Fertilising guide

How to fertilise African Bush Mango (Irvingia gabonensis)— schedule & NPK

Also called African bush mango, dika nut, wild mango.

More about african bush mango

About African Bush Mango

Irvingia gabonensis · also called African bush mango, dika nut · edible

African bush mango is a tropical West African canopy tree grown for its mango-like fruit and prized oil-rich dika nut, ground into 'ogbono' for thickening soups. It demands constant warmth, deep fertile soil and high humidity, fruiting only in true tropical or large heated-glasshouse conditions. It is frost-tender and slow to bear, typically 4 to 6 years from seed.

Growth habit: Evergreen tree with a dense, rounded crown, fruiting on mature wood.

What fertiliser african bush mango actually wants — and why

African Bush Mango feeds in two distinct phases — balanced to build the plant, then high-potassium the moment flowering starts to set and fill a heavy crop.

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 african bush mango: 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 african bush mango, 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 african bush mango:

Feed monthly through the warm growing season with a balanced fertiliser; switch to a higher-potassium feed as trees approach fruiting age. Mulch with organic matter to mimic forest-floor nutrition. 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 african bush mango 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 african bush mango

Follow the crop-feed label rate for african bush mango — 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 african bush mango first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the african bush mango watering schedule.

Signs you are over-feeding african bush mango

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

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 african bush mango

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 african bush mango 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 african bush mango 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 african bush mango

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 african bush mango — frequently asked questions

What fertiliser does african bush mango 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. African Bush Mango 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 african bush mango?

Feed monthly through the warm growing season with a balanced fertiliser; switch to a higher-potassium feed as trees approach fruiting age. Mulch with organic matter to mimic forest-floor nutrition. Feed monthly through the warm growing season with a balanced fertiliser; switch to a higher-potassium feed as trees approach fruiting age. Mulch with organic matter to mimic forest-floor nutrition. 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 african bush mango?

What does over-feeding african bush mango 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 african bush mango 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 african bush mango?