Fertilising guide

How to fertilise Junglesop (Anonidium mannii)— schedule & NPK

Also called Oubli, Ibo Custard Apple, Wild Soursop.

More about junglesop

About Junglesop

Anonidium mannii · also called Oubli, Ibo Custard Apple · edible

Junglesop is a large tropical African tree in the custard apple family (Annonaceae), bearing enormous compound fruits that can exceed 5 kg, with white aromatic pulp eaten fresh or fermented. Rarely cultivated outside its native equatorial Africa, it demands constant heat, very high humidity, and partial shade when young. Annonaceae contain acetogenins — potentially harmful if consumed in large quantities.

Growth habit: Large spreading evergreen tree

What fertiliser junglesop actually wants — and why

Junglesop 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 junglesop: 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 junglesop, 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 junglesop:

Apply a balanced slow-release fertiliser with micronutrients twice yearly (spring and early summer). Supplement with monthly liquid feeds during active growth. Magnesium and boron deficiencies are occasionally observed. 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 junglesop 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 junglesop

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

Signs you are over-feeding junglesop

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

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 junglesop

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 junglesop 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 junglesop 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 junglesop

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 junglesop — frequently asked questions

What fertiliser does junglesop 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. Junglesop 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 junglesop?

Apply a balanced slow-release fertiliser with micronutrients twice yearly (spring and early summer). Supplement with monthly liquid feeds during active growth. Magnesium and boron deficiencies are occasionally observed. Apply a balanced slow-release fertiliser with micronutrients twice yearly (spring and early summer). Supplement with monthly liquid feeds during active growth. Magnesium and boron deficiencies are occasionally observed. 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 junglesop?

What does over-feeding junglesop 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 junglesop 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 junglesop?