Start with Evergreen Bones

In a small garden, every plant has to earn its place. The most reliable way to achieve year-round interest is to begin with evergreen structure — the shrubs and foliage plants that hold the plot together when everything else has died back. Without them, a compact garden can look bare and bleak from November to March, no matter how generous it was in July.

Choose a few compact, long-lived evergreens and repeat them. Repetition is what makes a small space feel considered rather than random. Good options for a British plot include Pittosporum tenuifolium 'Tom Thumb' for deep purple foliage, dwarf Euonymus fortunei varieties, Skimmia japonica for shade and red winter buds, and Hebe 'Green Globe' for a neat dome of green. Add a clipped box or yew if you want a formal edge, or a small Pinus mugo if you prefer a more relaxed feel.

Aim for roughly a third of your planting to be evergreen. That gives you a backbone without turning the garden into a static green block.

Layer Bulbs Beneath the Surface

Bulbs are the secret weapon of the small garden. They take up almost no ground space, they return year after year, and they let you pack a huge amount of colour into a few square metres. The trick is to layer them at different depths so the same patch of soil works three times over.

• Deepest layer (15–20cm): tall daffodils such as 'Thalia' or 'Actaea', and alliums for late spring.
• Middle layer (10cm): tulips — 'Spring Green' and 'Ballerina' are dependable in UK conditions.
• Top layer (5cm): snowdrops, crocus, grape hyacinths and dwarf iris.

Plant them under herbaceous perennials so the emerging foliage hides the yellowing bulb leaves in May. A generous scatter of Galanthus along a border edge or beneath a deciduous shrub costs little and lifts the whole garden in January.

Perennials That Work Hard

In a compact plot, choose perennials that give more than one season of value — interesting foliage, seedheads, or an unusually long flowering period. Avoid anything that looks tired by July.

• Hellebores for flowers from January to March and handsome evergreen leaves.
• Hardy geraniums such as 'Rozanne' for months of colour and weed-suppressing foliage.
• Verbena bonariensis for airy height that never blocks the view.
• Japanese anemones for late summer and autumn, when many borders fade.
• Sedum (Hylotelephium) for pink autumn flowers that hold their shape into winter.

Plant in generous drifts of three, five or seven rather than ones and twos. Odd numbers settle the eye and make a small border look fuller than it really is.

Autumn and Winter: The Season Most Small Gardens Forget

Once the summer flowers fade, structure and detail carry the garden. Think bark, berries, stems and scent.

• Cornus sanguinea 'Midwinter Fire' for glowing winter stems.
• Sarcococca confusa for glossy leaves and powerful winter perfume near a path or door.
• Callicarpa bodinieri for violet berries in autumn.
• Ornamental grasses such as Stipa tenuissima and Miscanthus sinensis, left standing over winter to catch the low light.
• Birch or Acer griseum for peeling bark that shines on a dull day.

Leave seedheads on Echinacea, Phlomis and teasel through the winter — they look superb rimed with frost and feed the birds.

Use Vertical Space and a Few Well-Chosen Pots

When the ground is limited, look up. A climber on a wall or fence adds months of interest without taking up any border. Clematis cirrhosa flowers in winter, Jasminum officinale scents the summer, and Parthenocissus brings fiery autumn colour.

Pots are especially valuable in a small garden because you can move them to wherever the planting looks thin — a group by the door with hellebores, cyclamen and ivy will carry you through to spring. Use the largest pots you can afford; small ones dry out too fast and restrict roots.

Keep the Planting Airy, Not Crammed

The biggest mistake in a small garden is overplanting. Crowded borders hide each other, encourage disease and look chaotic by midsummer. Better to plant generously in layers and leave some breathing room.

A simple rule: about half your visible ground should be covered in plants, a quarter in mulch or gravel, and a quarter in paths or seating. That balance keeps the space feeling open while still giving you plenty of colour. Mulch with bark or gravel each spring to suppress weeds and set off the foliage.

Finally, edit as you go. If a plant is not pulling its weight by its third year, dig it out and try something else. A small garden rewards ruthlessness — and with layered bulbs, reliable perennials and a spine of evergreens, you will have something worth looking at in every month of the year.