Avocado

Sun

Full sun in a sheltered position; protect young trees from intense afternoon sun in very hot climates and from drying winds.

Water

Water deeply when the upper soil starts to dry, then allow excess water to drain. Keep young trees evenly moist, but never leave roots standing in water.

Soil

Deep, well-drained soil, preferably slightly acidic to neutral. Avoid waterlogged clay, saline soil and sites with a high water table.

Height

20-60 ft (6-18 m); grafted garden trees can often be maintained at 10-15 ft (3-4.5 m)

Spread

15-35 ft (4.5-10.7 m)

Flowers

Small yellow-green flowers in branching clusters, usually in late winter or spring; timing varies with cultivar and climate.

Foliage

Evergreen. Leathery, oval to elongated dark green leaves; new growth may be bronze or reddish. Some older leaves drop around flowering.

Growth

Moderate to fast in warm conditions with adequate moisture.

Care needed

Medium

• Pollinators
• Heat tolerant
• Edible

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Hard

Toughness

Needs looking after

Pick your zone, country, light and whether you have pets.

1. Planting day

   7 ft (2 m)

2. After 1 year

   9 ft (2.6 m)

3. After 2 years

   11 ft (3.3 m)

4. After 3 years

   13 ft (3.9 m)

5. After 5 years

   17 ft (5.1 m)

About 16 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Mildly toxic: may upset a stomach

Growth rate

Fast

• Plant with the root flare at soil level; use a broad raised mound if drainage is marginal.
• Spread 3-4 in (7.5-10 cm) of coarse organic mulch beneath the canopy, keeping it clear of the trunk.
• Feed lightly with a citrus-and-avocado fertilizer during active growth, following the label; avoid heavy feeding of newly planted trees.
• Protect young trees from frost with horticultural fleece, and move container plants under cover before cold weather.
• Keep lawn and digging away from the shallow root zone, and protect newly exposed branches from sunburn.
• For better fruit set, consider a locally suitable cultivar of the opposite flowering type; one tree can still crop on its own.

Pruning. Prune lightly after harvest or once frost risk has passed, removing dead wood and shortening selected upright shoots to control height. Avoid severe canopy removal, which exposes bark to sunburn and can reduce cropping.

Pick full-sized avocados during your variety’s local harvest season, clipping them off with a short stalk; they remain firm on the tree and soften after picking. Test one first: if it softens evenly within 1–2 weeks without shrivelling, pick more, as size and skin colour alone cannot confirm maturity.

Late winter

Check frost protection and shelter from cold winds; postpone pruning while damaging frost remains possible.

Spring

Plant grafted trees once the soil has warmed and frost risk has passed.

Spring

Begin light feeding as growth starts, and refresh mulch without burying the trunk.

Summer

Check soil moisture frequently during heat and fruit development; water deeply without saturating the root zone.

Autumn

Move container trees into bright, frost-free shelter before nights become cold.

Winter

Reduce watering for sheltered container trees, but do not let the root ball dry out completely.

• Use as a fruiting canopy tree in a spacious, frost-free edible garden.
• Place in a sheltered courtyard where its broad leaves provide screening, allowing room for the mature crown.
• Include in a warm-climate food forest with low plants positioned beyond the immediate root and watering basin.
• Grow a compact grafted selection in a large, movable container where winter shelter is available.

Garden styles it suits: Edible landscape, Backyard orchard, Food forest, Modern tropical, Mediterranean and Homestead.

Plant it with: Nasturtiums, Calendula and Pineapple guava.

Wildlife: Flowers provide nectar and pollen for bees and other insects. Avoid insecticide use during flowering; fallen fruit can attract rodents.

• Phytophthora root rot: suspect it when foliage becomes sparse and pale and fine roots die. Improve drainage, avoid overwatering and seek local advice on resistant rootstocks and registered treatments.
• Salt injury: brown leaf tips and margins can follow saline irrigation water or excess fertilizer. Reduce feeding, test water and soil, and leach accumulated salts only where drainage is good.
• Mites: stippled or bronzed leaves, sometimes with webbing, can weaken trees. Reduce dust and water stress, conserve predatory mites and use a locally approved treatment if damage is severe.
• Poor fruit set: cold weather, unsuitable cultivars and weak pollination can limit crops. Choose locally proven grafted cultivars, protect visiting pollinators and consider a complementary flowering type.

Leaves, bark, fruit skin and pits contain persin. Horses are highly susceptible, and ingestion can cause serious or fatal illness; keep trees and prunings away from paddocks. Dogs and cats may develop digestive upset after eating plant material, while pits also present choking and intestinal-blockage hazards. Ripe flesh is edible for people, although avocado can trigger allergies; do not treat the leaves, skin or pits as ordinary food.

• Bay laurel (Laurus nobilis)

  Bay usually has smaller, narrower leaves with distinctly wavy margins and a strong culinary bay scent when crushed; its fruits are small black berries rather than large avocados.

• Mango (Mangifera indica)

  Mango leaves are generally longer and narrower, with many conspicuous, closely spaced side veins; its fruit contains a large flattened stone.

Avocado comes through Spanish aguacate from the Nahuatl word ahuacatl, while americana means 'of the Americas'.

Propagation. Commercial and garden fruiting trees are usually grafted onto seedling or clonal rootstocks. Seeds germinate readily but do not reproduce the parent cultivar and may take many years to fruit, with uncertain quality.

Accepted botanical name

Persea americana

In the US and Canada

Introduced in Hawaii, the lower 48 states, Pacific Basin, Puerto Rico and US Virgin Islands.

Native range

Belize, Costa Rica, Guatemala, Honduras, Mexico Central, Mexico Gulf, Mexico Southeast, Mexico Southwest and Nicaragua.

Measured

Average height 910 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.