Fertilising guide
How to fertilise Wild Strawberry (Fragaria vesca)— schedule & NPK
Also called wild strawberry, woodland strawberry, fraise des bois.
More about wild strawberry
About Wild Strawberry
Fragaria vesca · also called wild strawberry, woodland strawberry · edible
Wild or woodland strawberry (Fragaria vesca) is a dainty perennial bearing tiny, intensely aromatic berries from late spring into autumn. Far more shade-tolerant than garden strawberries, it thrives at woodland edges, in dappled borders, and as ground cover or edging. It spreads quickly by runners, naturalises readily, and tolerates a wide range of soils.
Growth habit: Low, mat-forming herbaceous perennial that spreads vigorously by runners to form ground cover. It produces small white flowers and tiny conical or rounded berries over a long season, and self-seeds freely, naturalising in informal and woodland gardens.
What fertiliser wild strawberry actually wants — and why
Wild Strawberry feeds in two distinct phases — balanced to build the plant, then high-potassium the moment flowering starts to set and fill a heavy crop.
Balanced (even N-P-K) at planting for roots and frame, then switch to a high-potassium ("high-potash") tomato-style feed once the first flowers open — potassium is what sizes and ripens fruit, not nitrogen.
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 strawberry: 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 strawberry, 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 strawberry:
Undemanding; an annual spring mulch of leaf mould or compost is usually enough. For containers, a light balanced feed in spring and an occasional high-potassium feed during fruiting keeps it productive. Avoid heavy nitrogen feeding, which produces lush foliage and few of the tiny berries. So: a balanced feed or compost at planting, then a high-potash liquid every 1-2 weeks from first flower through harvest across the main season (spring through early autumn).
The dormant-season rule matters more than the exact interval: skip feeding entirely when wild strawberry 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 strawberry
Follow the crop-feed label rate for wild strawberry — these are calibrated for hungry vegetables. Consistency through fruiting matters more than strength; erratic feeding causes problems like blossom-end rot.
Feeding always goes onto already-damp soil, never dry roots — water wild strawberry first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the wild strawberry watering schedule.
Signs you are over-feeding wild strawberry
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for wild strawberry:
- Vigorous dark-green leafy growth but few flowers or fruit (excess nitrogen).
- Lush foliage hiding the crop; soft growth prone to pests and disease.
- Salt crust on the soil and scorched leaf edges in containers.
Signs you are under-feeding wild strawberry
- Pale, yellowing lower leaves and stunted growth.
- Small fruit, poor set, and a quickly exhausted plant.
- Blossom-end rot and weak cropping from erratic or insufficient feeding.
If the symptoms point at watering, light or roots rather than nutrition, the full wild strawberry care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
In containers, fertiliser salts build up fast — water wild strawberry thoroughly so excess drains from the base each time, and flush pots with plain water every few weeks to prevent a damaging salt build-up.
Organic vs synthetic feeds for wild strawberry
Organic options
Garden compost or well-rotted manure dug in before planting, plus a liquid comfrey or seaweed feed once fruiting starts. UK: comfrey feed or organic Tomorite; US: Espoma Tomato-tone or Neptune's Harvest. Builds soil and feeds in one.
Synthetic / liquid feeds
A balanced feed at planting then a high-potash tomato feed in fruiting — UK: Growmore at planting then Tomorite (Levington) or Phostrogen; US: a balanced 10-10-10 then Miracle-Gro Tomato or a bloom booster.
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 strawberry — frequently asked questions
What fertiliser does wild strawberry need?
Balanced (even N-P-K) at planting for roots and frame, then switch to a high-potassium ("high-potash") tomato-style feed once the first flowers open — potassium is what sizes and ripens fruit, not nitrogen. Wild Strawberry feeds in two distinct phases — balanced to build the plant, then high-potassium the moment flowering starts to set and fill a heavy crop.
How often should I feed wild strawberry?
Undemanding; an annual spring mulch of leaf mould or compost is usually enough. For containers, a light balanced feed in spring and an occasional high-potassium feed during fruiting keeps it productive. Avoid heavy nitrogen feeding, which produces lush foliage and few of the tiny berries. Undemanding; an annual spring mulch of leaf mould or compost is usually enough. For containers, a light balanced feed in spring and an occasional high-potassium feed during fruiting keeps it productive. Avoid heavy nitrogen feeding, which produces lush foliage and few of the tiny berries. So: a balanced feed or compost at planting, then a high-potash liquid every 1-2 weeks from first flower through harvest across the main season (spring through early autumn).
What strength of feed for wild strawberry?
Follow the crop-feed label rate for wild strawberry — these are calibrated for hungry vegetables. Consistency through fruiting matters more than strength; erratic feeding causes problems like blossom-end rot.
What does over-feeding wild strawberry look like?
Vigorous dark-green leafy growth but few flowers or fruit (excess nitrogen). Lush foliage hiding the crop; soft growth prone to pests and disease. Salt crust on the soil and scorched leaf edges in containers. Staying on a high-nitrogen feed once wild strawberry starts flowering is the classic error — you get a huge leafy plant and a disappointing crop. Switch to high-potash the moment flowers appear.
Should I flush the soil of wild strawberry?
In containers, fertiliser salts build up fast — water wild strawberry thoroughly so excess drains from the base each time, and flush pots with plain water every few weeks to prevent a damaging salt build-up.
Keep reading
- Wild Strawberry care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water wild strawberry — 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 3899 fertilising guides in the Growli library