Start with the Soil, Not the Plants

A cottage garden border that looks after itself begins underground. Before you buy a single plant, spend a weekend improving the soil across the whole bed. Fork it over to a spade's depth, pull out the worst of the perennial weeds — couch grass, ground elder and bindweed will undermine everything you do later — and work in a generous barrowload of well-rotted manure or garden compost per square metre. If your soil is heavy clay, add grit as well; if it is thin and chalky, compost is your best friend.

Then mulch. A layer of bark chippings, leaf mould or composted bark 5–7cm deep, spread across the bare soil and kept clear of stems and crowns, does three jobs at once: it smothers weed seedlings, it holds moisture in the ground through a dry July, and it feeds the soil life that keeps plants healthy. Topped up each spring, a good mulch is the single biggest labour-saver in the garden. Do this once, properly, and you will spend far less time watering and weeding for years.

Build the Border on Evergreen Bones

Low-maintenance borders need structure. Evergreen shrubs give the bed a frame that holds through winter, so you are never left with a brown, empty patch in February. Choose compact, long-lived types that tolerate a bit of neglect and need clipping lightly, if at all.

• Rosemary and lavender — aromatic, drought-proof once established, and beloved by bees.
• Skimmia — neat, glossy, happy in shade and carrying red buds right through winter.
• Choisya ternata — scented white flowers in late spring and handsome evergreen leaves.
• Hebe — compact varieties flower for months and ask for nothing but sun.
• Sarcococca — for a shady corner, with winter scent worth waiting for.

Space them generously — a metre apart for most — because a border crammed in year one becomes a thug's playground by year three.

Hardy Perennials That Earn Their Keep

Perennials are the workhorses of the border. The trick is picking plants that clump up steadily, flower over a long stretch and do not need staking, dividing every other year, or endless deadheading.

• Hardy geraniums — 'Rozanne' is the classic, flowering from June to autumn with almost no help.
• Alchemilla mollis — frothy lime-green, self-seeds politely, superb at the front of a border.
• Nepeta — soft grey mounds of blue that spill over paths and shrug off drought.
• Achillea and Echinacea — flat, daisy-like heads that stand up to wind and feed the pollinators.
• Salvia nemorosa — deep purple spikes; cut back after the first flush for a second showing.

Plant in groups of three or five for impact, and leave the seedheads standing over winter — they look beautiful frosted and the birds will thank you.

Self-Seeding Annuals for Relaxed Colour

This is where the cottage garden gets its romance. Let a few annuals sow themselves and they will return year after year without you lifting a finger.

• Calendula — bright orange and yellow, tough as old boots.
• Nigella — delicate blue flowers followed by handsome seedpods.
• Cornflower (Centaurea cyanus) — true blue and brilliant for cutting.
• Poppies — scatter seed in autumn or early spring and let them find their own places.
• Foxgloves and aquilegias — technically biennial or short-lived, but they seed about so freely they behave like permanent residents.

Leave the seedheads to ripen and drop, and resist the urge to tidy in autumn. A light shake over bare soil in September is all the planting these will ever need.

Plant for Drought and Water Less

Choose plants that come from hot, dry places and you will water far less. Silver and grey foliage, small leaves and deep taproots are all clues that a plant is built for drought.

• Lavender, rosemary, thyme and sage — the Mediterranean herbs, all happy in poor, free-draining soil.
• Sedum and sempervivum — fleshy leaves that store water for weeks.
• Eryngium and Verbena bonariensis — airy, see-through plants for the middle of the border.
• Gaura and Stachys byzantina — both love a hot, sunny spot and will not sulk in it.

Group thirsty plants together in one damp corner rather than scattering them through the bed, and water deeply but rarely — a thorough soak once a week encourages roots to go down. Watering little and often trains shallow, fragile roots that will need you forever.

The Gentle Seasonal Round

Maintenance in a low-maintenance border is about timing, not effort. A light touch at the right moment saves hours later.

• Spring: top up the mulch, cut back any winter damage, sow annuals where you want them.
• Early summer: give some perennials a Chelsea chop — cutting them back by a third in late May — to keep plants bushy and spread the flowering season.
• Late summer: deadhead if you like, but leave plenty of seed for the birds and next year's seedlings.
• Autumn: plant new shrubs and perennials while the soil is still warm, and leave the debris in place for overwintering insects.
• Winter: do almost nothing. That is the whole point.

Get the soil right, mulch it well and let the self-seeders do half the work, and your cottage border will grow more generous — and more independent — with every passing year.