Houseplant · Moraceae
Rubber Plant
Ficus elastica
Settle it into bright indirect light and one steady spot, and your rubber plant will reward you with a glossy, good-natured indoor tree.
Bright indirect
60–80°F · 16–27°C
USDA 9–12
2–10 ft · 0.6–3 m
Overview
If you are new to bigger houseplants, the rubber plant is a wonderfully kind place to begin. A member of the fig family, it hails from the forests that run from Nepal across to southern China and on into western Malesia, where it grows into a soaring tree. In your home it settles down to a manageable 2 to 10 feet (60 cm to 3 m), and its thick, shining leaves bring real warmth and presence to a room.
What makes it so easy to live with is how much it forgives. It is happiest in bright indirect light yet copes with dimmer corners better than most large leafy plants, and it will quietly overlook the watering you forget now and then. Mostly it just dislikes being unsettled, so giving it a stable home away from drafts keeps every leaf right where it should be.
Snap any part of the plant and it weeps a milky latex sap. That sap is where the rubber plant gets its name, and it is also your gentle cue to pull on gloves at pruning time. Because it can irritate skin and is mildly toxic to cats and dogs, it is worth choosing a spot that keeps both your pets and your people comfortable.
Care
The short version: offer bright indirect light, a warm and settled home, and a good soaking only once the soil surface feels a little dry. Feed it through spring and summer, and reach for gloves any time you cut it.
Light
Set your rubber plant in bright indirect light beside a window where the fierce afternoon sun cannot reach it. It will get by in partial shade or low light as well, though growth eases off there and the variegated kinds fade a little.
Water
Give it a good thorough drink, then simply hold off until the soil surface feels a little dry before the next one. Check that the pot drains and empty whatever gathers in the saucer, because standing water is the quickest path to rotten roots. From fall through late winter, when growth quiets down, you can water less.
Soil
Pot it up in a well drained, soil-based potting mix. It stays relaxed about pH and takes anything from 6.0 to 8.0, so what really matters is choosing a mix that drains freely rather than one that sits heavy and soggy.
Temperature
Keep it comfortable in the 60°F to 80°F (16°C to 27°C) range it loves, with warm days and slightly cooler nights. Hold it above 55°F (13°C) and clear of cold drafts, since a sudden chill is one of the usual reasons leaves let go.
Humidity
Ordinary household air suits it just fine, and there is no humidity number to fuss over. It does lean toward humid air, yet it handles the dry warmth of winter heating without complaint.
Feeding
Feed it every two weeks right through spring and summer with a water-soluble houseplant fertilizer while it is putting on new growth. When light dims and the cooler months arrive, ease right off, because it asks for far less then.
Pruning
Cut back in spring to rein in the height, refresh tall leggy stems, or coax the plant into a fuller shape. Leave it be and it climbs into a tall, tree-like form, so pruning is entirely your call rather than a job you must do. Always wear gloves, since the cuts weep irritating latex.
Repotting
Move it into a new pot in late winter or early spring once it has outgrown its current home. Step it up just a size or two at a time into fresh, well drained mix, and it is worth keeping those gloves on for this job too.
Size & spacing
Indoors your rubber plant climbs to 2 to 10 feet (60 cm to 3 m) tall, picking up speed in good light. Give it floor room and headroom to match, because left unpruned it keeps reaching up toward that tree-like shape.
Troubleshooting
Almost every rubber plant hiccup comes back to watering or a sudden change nearby, and that is reassuring because both are easy to put right. Notice what the leaves and roots are telling you early, match it to the guide below, and a small wobble rarely turns into anything bigger.
Drooping when the soil is already wet
When your plant sags even though its soil feels soaked, the likely culprit is root rot, and the good news is you can still save it. The roots have gone soft and dark and simply can't take up water anymore, which is why it droops in all that wetness. Hold back hard on watering, snip off the dead roots, and give it a fresh start in well draining mix and a pot that truly drains.
Fix:
- Reduce watering
- Repot into a well-drained mix and a pot with drainage holes
- Remove affected roots
Lower leaves going yellow on you
Take heart, because a yellowing rubber plant is usually just telling you the soil has been staying too damp. One or two yellow leaves right at the base are often nothing more than old age, but if the color starts creeping higher, you can fix it gently: water a bit less, confirm the pot drains freely, and pour off anything pooling in the saucer.
Fix:
- Reduce watering frequency
- Ensure the pot has drainage holes and empty the saucer
- Use a well-drained, soil-based mix
Leaves falling after a move or a chill
Try not to panic if leaves start letting go, because this plant simply reacts when its world shifts around it. Not enough light, a cold draft, dry air, or waterlogged roots can each trigger it, and so can carrying it from room to room. The cure is reassuringly simple: settle it into one bright, steady spot away from drafts and heat vents, keep it above 55°F (13°C), and look again at how you water.
