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Fertilising guide

How to fertilise White Periwinkle (Vinca minor 'Alba')— schedule & NPK

Also called White Periwinkle, White Lesser Periwinkle, Alba Periwinkle.

More about white periwinkle

About White Periwinkle

Vinca minor 'Alba' · also called White Periwinkle, White Lesser Periwinkle · flowering

White Periwinkle is the pure white-flowered cultivar of Vinca minor, offering the same vigorous, trailing, shade-tolerant groundcover habit with clean white pinwheel blooms from spring through early summer. The white flowers provide striking contrast against dark glossy foliage and brighten shaded corners of the garden. Care requirements are identical to the species.

Growth habit: Trailing, mat-forming evergreen subshrub; spreads by rooting stems

What fertiliser white periwinkle actually wants — and why

White Periwinkle 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 white periwinkle: 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 white periwinkle, 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 white periwinkle:

Little or no feeding required in average garden soil. In very poor soils, a balanced spring feed improves flower number. Avoid high-nitrogen fertilisers, which promote excessive vegetative spread at the expense of the white blooms. 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 white periwinkle 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 white periwinkle

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

Signs you are over-feeding white periwinkle

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

Signs you are under-feeding white periwinkle

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

Flushing and leaching the salts

Flush the pot of white periwinkle 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 white periwinkle

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 white periwinkle — frequently asked questions

What fertiliser does white periwinkle 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. White Periwinkle 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 white periwinkle?

Little or no feeding required in average garden soil. In very poor soils, a balanced spring feed improves flower number. Avoid high-nitrogen fertilisers, which promote excessive vegetative spread at the expense of the white blooms. Little or no feeding required in average garden soil. In very poor soils, a balanced spring feed improves flower number. Avoid high-nitrogen fertilisers, which promote excessive vegetative spread at the expense of the white blooms. 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 white periwinkle?

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

What does over-feeding white periwinkle 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 white periwinkle 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 white periwinkle?

Flush the pot of white periwinkle 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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