Avocado (Persea americana) care

Herbs & edibles · straightforward to keep

Last updated 26 October 2026

Avocado (Persea americana) wants bright light with several hours of direct sun. Water it every 6 days. Water thoroughly when the top few centimetres are dry, and empty the saucer. Pot it in free-draining, loam-based compost. A balanced feed monthly in spring and summer, and repot once a year. Humidity: above 50%; the leaf tips brown in dry air. Toxic to cats and dogs, and more seriously to pet birds: the leaves, stone and skin contain persin, which causes vomiting and diarrhoea.

The avocado, as most people grow it: from a stone, sprouted in a glass of water. It makes a fast, leafy tree indoors but almost never fruits there. Its leaves, stone and skin are toxic to pets — and particularly to birds.

Quick facts

Water: Water every 6 days. Water thoroughly when the top few centimetres are dry, and empty the saucer.
Light: Bright light with several hours of direct sun.
Humidity: Above 50%; the leaf tips brown in dry air.
Soil: Free-draining, loam-based compost.
Feeding: A balanced feed monthly in spring and summer.
Repotting: Repot once a year.
Toxic to pets: Toxic to cats and dogs, and more seriously to pet birds: the leaves, stone and skin contain persin, which causes vomiting and diarrhoea. Keep birds well away from it. The ASPCA's plant list does not include Persea americana (checked 26 October 2026).
Difficulty: Straightforward.
Mature size: 1–2 m indoors, if pruned.
Native to: Mexico and Central America.

Watering an Avocado

Water every 6 days. Water thoroughly when the top few centimetres are dry, and empty the saucer.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Bright light and as much direct sun as you can give it. An avocado grown from a stone stretches into a tall, bare single stem in anything less.

Humidity and temperature

Above 50%; the leaf tips brown in dry air. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

A loam-based compost with grit or perlite. Avocados want moisture but are very prone to root rot in a wet, airless mix.

Feeding

A balanced feed monthly in spring and summer. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot once a year. Every spring while it is young, one size up.

Common problems

Brown, crispy leaf tips
Salts from tap water and fertiliser, or dry air.

Fix: Flush the pot through with rainwater every few months and raise the humidity.

Brown tips and edges: how to read it on any plant
One tall stem with few leaves
Too little light, and no pruning.

Fix: Pinch out the top when it reaches about 30 cm, and again later; it branches from below the cut.
Leaves drooping in a wet pot
Root rot.

Fix: Let it dry out further and make sure the pot drains; avocados drown easily.

Propagation

From the stone: suspend it pointed end up in water on three cocktail sticks, or plant it half-buried in compost. Roots and a shoot follow in four to eight weeks.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Toxic to cats and dogs, and more seriously to pet birds: the leaves, stone and skin contain persin, which causes vomiting and diarrhoea. Keep birds well away from it.

The ASPCA's plant list does not include Persea americana (checked 26 October 2026).

If your pet has eaten a plant, call your vet, the ASPCA Animal Poison Control Center on (888) 426-4435, or the Pet Poison Helpline on (855) 764-7661. Both are open around the clock and may charge a consultation fee. Take the plant or its label with you.

This is general information, not veterinary advice. We don't test plants: what we say about toxicity follows the ASPCA's published plant list as it stood on 26 October 2026, and that list can change. "Non-toxic" means not poisonous — a pet that eats enough of any plant can still vomit, and fertiliser, pesticide or leaf shine on a plant can harm it. It also only helps if the plant is what you think it is. It covers cats and dogs only; ask your vet about rabbits, birds, reptiles or anything else, and a doctor about children. Read our terms.

Every houseplant in the library the ASPCA lists as non-toxic to cats and dogs

Questions people ask

How often should you water an Avocado?

Water every 6 days as a starting point — that is the cadence PlantParlour sets for Persea americana. Water thoroughly when the top few centimetres are dry, and empty the saucer. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does an Avocado need?

Bright light and as much direct sun as you can give it. An avocado grown from a stone stretches into a tall, bare single stem in anything less.

Is Avocado toxic to cats and dogs?

Toxic to cats and dogs, and more seriously to pet birds: the leaves, stone and skin contain persin, which causes vomiting and diarrhoea. Keep birds well away from it. The ASPCA's plant list does not include Persea americana (checked 26 October 2026). If a pet has eaten part of a plant, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 straight away.

How do you propagate an Avocado?