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Avocado

Grown from a leftover stone on a sunny windowsill, avocado makes a striking, fast-growing houseplant. It's an act of patience rather than a food crop — in the UK it will not flower or fruit indoors, but the glossy foliage and novelty of growing your own tree from scratch make it a rewarding project.

Waiting this month
First sprouts in 4–8 weeks to sprout — often slower and less reliable from cold, refrigerated supermarket stones

Difficulty

Avocado

Out of season right now. The next sowing window opens in March.

Growing Calendar

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sow
Transplant
Harvest

This month: Jul

Plan ahead for this crop

  • Check growing conditions
  • Prepare for next stage

Sowing Guide

What you'd find on the seed packet

Sow Depth

2cm, pointed end up, blunt end down

Spacing

One stone per 12–15cm pot

Germination

4–8weeks to sprout — often slower and less reliable from cold, refrigerated supermarket stones

Thinning

Not applicable — grown as a single specimen

Grower's Note

Score or lightly nick the base and soak overnight to speed germination. Alternatively, suspend the stone half-submerged in water using three cocktail sticks until roots and a shoot appear, then pot into compost.

Planting Out Guide

Best spaces, conditions and how to plant out

Plant Spacing

One plant per pot, sized up as it grows

Best Grown In

A bright, south-facing windowsill; can stand outside in a sheltered, warm spot from June to August

Conditions

Full light, warmth above 15°C, protected from cold draughts. Free-draining, peat-free multipurpose compost.

Grower's Note

Pot on into a slightly larger container each spring as roots fill the pot. Bring back indoors well before the first frost if it has spent summer outside.

Growing Stages

Approximate weeks from sowing to harvest

Sprouting

6wks

Seeds germinate and first leaves emerge. Keep warm and moist.

Establishing

26wks

Root system develops and plant builds structure. Pot on if needed.

Maturing

104wks

Plant reaches full size and begins producing. Harvest at peak.

Total~136 weeksfrom seed to harvest

Climate Control

Today

C

Humidity

%

Water

Every 2–3 days

Sunlight

6+ hours direct sun

Watch Out For

Cold draughts and temperatures below 10°C will damage or kill the plant

never leave it in an unheated room over winter

Overwatering causes root rot and yellowing leaves

let the top few centimetres of compost dry out between waterings

Don't expect fruit

avocados grown from a shop-bought stone in the UK almost never flower or fruit; grow it for the foliage

What You'll Need

Equipment for growing avocado

Modular Seed Tray

96-cell for precision sowing

Fine Rose Watering Can

Gentle shower for seedlings

Bamboo Canes

Pack of 20 × 120cm

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Grown Organically

Every method in this guide works with natural systems — no synthetic chemicals, no shortcuts.

Read our approach

Common Questions

About growing Avocado in the UK

Will my avocado tree ever produce fruit?

Almost certainly not. Avocados grown from a supermarket stone in the UK are grown for their foliage, not fruit — they need years of growth, a specific variety, cross-pollination from a second tree, and a much warmer, frost-free climate to flower and fruit reliably. Treat it as a long-term houseplant, not a food crop.

Why won't my avocado stone sprout?

Refrigerated supermarket avocados often have stones that are already partly dead from cold storage, so a low success rate is normal — expect roughly one in three to sprout. Nicking the base lightly and soaking overnight before planting improves your odds.

My avocado plant is tall and leggy — what should I do?

Pinch out the growing tip once the main stem reaches about 15cm, and again after each new flush of 5–6 leaves. Left alone, avocados grow as a single tall cane; regular pinching forces side shoots and produces a fuller, sturdier plant.

Can I put my avocado plant outside in summer?

Yes — from June to August, once nights are reliably above 12°C, a sheltered, warm, partly shaded spot outdoors can boost growth. Acclimatise it gradually over a week and bring it back inside well before the first autumn frost.

Member guides

There's more to growing Avocado than this guide covers.

Seasonal reminders, deeper guides, and the small adjustments that change a harvest.

See what's included

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