Coffee Plant
Coffea Care Guide
Coffea arabica is a glossy-leaved evergreen shrub from the highland forests of Ethiopia. It is a quietly handsome houseplant in its own right, and a slow-burn novelty: keep one happy for a few years and it will flower and set the small green-then-red cherries that hold actual coffee beans. As houseplants go it is more forgiving than its reputation suggests, but it does have firm preferences about light and watering.
This guide covers the care that matters: light, watering, soil, feeding, and the conditions that get it to fruit. We grow it in the nursery and have shipped enough of them to know where most people go wrong.
Coffee Plant Care at a Glance
- Light: bright, indirect. Tolerates morning sun, scorches in midday sun.
- Water: keep evenly moist, never soggy. Let the top 2 cm dry between waterings.
- Substrate: rich but free-draining houseplant compost. Slightly acidic is ideal.
- Humidity: 50% or above. Most UK homes need a little help in winter.
- Feed: dilute balanced fertiliser fortnightly in spring and summer.
- Temperature: 18 to 24°C. Below 13°C the leaves drop quickly.
Light Requirements for Coffea Arabica
Coffee plants thrive with bright, indirect light. In the wild, they grow as understorey shrubs beneath a high canopy of taller trees, and that filtered, generous light is what they recreate well indoors. An east-facing window suits them perfectly. A south or west window works if you set them back 1 to 2 metres, or filter the light with a sheer curtain.
Signs of too much light: bleached patches, brown crisp edges, leaves curling or dropping after a hot afternoon.
Signs of too little light: dark green but slow to grow, long leggy stems with widely spaced leaves, and no flowering even on a mature plant.
In a UK winter, coffee plants benefit from being moved to the brightest spot you have. We would not put one in a north-facing room without an LED grow light running 10 to 12 hours a day.
How Often to Water a Coffee Plant
The rule: keep the substrate evenly moist. Water when the top 2 cm of compost feels dry to the touch, then water thoroughly until it runs out of the drainage holes. Empty any standing water from the saucer.
In summer this is usually every 4 to 7 days; in winter every 10 to 14 days. The exact timing depends on pot size, light and the warmth of your home. A coffee plant in a 17 cm pot in a warm conservatory will dry far faster than the same plant on a cool landing.
Signs of overwatering: yellowing lower leaves, soft brown leaf edges, mushy stem at soil level, and a sour smell from the pot. The most common cause of a dying coffee plant is wet feet over months rather than a single bad week.
Signs of underwatering: dramatic, sudden leaf droop and curled edges. Coffee plants are unusually theatrical here. They tend to recover within hours of a thorough watering, but repeated bone-dry episodes will cost you the lower leaves.
Tap water is fine in most parts of the UK. If you are in a hard water area and the leaves develop a pale, mottled look, a monthly flush with rainwater clears the build-up.
Soil and Potting Mix
Coffee plants do best in a rich, free-draining houseplant compost on the slightly acidic side. Standard peat-free houseplant compost works well; an ericaceous compost is not necessary, but if you have it, mixing one part of it with three parts of regular compost gives a slight acidity that the roots prefer.
Whatever base mix you use, add 20 to 30% perlite or fine bark to keep the structure open. We also add a scoop of Ecothrive Charge as a soil conditioner when potting up; it improves microbial life in the rootzone and pays off over the following months.
For an alternative substrate that takes the guesswork out of watering, Lechuza Pon works very well for Coffea once the plant is established. Aroid mixes are too chunky on their own; if that is all you have, mix one part with two parts of regular compost.
Repotting a Coffee Plant
Repot every 18 to 24 months in spring, just as new growth starts. Young plants put on a surprising amount of root and can go up a pot size every year for the first three years. Older specimens slow down and only need it every two to three years.
Go up one pot size only as too much fresh wet compost around a small root system is the fastest route to root rot.
If you want to keep your coffee plant at its current size, refresh the top 3 to 5 cm of substrate each spring instead of repotting and trim back about a third of the longest roots when you next pot up. Keeping it in the same pot keeps it compact.
Humidity and Temperature
Coffee plants are happier above 50% humidity. Most UK homes hit that easily in summer; winter heating drags humidity down to 30 to 40%, which is where you start to see brown leaf edges.
