Fertilising guide
How to fertilise Goji Berry (Lycium barbarum)— schedule & NPK
Also called goji berry, wolfberry, Chinese wolfberry.
More about goji berry
About Goji Berry
Lycium barbarum · also called goji berry, wolfberry · edible
The goji or wolfberry is a hardy, sprawling Solanaceae shrub from Asia, grown for its small bright-orange-red berries rich in antioxidants. Tough and drought-tolerant once established, it tolerates poor soil, salt and wind, fruiting on new wood from summer into autumn. Vigorous and arching, it benefits from support or a trellis to keep fruit accessible.
Growth habit: Deciduous, arching to scrambling shrub with long whippy thorny canes that root where they touch ground; fruits on the current season's growth and can sucker into a thicket if unchecked.
Watch for — Bird and pest feeding: Ripe berries attract birds, and aphids gather on soft tips; net fruiting plants and tolerate or wash off light aphid colonies.
What fertiliser goji berry actually wants — and why
Goji Berry 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 goji berry: 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 goji berry, 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 goji berry:
Low feeder; an annual spring mulch or a light balanced feed is plenty. Excess nitrogen produces rampant leafy growth and few berries, so feed sparingly. On very poor soils a single spring application of general fertiliser supports cropping without overstimulating the canes. 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 goji berry 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 goji berry
Follow the crop-feed label rate for goji berry — 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 goji berry first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the goji berry watering schedule.
Signs you are over-feeding goji berry
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for goji berry:
- 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 goji berry
- 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 goji berry 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 goji berry 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 goji berry
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 goji berry — frequently asked questions
What fertiliser does goji berry 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. Goji Berry 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 goji berry?
Low feeder; an annual spring mulch or a light balanced feed is plenty. Excess nitrogen produces rampant leafy growth and few berries, so feed sparingly. On very poor soils a single spring application of general fertiliser supports cropping without overstimulating the canes. Low feeder; an annual spring mulch or a light balanced feed is plenty. Excess nitrogen produces rampant leafy growth and few berries, so feed sparingly. On very poor soils a single spring application of general fertiliser supports cropping without overstimulating the canes. 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 goji berry?
Follow the crop-feed label rate for goji berry — 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 goji berry 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 goji berry 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 goji berry?
In containers, fertiliser salts build up fast — water goji berry 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
- Goji Berry care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water goji berry — 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