set. No feeding needed in winter. Feed with a balanced liquid fertiliser every two to three weeks from spring through late summer. Switch to a low-nitrogen, high-potassium feed as flowering approaches to promote bud set. No feeding needed in winter. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.

What strength of feed for wild jasmine?

Half strength is the safe default for wild jasmine — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding wild jasmine look like?

Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding wild jasmine year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.

Should I flush the soil of wild jasmine?

Flush the pot of wild jasmine with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.

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