There is something quietly hopeful about planting bulbs on a damp October afternoon. The garden is winding down, the leaves are coming off the ash trees, and yet you are out there tucking next spring into the soil. Get it right now and you will be rewarded with months of colour — snowdrops in January, crocuses in February, daffodils through March and tulips right into May. Get it wrong, or leave it too late, and you will spend spring wondering why the display never arrived.

Why Autumn Is the Right Moment

Spring-flowering bulbs need a period of cold to trigger flowering, and they need time to grow roots before the ground freezes. The window is roughly September to November, and the first hard frost is a useful deadline to work towards.

• Daffodils and narcissi: plant from early September to late October. They root quickly and resent being moved late.
• Crocuses, snowdrops and muscari: September to November. Crocuses in particular like to go in early, as they flower from February.
• Tulips: late October through November, even into early December in a mild year. Leaving them until the soil has cooled reduces the risk of tulip fire, a fungal problem that thrives in warm, damp autumn soil.

If you buy bulbs and cannot plant them straight away, keep them in a cool, dark, dry place with good airflow. A paper bag or a slatted crate in the shed is ideal. Never leave them sweating in a plastic bag.

Choosing Bulbs for a Rural Garden

Out in the countryside, you are feeding more than your own family. Rabbits, deer, squirrels and mice all have opinions about bulbs, and it pays to choose accordingly.

• Reliably left alone: daffodils, snowdrops, alliums, fritillaries, camassia and bluebells.
• Usually eaten: tulips, crocuses and grape hyacinths, particularly by squirrels and mice.

Tulips still grow well in a rural garden, but plant them where you can protect them. A layer of chicken wire laid just below the surface, or a scattering of sharp grit, deters digging. In containers, a sheet of mesh over the compost works wonders.

Buy firm, heavy bulbs with papery skins and no sign of mould or softness. Size matters: a top-grade daffodil bulb will give you a much stronger flower than a bargain bin specimen. Species tulips, such as Tulipa tarda and Tulipa sprengeri, are shorter and far more weatherproof than the tall, flamboyant varieties, which is worth remembering if your land is exposed to wind.

Pick the Right Spot and Sort the Soil

Almost all spring bulbs want the same two things: sun and drainage. A site in full sun for at least six hours a day will give you stocky, sturdy plants and flowers that open properly. Under dense evergreen shade you will get leaves and little else.

Drainage is the part most gardeners get wrong. Bulbs rot in waterlogged ground, and heavy clay is their enemy. If your soil is sticky, fork in plenty of well-rotted compost and a good handful of horticultural grit per square metre. For particularly bad patches, plant each bulb on a small cushion of grit or sharp sand so water drains away from the base.

If the ground is frozen or unworkable, containers are a perfectly good alternative. Use a loam-based compost mixed with grit, and make sure the pot has drainage holes and stands on feet rather than sitting flat on a paving slab.

How Deep and How Far Apart

The old rule of thumb is simple and reliable: plant at three times the bulb's own height of soil above the tip.

• Crocus: 7–8cm deep, 7cm apart.
• Daffodil: 15cm deep, 10–15cm apart.
• Tulip: 15–20cm deep, 10–15cm apart.
• Snowdrop: 8–10cm deep, 8cm apart.

Plant in groups rather than straight lines — a crowded drift always looks better than a row. A decent guide is 30 to 50 bulbs per square metre for a bold display, or 15 to 20 for a naturalised look in grass. Drop a handful of general-purpose bulb fertiliser into the planting hole and work it into the soil at the base, never directly against the bulb.

Lawns, Borders and Layered Pots

Naturalising in grass works beautifully with daffodils and crocuses. Lift a flap of turf with a spade, loosen the soil beneath, set the bulbs in place and press the turf back down. The key is to resist mowing for at least six weeks after flowering, so the leaves can feed the bulb for next year.

In containers, try layering. Put tulips deepest, then daffodils, then crocuses on top, each in its own thin layer of compost. All three will come through in succession from the same pot. Water them once after planting and then leave them to the weather.

Between Now and Spring

Once planted, bulbs need very little. Water them in if the autumn is dry. Mark the spot with a label or a few short canes so you do not fork through them while tidying borders in February. If squirrels are a nuisance, a sheet of wire netting pegged over the bed until the shoots appear solves the problem.

The shoots will come through in late winter, and that is when a light feed of high-potash fertiliser helps. Above all, leave the foliage alone after flowering. It looks scruffy for a few weeks, but those leaves are the bulb's only chance to store energy for the following year. Tie them back, hide them behind later perennials, or plant among hardy geraniums — but do not cut them down.

Do the work now, while the soil is still warm and the days are still mild, and spring will take care of the rest.