Why Grow an Apple Tree?
An apple tree is one of the best long-term investments you can make in a garden. Once established, a well-chosen tree can produce fruit for decades with relatively modest maintenance. Whether you have a large plot or a modest back garden, there's an apple variety and rootstock to suit your space.
Choosing the Right Rootstock
Apple trees are grafted onto rootstocks that control their ultimate size and vigour. Choosing the right one is crucial:
| Rootstock | Tree Size | Best For |
|---|---|---|
| M27 | Very dwarf (1.2–1.8m) | Containers, small patios |
| M9 | Dwarf (2–2.5m) | Small gardens, cordons |
| M26 | Semi-dwarf (2.5–3.5m) | Average gardens |
| MM106 | Semi-vigorous (3.5–5m) | Larger gardens, espaliers |
| MM111 | Vigorous (5m+) | Orchards, poor soils |
Pollination: You May Need Two Trees
Most apple varieties are not self-fertile — they need pollen from another apple variety flowering at the same time. Apple varieties are grouped into pollination groups (1–7) based on flowering time. Choose two varieties from the same group, or neighbouring groups, to ensure reliable cross-pollination.
Some varieties like 'Bramley's Seedling' are triploid — they need two different pollinators nearby and cannot pollinate others themselves.
When and How to Plant
The best time to plant bare-root apple trees is during the dormant season, between November and March (avoiding frozen ground). Container-grown trees can be planted year-round, though autumn and spring are ideal.
- Dig a hole wide enough to spread the roots comfortably, but no deeper than the root system.
- Incorporate well-rotted compost into the backfill soil.
- Position the tree so the graft union (a slight kink near the base) sits above soil level.
- Firm the soil down gently and water well.
- Stake the tree for the first two or three years using a low stake and flexible tie to allow the trunk to develop strength.
How to Prune an Apple Tree
Pruning shapes the tree, removes dead or diseased wood, and encourages fruiting. The main pruning season for apple trees is winter (December to February) when the tree is fully dormant.
For Young Trees (Years 1–3)
Focus on building an open, balanced framework. Remove crossing branches, select 3–5 well-spaced main branches (scaffold branches), and shorten these by about a third each year to encourage branching.
For Established Trees
- Remove any dead, diseased, or damaged wood first.
- Cut out any branches that cross or rub against each other.
- Thin out congested areas in the canopy to let in light and air — this reduces disease and improves fruit quality.
- Shorten new sideshoots (laterals) back to 3–4 buds to encourage the formation of fruiting spurs.
Ongoing Care
- Mulching: Apply a ring of well-rotted compost or bark mulch around the base each spring, keeping it away from the trunk.
- Watering: Water newly planted trees regularly for the first season. Established trees rarely need watering except during prolonged drought.
- Thinning fruits: In early summer (the "June drop"), thin out clusters of developing fruits to one or two per cluster. This improves the size and flavour of the remaining apples.
Patience is part of growing apples — most trees take 3–5 years to produce a worthwhile crop, but the wait is entirely worth it.