Fertilising guide

How to fertilise Fig 'Black Mission' (Ficus carica 'Black Mission')— schedule & NPK

Also called Black Mission fig, Mission fig.

More about fig 'black mission'

About Fig 'Black Mission'

Ficus carica 'Black Mission' · also called Black Mission fig, Mission fig · edible

'Black Mission' is a heat-loving fig bearing rich, deep-purple-black figs with sweet, jammy flesh, widely grown in California and warm regions. This deciduous, often double-cropping cultivar needs long, hot summers and full sun; in cool climates it suits a large container that can be sheltered over winter.

Growth habit: Large, vigorous deciduous tree with a spreading canopy and big lobed leaves; can double-crop (breba plus main) in long-summer climates. Pruned hard or root-restricted to stay manageable.

What fertiliser fig 'black mission' actually wants — and why

Fig 'Black Mission' 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 fig 'black mission': 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 fig 'black mission', 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 fig 'black mission':

The dormant-season rule matters more than the exact interval: skip feeding entirely when fig 'black mission' 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 fig 'black mission'

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

Signs you are over-feeding fig 'black mission'

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

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 fig 'black mission'

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 fig 'black mission' 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 fig 'black mission' 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 fig 'black mission'

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 fig 'black mission' — frequently asked questions

What fertiliser does fig 'black mission' 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. Fig 'Black Mission' 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 fig 'black mission'?

Feed container trees with a high-potash liquid fertiliser every one to two weeks through the growing season. In the ground, only feed poor soils lightly; surplus nitrogen favours foliage over the heavy fruiting this cultivar is known for. Feed container trees with a high-potash liquid fertiliser every one to two weeks through the growing season. In the ground, only feed poor soils lightly; surplus nitrogen favours foliage over the heavy fruiting this cultivar is known for. 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 fig 'black mission'?

What does over-feeding fig 'black mission' 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 fig 'black mission' 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 fig 'black mission'?