Small Olive Tree Care | Keep Yours Thriving Indoors or Out

For the full breakdown, see our best Small Olive Tree guide.

Most olive tree problems start with too much water or too little light. These trees survive droughts and poor soil, but they rot in wet conditions and sulk in the shade. Get those two things right, and a small olive tree is one of the easier container plants you can grow — whether it lives on a sunny patio in California or a bright windowsill in Ohio.

The Basics: Light, Water, Soil, and Climate

Olive trees need at least 6 hours of direct sun daily. Indoors, that means a south- or west-facing window — a north-facing one simply won’t cut it and leads to weak, leggy growth.

Watering is where most people go wrong. Let the soil dry substantially between waterings — roughly until the top half of the potting mix has dried out. Olives are drought-tolerant by nature; keeping the roots wet invites root rot, the most common killer of potted olive trees. In a pot, drainage holes are non-negotiable.

Use a sandy, well-draining mix — heavy, water-retentive soil holds moisture around the roots for too long. For temperature, olives prefer the mild-winter, warm-summer pattern of USDA Hardiness Zones 8–11, which covers much of California, Arizona, Texas, and Florida. They tolerate typical indoor rooms around 60–85°F, as well as low humidity.

Where Olive Trees Grow Best in the US

The climate sweet spot for olives is Zones 8–11, with warm, dry summers and mild winters. University of Florida’s IFAS Extension says olives do best in a sunny, well-drained site and need protection when winter temperatures drop below 20°F. That freeze line is the hard limit — olives need roughly 200–300 chill hours (winter hours below about 45°F) to bloom, but exposure to temperatures much below 20°F can damage or kill the tree.

This means gardeners in cold-winter states should treat olives as container plants that move indoors or into a garage for the coldest weeks, rather than as permanent in-ground trees.

Planting, Repotting, and Feeding

Whether planting in the ground or a pot, the same principles apply: full sun, fast drainage, and no standing water.

• In-ground: Dig a hole about the same diameter as the root ball and slightly shallower, keeping the top of the root ball just above ground level. Garden Design’s guidance discourages adding compost to the hole — it holds too much moisture.
• In pots: Use a container with a drainage hole and a sandy, well-draining mix; a layer of gravel at the bottom helps. Water newly repotted trees more often at first, then cut back once roots establish.
• Fertilizer: Feed lightly during the growing season only. Epic Gardening advises not fertilizing from August to March — that late-season boost encourages tender growth that frost can kill.

If you’re ready to buy one, our roundup of the best small olive tree varieties covers which cultivars suit pots, patios, and cold snaps.

Common Mistakes and How to Avoid Them

Most small olive tree failures trace back to four fixable errors. Here’s what to watch for:

• Overwatering: The #1 killer. Let the soil dry substantially between waterings, and always use a pot with drainage holes.
• Too little light: Less than 6 hours of direct sun produces weak, sparse growth. Indoor trees need that south- or west-facing window.
• Cold exposure: Protect trees when temperatures approach 20°F — bring potted trees indoors or cover young in-ground trees during freezes.
• Poor drainage: Heavy soil or pots without holes trap water at the roots. Sandy, fast-draining mix is the fix.

One more placement note: fruiting olive trees drop olives that can stain patios and walkways. Garden Design advises planting them away from hardscape unless you choose a fruitless variety like ‘Little Ollie’, a recognized landscape selection listed by UC Master Gardeners.