Olive Tree is the Mediterranean statement plant: a small tree with a gnarled, silvery-grey trunk and narrow, silvery-green leaves that shimmer in the sun. Indoors it brings a calm, sculptural, sun-baked feel that no tropical foliage plant can match, and it looks best in a simple terracotta pot in the brightest spot in the house.
It is a slow-growing tree that wants sun, fresh air and a dryish regime — almost the opposite of a tropical houseplant. It can live for many years indoors if it gets enough light, and it does best if it can spend the summer outdoors in a sunny spot. Light and overwatering are the two things that kill indoor olive trees. It needs direct sun, and it rots fast in wet soil — most indoor olives die from too much water in too dim a spot, not from neglect. This guide covers exactly what it needs: light, watering, humidity, temperature, soil, repotting, feeding, propagation and the common problems that show up when something is off.
Olive Tree at a glance
| Care factor | What this plant needs |
|---|---|
| Botanical name | Olea europaea |
| Light | bright direct |
| Water | every 2–3 weeks; let soil dry |
| Humidity | low |
| Temperature | 60–80°F (16–27°C) |
| Repotting | every 2–3 years |
| Pet safety | non-toxic to cats and dogs |
Light
Give your Olive Tree bright direct. Give it bright direct light — the brightest, sunniest window you have, ideally south-facing with several hours of direct sun a day. In too little light it drops leaves, grows leggy, and slowly declines. If you can, move it outdoors to a sunny spot for the summer and bring it back in before the first frosts — the fresh air and sun do it a world of good. Our grow-light calculator can help work out whether your spot is bright enough, and our sunlight calculator can help you check how much light a window really gets through the day.
Watering
Water as follows: every 2–3 weeks; let soil dry. Water every 2–3 weeks and let the soil dry between waterings. Water thoroughly until it runs from the drainage holes, then empty the saucer and do not water again until the soil is dry well below the surface. Olive trees are drought-tolerant and rot fast in wet soil — underwatering is far safer than overwatering with this plant. Our watering calculator gives a starting point for your pot size, and the watering schedule generator can help you build a routine around it.
Humidity and temperature
Olive Tree needs low humidity and temperatures of 60–80°F (16–27°C). Olive Tree likes low humidity, which makes it one of the easiest plants in this guide for dry homes — it does not need a humidifier, grouping, or misting. In fact, damp, still air encourages leaf problems, so give it fresh air and good ventilation rather than humidity. Keep it out of steamy rooms. Our humidity and temperature checker can tell you whether your room suits this plant. Temperature matters just as much as humidity: keep it away from cold windows in winter, from radiators that dry the air, and from air-conditioning vents that blast cold air directly at it.
Soil and potting
Indoors, this plant needs a rich but very free-draining potting mix. A very free-draining, gritty mix suits it: potting soil with plenty of perlite or grit, so water runs through quickly and the roots never sit wet. A terracotta pot helps, since it dries out faster than plastic, and drainage holes are essential. Our potting-mix calculator can work out the parts for your pot size. Our potting-mix calculator can work out the parts for a homemade mix for your pot size, and our soil volume calculator can work out how much mix you will need.
Repotting
Repot every 2–3 years, in spring, or sooner if roots are circling the drainage holes. Repot every 2–3 years in spring, moving up only one pot size. Olive trees grow slowly, so check the roots rather than repotting on a schedule, and do not give it a huge pot — a pot that is too big holds wet soil the roots cannot use. Prune lightly in spring to keep the shape, removing dead or crossing branches. 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 at half the strength on the label, roughly once a month while the plant is actively growing. Feed lightly in spring and summer with a balanced liquid fertiliser at half strength, about once a month while it is actively growing. Olive trees are light feeders, and excess fertiliser encourages soft, leggy growth that is more prone to problems. Do not feed in autumn and winter. Our fertiliser calculator can help you work out the right amount for your pot size. Always follow the directions on the label — more fertiliser is not better, and excess salts build up in the soil and burn the roots.
Propagation
Olive Tree is rarely propagated at home — it is slow and unreliable from cuttings indoors, and most indoor olives are bought as young trees from a nursery. Semi-hardwood cuttings taken in summer can root with warmth and patience, but they take a long time and often fail, so for most growers the practical answer is to buy a healthy young tree and focus on keeping it alive. If you do try cuttings, take them in summer, keep them warm and barely moist, and expect to wait months.
Common problems and fixes
| Problem | Likely cause | Fix |
|---|---|---|
| Yellow leaves | overwatering | Let the soil dry a little more between waterings; check drainage and remove yellow leaves. |
| Brown leaf tips | low humidity | Raise humidity; flush salts from the soil and trim brown tips. |
| Slow growth | too little light or pot-bound | Check light and whether the plant is pot-bound; repot in spring if needed. |
Yellow leaves
Likely cause: overwatering. Yellow leaves are the plant's earliest complaint, and they usually point at the roots rather than the leaves themselves. Check the soil before you do anything else: if it is wet deep down several days after watering, the roots are sitting too wet and the plant is telling you to water less and check drainage. Remove leaves only once they are fully yellow, since a half-yellow leaf is still feeding the plant, and if several leaves yellow at once, lift the plant and look at the roots — soft, dark, mushy roots mean rot, and you should cut the damaged roots away and repot in fresh, dry mix.
Brown leaf tips
Likely cause: low humidity. Brown leaf tips usually mean the air is too dry, or that salts are building up in the soil from tap water or fertiliser. Check your humidity first, and if the tips keep browning even in moist air, try watering with rainwater or water left out overnight, and flush the soil with plain water occasionally to wash salts out. Trim the brown tips with clean scissors, following the shape of the leaf, and avoid cutting into green tissue. New growth should stay clean once the cause is fixed.
Slow growth
Likely cause: too little light or pot-bound. Slow growth is usually a light or pot problem rather than a disease. First check the light: this plant needs the light level in the table above, and in a dim spot it will barely grow at all. Then check the pot — if roots are circling the drainage holes or pushing out of the top, the plant is pot-bound and needs repotting in spring. A plant that is warm, bright and in fresh mix should put on steady growth through spring and summer; almost no houseplant grows fast in the dark of winter, so judge growth in the growing season.
Frequently asked questions
How often should I water Olive Tree?
every 2–3 weeks; let soil dry. Water every 2–3 weeks and let the soil dry between waterings. Check the soil with your finger before you water — the surface can look dry while the soil below is still wet, and the plant's needs change with the season, the pot size and the light.
How much light does Olive Tree need?
It needs bright direct. Give it bright direct light — the brightest, sunniest window you have, ideally south-facing with several hours of direct sun a day. Too little light gives stretched, pale growth, and harsh direct sun — where it is not wanted — scorches the leaves.
Is Olive Tree safe for cats and dogs?
According to the data used for this guide, this plant is non-toxic to cats and dogs. That does not mean pets should eat it — any plant can upset a stomach — but it is one of the safer choices for a home with pets that chew plants.
Can I keep an Olive Tree indoors all year?
Yes, if it gets enough light — a south-facing window with several hours of direct sun. It does even better if it can spend the summer outdoors in a sunny spot and come back inside before the frosts. The most common reason indoor olives fail is too little light combined with too much water.
What should I do if my Olive Tree looks unhappy?
Start with the basics: check the soil moisture, the light, and the temperature, and look at the problems table above. Most unhappy houseplants are unhappy about water, light or cold, not about a rare disease — fix the care first, give the plant a few weeks, and judge it by the new growth, not by the damaged leaves, which will not heal.