Fix:
- Move to a brighter, stable location with bright indirect light
- Keep away from cold drafts and heat sources; keep above 55°F
- Avoid frequently relocating the plant
- Check and correct watering
Sticky leaves, fine webbing, or little bumps on stems
A handful of sap-sucking pests like to visit rubber plants, and once you learn their tells they are easy to catch early. Look for the cottony white fluff of mealybugs, the small hard bumps of scale, the faint webbing and speckling of spider mites, or a tacky shine spreading over the foliage. You have this: wipe the leaves clean, treat with insecticidal soap or horticultural oil, and set the plant on its own until it bounces back.
Fix:
- Wipe or wash insects off the foliage
- Treat with insecticidal soap or horticultural oil
- Isolate the plant until the infestation clears
Toxicity
This is not a houseplant to let anyone chew on. Its milky latex sap holds ficin and a psoralen, which can sting the mouth and stomach of cats and dogs and leave human skin red and tender where it touches. Since no part of it is edible, keep it out of reach of pets and small children and handle it with gloves, and you will both be just fine.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Mild
If a curious cat bites into a leaf, expect drooling and some pawing at the mouth from the stinging latex, and a queasy tummy with a little vomiting may follow. Where the sap touches skin, it can leave a red, sore patch too.
Dogs Mild
A dog that takes a bite often drools and acts mouth-sore, and a bit of vomiting or an unsettled stomach can show up shortly after. The reaction stays gentle, yet the gluey sap may still leave skin irritated where it lands.
Horses Caution
NC State counts this plant as toxic to horses. That same latex would sting the mouth and gut, and while a horse rarely crosses paths with an indoor fig, it pays to keep cuttings and dropped leaves well out of their way.
Rabbits Caution
The milky sap carries the very irritants that trouble cats and dogs, so a rabbit that nibbles risks a sore mouth and an unhappy stomach. It is safest to keep the leaves off the menu entirely.
Livestock Caution
Farm animals that reach the foliage can end up with mouth and digestive upset from the latex. Since it never grows in a pasture, the genuine danger is tossed trimmings or a potted plant left within their reach.
Birds Caution
A pet bird can react to the stinging sap if it chews on the leaves, so it is wise to treat the plant as off-limits and keep perches and cages clear of any foliage.
People Caution
For people, the milky latex irritates skin and eyes and can spark contact dermatitis, above all in anyone allergic to natural-rubber latex. Nothing on the plant is meant to be eaten, so slip on gloves before pruning or repotting and keep the sap away from bare skin.
The milky latex sap can irritate skin and eyes and cause contact dermatitis in sensitive people (Ficus latex also cross-reacts with natural-rubber latex allergy); wear gloves when pruning or repotting
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
Nearly every rubber plant you will meet is one of a few named forms, from plain glossy green to deep maroon and cheerful variegation. Here are the ones worth getting to know.
Robusta
By far the easiest one to find, it wins people over with its big, sturdy, deep green leaves.
Decora
With its wide leaves, this form has stayed a beloved houseplant choice for generations.
Rubra
Its reddish to rich maroon leaves give the plant a darker, more dramatic mood.
Tricolor
You will know this variegated kind by its mix of green and cream brushed with a soft pink blush.
Doescheri
This is one more variegated selection that sits among the prettiest ornamental rubber plants.
How to propagate
Making more rubber plants asks for a touch of patience, but you can absolutely do it: both common methods work reliably once you allow for the slow rooting and the sticky sap.
Stem cuttingsModerate
Spring to summer during active growth · Several weeks to a couple of months to root
Snip stem or tip cuttings while the plant is in active growth across spring or summer. Each cut end weeps milky latex, so simply rinse or dab it away before you settle the cutting into its pot. Be patient here, since roots come along slowly and may need anywhere from several weeks to a couple of months.
Air layeringModerate
Spring to summer · Several weeks to root before separating from the parent
For a tall or leggy specimen, air layering is the friendliest route to a new plant. You coax roots from a stem while it stays joined to the parent, a process that runs several weeks, and only then do you free the young plant once those roots are well formed.
Myths
The rubber plant is a safe, pet-friendly houseplant.
Sadly this one is not pet-safe: the ASPCA flags it as toxic to cats and dogs, and the milky latex can sting skin or upset the stomach. The culprits are ficin, a proteolytic enzyme, and a psoralen in the sap, so set the plant somewhere pets and little ones simply cannot reach.
Like many irritating houseplants, the rubber plant's bite comes from calcium oxalate crystals.
Those crystals are exactly what makes philodendron and dieffenbachia sap sting, but a rubber plant plays by other rules. What irritates here is the milky latex itself, plus the enzyme ficin and the psoralen ficusin, with no oxalate crystals involved at all.
Rubber plants need bright direct sunlight.
Strong sun, especially the hot rays of afternoon, will scorch those handsome leaves. What it really wants is bright indirect light or a little shade, and happily it copes with dimmer corners better than most houseplants do.