We do not recommend misting. It does not meaningfully change the humidity around the plant and can encourage fungal leaf spots, which Coffea is prone to. Better options:
- For beginners: group the coffee plant with other houseplants, sit it on a pebble tray, or place it in a kitchen or bathroom (with enough light).
- For intermediate growers: a room humidifier such as the VIVOSUN AeroStream H09 for a small plant area.
Keep temperatures between 18 and 24°C and well away from cold draughts and radiators. Below 13°C, expect leaves to drop within a week. A coffee plant left on a cold porch in January is rarely worth saving.
Feeding a Coffee Plant
Coffea is a moderate feeder. From April through September, feed every fortnight at half the recommended dose with a balanced liquid fertiliser. A 6-6-6 or 7-7-7 NPK works well. Skip feeding from late October through to March; coffee plants slow noticeably in low light and overfeeding in winter causes leaf drop and salt build-up.
If your plant is approaching the size where it might flower, switch to a slightly higher-potassium feed (something like a 4-5-7) in late spring. We use Hesi Supervit as a vitamin and amino acid supplement alongside our base feed for the older plants in the nursery.
Pruning and Shape
Left alone, an indoor coffee plant will keep extending its main stems upwards. Pinching out the growing tips on the longest shoots in spring encourages branching and a fuller, more shapely plant. You can also do a hard prune if it has got leggy: cut back to a healthy node, and within four to six weeks new growth will push from below the cut.
Healthy leaves can be wiped over with a damp cloth every few weeks to keep the glossy finish and improve light absorption. There is no need to use a leaf shine product.
Will It Flower and Fruit Indoors?
Yes, but only when the plant is mature and conditions are right. Most indoor coffee plants flower in their third or fourth year, with small white star-shaped flowers in late spring. The cherries that follow start green and ripen to deep red over six to nine months.
To get there, you need three things over a sustained period: bright indirect light (or supplementary grow lights), regular feeding through the growing season, and a mild winter rest. A plant that scrapes through a dim winter with patchy watering rarely has the reserves to put on flowers the following spring.
One thing worth knowing: a single indoor coffee plant produces a tiny crop. We are talking grams of green beans per plant, per year. It is satisfying as a project, but no one is brewing their morning espresso from a windowsill harvest.
Common Problems
Yellowing leaves
Usually overwatering or compacted, exhausted compost. If the lower leaves are yellowing one or two at a time it can be normal turnover; if you are losing several at once, slip the plant out, check the roots, and repot into fresh mix if any are black or mushy.
Brown leaf tips and edges
Low humidity, mineral build-up from tap water, or under-watering. Flush the substrate with rainwater once a quarter, ease back on feed, and check that you are not letting the pot dry out completely between waterings.
Sudden leaf drop
Coffee plants drop leaves dramatically in response to cold draughts, sudden temperature changes, and severe underwatering. Move the plant to a steadier position, water thoroughly, and trust the recovery. Provided the stems and roots are healthy, new leaves push within a few weeks.
Leaf curling or cupping
Light too strong, water too cold, or a sharp drop in humidity. Move out of direct sun, water with room-temperature water, and address the humidity if needed.
Pests
Coffea is most often hit by mealybugs, scale and spider mites. Inspect the undersides of leaves and the leaf joints once a fortnight. Treat early with neem oil as a leaf spray, and isolate the plant until you have stopped seeing fresh damage.
For the full process on each pest, see our mealybugs guide, scale guide, and spider mites guide.
Propagation
Coffee plants are slow but reliable from cuttings, and easy from fresh seed.
From cuttings
- Take a 10 to 15cm cutting from a semi-ripe stem in late spring or early summer. Make the cut just below a node.
- Strip the lower leaves and cut the largest remaining leaves in half across the width to reduce moisture loss.
- Pot into our Jungle Houseplant Mix
- Keep at 22 to 25°C in bright indirect light. Roots usually form in 8 to 12 weeks.
From seed
Coffee seed loses viability quickly. If you can source fresh, unroasted green beans (or harvest your own), soak them for 24 hours, then sow shallowly in a fine seed compost at 25 to 30°C. Germination takes four to eight weeks. Do not bother with supermarket roasted beans; they are dead.
A Final Note
A well-grown coffee plant is a quiet, glossy, slow-building presence in a room. Bright indirect light, regular but not heavy watering, and a feed through the warmer months are the bones of getting it right. If yours is dropping leaves and you cannot work out why, drop us a message; we have probably seen the same thing before.
