Rubber Plant (Ficus elastica) Care: Light, Watering, Propagation and Varieties

The rubber plant (Ficus elastica) is a classic indoor tree with big, glossy, leathery leaves. It grows straight up, is happy to stay in one spot for years and is one of the easier large houseplants to keep. Besides the dark green types, you will find colorful variegated varieties like ‘Tineke’ and ‘Red Ruby’.

How to identify a rubber plant

Ficus elastica belongs to the fig and mulberry family (Moraceae). According to Kew’s Plants of the World Online, it is native from Nepal to western Yunnan in China and western Malesia. In the wild it is a tree that, per the Missouri Botanical Garden, can reach 50–100 feet and develop banyan-like aerial roots that form extra trunks.

Indoors it typically stays between 2 and 10 feet. The leaves are oval, stiff and shiny, 12–18 inches long according to the RHS, often with bronze undersides. Each new leaf unfurls from a pink to purplish sheath (stipule) that drops off once the leaf opens. Any cut leaks a white, milky latex that was once used to make rubber, which is where the name elastica comes from.

Light

Give your rubber plant bright, filtered or indirect light, as the RHS recommends. A few hours of morning or evening sun is fine, especially in winter, but the Missouri Botanical Garden advises protecting it from afternoon sun.

Variegated varieties need more light than plain green ones. A rubber plant will survive in a dim corner, but it grows slowly, gets leggy and may drop leaves. University of Florida guidelines list low light stress as a cause of green leaf drop.

Watering

From spring to late summer, water regularly with room-temperature water and let the potting mix dry out slightly between waterings. In winter, when growth slows, keep it only just moist. Check the top layer with your finger instead of watering on a schedule.

Overwatering is the most common mistake. NC State Extension notes that too much water can cause leaf loss. Use a pot with a drainage hole and empty the saucer after watering.

Soil and repotting

The RHS suggests a loam-based potting mix with added bark for drainage. Every couple of years in spring, move the plant into a pot that is only slightly larger. For big, older plants you can skip repotting and simply replace the top layer of mix each year.

Humidity and temperature

Aim for medium to high humidity. A tray of damp pebbles or clay granules under the pot helps, as long as the pot itself isn’t sitting in water. Wipe dust off the leaves now and then with a damp cloth or sponge, as NC State Extension suggests.

Keep the plant above 50–55°F (10–13°C). For indoor plants, University of Florida guidelines consider 65–80°F (18–27°C) most appropriate. Rubber plants dislike sudden temperature swings and drafts, so avoid spots next to a frequently opened door or directly above a radiator.

Fertilizer

Feed about once a month from spring to late summer with a high-nitrogen fertilizer, which supports leafy growth. Don’t fertilize in winter.

Pruning

For a fuller plant, cut the main stem back just above a leaf in late winter or early spring. Left unpruned, a rubber plant grows into a tall, narrow column. The cut will bleed white sap, so wear gloves: the RHS warns it can irritate skin or aggravate allergies.

How to propagate a rubber plant

Rubber plants can be grown from semi-ripe cuttings in spring or summer, but the RHS recommends a heated propagator for that. A more reliable home method is air layering, where roots form on a stem while it is still attached to the parent plant. Here is the RHS method:

1. In spring, pick a healthy, straight stem that is one to two years old.
2. Strip the leaves and side shoots from a section about 12 inches long.
3. With a sharp knife, make a 1-inch slanting cut through a leaf bud, angled toward the tip, to create a tongue.
4. Pack a little moist sphagnum moss under the tongue to keep the wound open.
5. Wrap the area in a 3–4 inch thick layer of moist sphagnum moss, cover it with plastic and tape both ends. Clear plastic is fine for fast rooters like Ficus.
6. When strong roots are visible through the plastic, remove it and cut the stem just below the new roots.
7. Pot it up, moss and all. Don’t try to pull the moss off the roots.

The RHS says rooting can take up to a year. Taking the top off the parent also acts as a pruning cut, which the Missouri Botanical Garden says encourages a bushier habit.

Variegated and colored varieties

NC State Extension lists these cultivars, among others:

• ‘Tineke’: green leaves variegated with cream or pale yellow,
• ‘Tricolor’: leaves in cream, pink and green,
• ‘Variegata’: light green leaves with white or yellow edges,
• ‘Red Ruby’ (often sold as ‘Ruby’): green leaves splashed with purple, red and white, with reddish-pink stems and ribs,
• ‘Belize’: green leaves with cream, pink and red highlights.

Non-variegated types include ‘Robusta’, which NC State calls the most common, ‘Decora’ with a pale midrib, and the very dark ‘Burgundy’. Variegated plants need a brighter spot, or their contrast fades.

Common problems

Symptom	Cause	Fix
Green leaves dropping	overwatering, cold, drafts, low light	water only after the top dries, move to a steady, warm, brighter spot
Lowest leaf yellows and falls	normal aging	nothing, as long as new growth looks healthy
Brown scorched patches	direct midday or afternoon sun	pull back from the window or filter with a sheer curtain
Fine webbing, pale stippling	spider mites	rinse the leaves, raise humidity, see spider mites
White fluffy clusters in leaf joints	mealybugs	remove and treat, see mealybugs
Brown bumps on stems and veins	scale insects	wipe off, keep checking
Tall bare trunk, small leaves	not enough light	brighter spot, prune above a leaf in spring

Toxicity

NC State Extension flags Ficus elastica as a problem for dogs, cats and horses. The ASPCA does not have a separate entry for this species, but it lists the closely related Ficus benjamina as toxic to dogs and cats, naming the enzyme ficin and psoralen (ficusin) as the toxic principles and gastrointestinal and skin irritation as the signs. The RHS warns that fig sap can irritate skin, so wear gloves when pruning or propagating. Keep the plant out of reach of pets and small children, and call your vet if an animal chews on it. See our list of houseplants toxic to cats and dogs.