Ficus Alii (Ficus maclellandii 'Alii') is the elegant, willowy ficus: long, narrow, glossy leaves that hang like a willow from slender branches, on a plant that grows into a graceful small tree. It has the refined look of a weeping fig but a calmer temperament — it sheds far fewer leaves when conditions change, which is why it has become a favourite for offices and living rooms.
This guide covers everything Ficus Alii needs: light, water, humidity, temperature, soil, repotting, feeding and the problems that show up when something is off. The care facts come from our plant database. Treat it like a weeping fig with a steadier nerve: bright indirect light, consistent watering, no cold draughts and no sudden moves, and it will grow into a tall, narrow tree that suits corners where a bushier plant would crowd the room.
Ficus Alii at a glance
| Care factor | What this plant needs |
|---|---|
| Botanical name | Ficus maclellandii 'Alii' |
| Light | bright indirect |
| Water | every 1–2 weeks; let top soil dry |
| Humidity | moderate |
| Temperature | 60–85°F (16–29°C) |
| Repotting | every 2–3 years |
| Pet safety | toxic to cats and dogs |
Light
Give your ficus alii bright indirect light. For most homes that means a spot a metre or so from a bright window, or right beside an east- or west-facing window where the sun is gentler. Direct midday sun through a south-facing window can scorch the leaves, leaving pale, papery patches that do not heal, so a sheer curtain or a step back from the glass is worth it in summer.
Too little light is the more common mistake. Growth slows, stems stretch towards the window, and the leaves get smaller and duller. If the plant leans hard in one direction, rotate the pot a quarter turn every couple of weeks so it grows evenly. Our grow-light calculator can help work out how much light your spot actually provides.
Watering
Water every 1–2 weeks; let top soil dry. Push a finger into the soil before you water: if it is still damp near the top, wait; if it is dry, water thoroughly until water runs out of the drainage holes, then let the excess drain away completely and empty the saucer. Never let the plant sit in standing water — soggy soil is the fastest way to kill a ficus, and it is far more common than underwatering.
Water less in winter, when growth slows and the soil stays wet longer, and more in summer, when the plant is actively growing. If you are unsure how much water your pot needs, our watering calculator gives a starting point based on pot size, and our watering schedule generator can help you build a routine. Signs of overwatering include yellowing lower leaves and soft, dark stems; signs of underwatering include drooping leaves and dry, crispy edges.
Humidity and temperature
Ficus Alii prefers moderate humidity and temperatures of 60–85°F (16–29°C). Most homes sit within that temperature range for most of the year, so temperature is rarely a problem indoors — the things to watch are cold draughts in winter, radiators that dry the air, and cold windows that chill the leaves overnight. Keep the plant away from all three.
Humidity is the factor most people underestimate. In a heated home in winter the air can be much drier than this plant likes, and the first sign is usually brown, crispy leaf edges. A pebble tray under the pot, grouping plants together, or a small humidifier all raise the humidity around the plant. Misting does very little — the water evaporates in minutes. Our humidity and temperature checker can tell you whether your room suits this plant.
Soil and potting
Indoors, this plant needs a rich but free-draining potting mix. Standard potting soil on its own holds too much water and compacts over time, so mix it with perlite or orchid bark to keep air around the roots — the roots need oxygen as much as they need water. A pot with drainage holes is not optional; without one, water has nowhere to go and root rot follows. Our potting-mix calculator can work out the parts for a homemade mix for your pot size.
Repotting
Repot every 2–3 years, or sooner if roots are circling the drainage holes or pushing out of the top of the pot. Move up only one pot size — a pot that is too big holds wet soil the roots cannot use. Spring is the best time to repot, when the plant is about to grow, and fresh mix gives the roots a new supply of air and nutrients. Our repotting calculator can help you work out the next pot size and how much fresh mix you will need.
Feeding
Feed during the growing season, in spring and summer, with a balanced liquid houseplant fertiliser, and do not feed in autumn and winter when the plant is barely growing. Always follow the directions on the label — more fertiliser is not better, and excess salts build up in the soil and burn the roots, which often shows up as brown leaf tips. A monthly feed at half strength is a safe routine for most ficus, and flushing the soil with plain water every few months washes out accumulated salts.
Propagation
Ficus Alii is propagated from stem cuttings. In spring or early summer, take a cutting with a few leaves and at least one node — the knobbly bump where a leaf meets the stem — and root it in water or moist potting mix in a warm, bright spot. Rooting takes several weeks, so be patient and keep the mix lightly damp, not wet. Air layering is the other reliable method for a tall plant: wound a stem, wrap it in damp moss and plastic, and wait for roots to form before cutting below them.
Common problems and fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Leaf drop | Sudden moves, drafts or watering changes | See below |
| Brown leaf edges | Low humidity or underwatering | See below |
| Yellow leaves | Overwatering | See below |
Leaf drop
Likely cause: sudden moves, drafts or watering changes. Do not move the plant, keep it away from draughts and heating vents, and keep your watering routine steady. Leaf drop after a move usually stops once the plant settles, and new leaves follow within a few weeks.
Brown leaf edges
Likely cause: low humidity or underwatering. Brown edges usually mean dry air or inconsistent watering. Raise the humidity with a humidifier or by grouping plants together, water before the soil dries out completely, and flush the soil with plain water now and then to wash out fertiliser salts.
Yellow leaves
Likely cause: overwatering. Let the soil dry more between waterings, check the pot drains freely, and remove the leaf once fully yellow. One yellow old lower leaf is normal ageing; several at once points to watering.
Frequently asked questions
How often should I water ficus alii?
Every 1–2 weeks; let top soil dry. Always check the soil with a finger first rather than watering on a fixed day, because the interval changes with the season and pot size. Water thoroughly when the soil is dry and let the excess drain away.
How much light does ficus alii need?
It needs bright indirect light. A spot near an east-facing window usually suits it well. Too little light gives slow, stretched growth and dull leaves; harsh direct sun can scorch the leaves.
Is ficus alii safe for cats and dogs?
According to the data used for this guide, ficus alii is toxic to cats and dogs. Keep it out of reach of pets that chew plants, and if a pet eats any of it, contact your vet.
When should I repot ficus alii?
Repot every 2–3 years, or sooner if roots circle out of the drainage holes. Move up only one pot size, use fresh free-draining mix, and repot in spring.
Why are the lower leaves on my ficus alii dropping?
A few lower leaves dropping over time is normal ageing on a ficus alii — the plant sheds its oldest leaves as it grows taller, and the bare lower trunk is part of its tree-like look. It is only a problem if many leaves drop at once, which usually means a sudden change, a draught or an inconsistent watering routine. Keep the plant in one spot, water steadily and check for cold air from a nearby door or window.
Related guides
Browse the full houseplants hub for more species care guides, or try the tools hub for calculators that help with watering, light and repotting.