Match the tree to the space, not the other way round

One of the quiet pleasures of a small British orchard is that it never has to be grand. A few trees along a garden boundary, three cordons against a south-facing wall, or half a dozen bushes in a paddock corner can give you more fruit than a family can reasonably eat, freeze, bottle and give away. But the planning matters more than it would in a commercial block, because you have no room to hide a poor choice.

The single most common mistake is choosing a variety purely on flavour, then discovering it grows into a spreading tree that swamps the vegetable patch, or that it flowers alone and sets almost nothing. Variety, rootstock, pollination and site all work together, and getting them right at planting time saves years of frustration.

Rootstock decides the size, not the variety

This surprises many new growers. A Bramley on a very dwarfing rootstock stays small; the same Bramley on a vigorous rootstock becomes a large standard. The variety gives you the fruit and the flavour, the rootstock gives you the scale. For a small orchard, the useful choices are:

• M27 – extremely dwarfing, best for containers, stepovers and tiny gardens. Needs rich soil and permanent staking.
• M9 – the standard choice for cordons, espaliers and small bushes. Crops early and heavily, but wants good soil and a stake for life.
• M26 – a sensible middle ground, roughly 2.5–3 metres at maturity, tolerating poorer ground better than M9.
• MM106 – for half standards, larger bushes and grassed orchards where trees must fend for themselves a little more.

Spacing follows from that. Cordons on M9 can sit 60–75cm apart along a wire; free-standing bushes want 2.5–3 metres between trunks, with room to walk and mow between the rows. Leave at least 3 metres clear of hedges and buildings, both for light and for air movement that dries the leaves and reduces disease.

Pollination: the detail most people overlook

Most apples are not self-fertile, so a lone tree in a garden frequently flowers beautifully and then drops every fruitlets. Varieties are grouped by flowering time, usually numbered 1 to 6. As a rule, choose two varieties in the same group, or in adjacent groups, and they will overlap enough to cross-pollinate. Nearby crab apples and ornamental malus in neighbouring gardens will also help.

Watch out for triploids such as Bramley's Seedling, Ribston Pippin and Jonagold. They produce little viable pollen of their own, so they cannot act as a partner for anything else. Plant a triploid and you will need two other varieties flowering at the same time, not one.

Choose for your climate and soil

Britain is generous to apples, but not uniformly so. A garden in the wet, mild west faces far more scab and canker pressure than one in the drier east. Northern sites have a shorter season, so late-ripening varieties may never reach good flavour before the frosts. Cold, frosty hollows can strip blossom in May when there is no other site available.

Think about what you actually want from the crop, too. Early eaters such as Discovery and George Cave are a delight in August but keep for barely a fortnight. Katy, James Grieve, Lord Lambourne and Charles Ross crop generously and are useful for both eating and cooking. For storing through winter, look to Egremont Russet, Ashmead's Kernel, Sunset, Fiesta and Annie Elizabeth. A small orchard works best with a spread of seasons rather than six trees that all ripen in the same week.

Disease resistance pays for itself

In a wet year, a susceptible variety on an exposed site can lose most of its foliage to scab and much of its crop with it. Choosing naturally resistant varieties is far kinder than committing to a spray programme in a garden.

• Good scab resistance: Ashmead's Kernel, Egremont Russet, Discovery (in drier districts), and many modern introductions bred specifically for low-input growing.
• Canker-prone in damp areas: Worcester Pearmain, Cox's Orange Pippin and many of its offspring.
• Worth including for cider or juice: Dabinett, Yarlington Mill and Kingston Black, which add tannin and depth to a blend and are tough, useful trees in their own right.

Good air drainage, open pruning and a weed-free ring around each trunk will do more for tree health than any bottle of tonic.

Planting well and the first few years

Bare-root trees planted between November and March establish best, provided the ground is not frozen or waterlogged. Soak the roots before planting, set the tree so the old soil mark sits level with the ground, and firm gently in stages. Stake dwarfing trees permanently, and fit a rabbit guard if you are anywhere near countryside.

Keep a metre-wide circle clear of grass and weeds for the first three years, mulch with well-rotted manure or compost, and water properly in dry spells during the first two summers. Remove flowers and young fruit in the first year and most of it in the second, so the tree puts its energy into roots and framework. Then stand back: a well-chosen, well-planted apple tree will crop for thirty years or more, and the varieties you pick now will quietly shape what your autumns taste like for decades.