Triangle fig (Ficus triangularis) care

Trees · straightforward to keep

Triangle fig (Ficus triangularis) wants bright light, including some direct sun. Water it every 8 days. Water when the top 5 cm is dry, thoroughly, and empty the saucer. Ficus hate both extremes and will drop leaves to tell you about either. Pot it in free-draining loam-based compost. Balanced feed at half strength every two to four weeks in spring and summer, and repot every 1.5 years. Humidity: room humidity is adequate; above 50% reduces leaf drop. Mildly toxic to cats and dogs.

A small ficus with stiff, triangular leaves held flat along the stem, usually sold in its variegated form with cream margins. It is more compact and slower than the other figs here and makes a good shelf plant rather than a floor tree.

Quick facts

Water: Water every 8 days. Water when the top 5 cm is dry, thoroughly, and empty the saucer. Ficus hate both extremes and will drop leaves to tell you about either.
Light: Bright light, including some direct sun.
Humidity: Room humidity is adequate; above 50% reduces leaf drop.
Soil: Free-draining loam-based compost.
Feeding: Balanced feed at half strength every two to four weeks in spring and summer.
Repotting: Repot every 1.5 years.
Toxic to pets: Mildly toxic to cats and dogs. The milky sap irritates the mouth and stomach and can irritate skin on contact, so wear gloves when pruning.
Difficulty: Straightforward.
Mature size: 60–120 cm indoors.
Native to: Southern Africa.

Watering a Triangle fig

Water every 8 days. Water when the top 5 cm is dry, thoroughly, and empty the saucer. Ficus hate both extremes and will drop leaves to tell you about either.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Bright light, and the more the better — several hours of direct morning sun suits them. These are canopy trees, not understorey plants, and the leggy, leaf-dropping ficus in a dim corner is the single most common indoor failure of the genus.

Humidity and temperature

Room humidity is adequate; above 50% reduces leaf drop. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

A loam-based compost (John Innes No. 2 or its equivalent) with perlite mixed through. Ficus want weight and structure around the roots rather than the airy mixes aroids like.

Feeding

Balanced feed at half strength every two to four weeks in spring and summer. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot every 1.5 years. Every second or third spring, one size up. A ficus resents disturbance and will usually drop leaves after repotting — that is normal and passes in a month.

Common problems

Leaves dropping after you moved it
Ficus dislike change — light, temperature, position, all of it.

Fix: Put it somewhere bright and leave it there. Resist the urge to fix it; the drop stops within a few weeks.
Brown spots spreading from the leaf edges
Overwatering. The roots are suffocating.

Fix: Let the top third dry out fully before the next water, and check the pot drains freely.
Bare lower stem, leaves only at the top
Not enough light.

Fix: Move it into the brightest spot you have and prune the top back in spring — it branches from below the cut.
Sticky leaves and a black sooty film
Scale insects on the stems and leaf undersides.

Fix: Scrape them off with a fingernail, then treat with horticultural soap every week for a month.

Propagation

Take a stem cutting with two or three leaves in late spring, dip the cut end in water to stop the sap flowing, then root it in damp compost under a bag. Air layering is more reliable for a thick woody stem.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Mildly toxic to cats and dogs. The milky sap irritates the mouth and stomach and can irritate skin on contact, so wear gloves when pruning.

Questions people ask

How often should you water a Triangle fig?

Water every 8 days as a starting point — that is the cadence PlantParlour sets for Ficus triangularis. Water when the top 5 cm is dry, thoroughly, and empty the saucer. Ficus hate both extremes and will drop leaves to tell you about either. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does a Triangle fig need?

Is Triangle fig toxic to cats and dogs?