Oliver Radcliffe
Start with the Soil, Not the Shopping List
A cottage border is made in the ground, not in the garden centre. Before you buy a single plant, put the spade in and find out what you are working with. Most traditional cottage planting wants sun for at least six hours a day, so choose a south or west-facing stretch of wall, fence or hedge, and mark out a bed about 1.2 metres deep. That is deep enough for three rows of plants — tall at the back, middling in the middle, low at the front — but shallow enough that you can reach the back without treading on the soil.
If the border backs onto a wall, leave a 45cm gap so the wall does not starve the plants of rain. Strip any turf, then fork over the top 25cm. To check drainage, dig a 30cm hole, fill it with water and see how long it takes to vanish; anything under an hour is fine. Heavy clay will need a good bucketful of horticultural grit and well-rotted manure forked through, while thin sandy soil wants compost by the barrowload. There is no need for double digging. Let the bed settle for a fortnight before planting, and you will have a border that holds moisture and feeds roots for years.
Build a Backbone of Hardy Perennials
Perennials provide the structure that makes a border look established rather than scattered. Choose plants that flower for weeks on end and come back without fuss, and plant them in threes or fives rather than singly — repetition is what gives a cottage border its generosity.
- Tall, for the back: Helenium, Rudbeckia, Phlox paniculata, and Verbena bonariensis, whose wavering violet heads seem to hold the border up.
- Mid-height: Salvia nemorosa, Nepeta 'Six Hills Giant', Achillea 'Moonshine' and the wine-red Penstemon 'Garnet'.
- Front of border: hardy geraniums such as 'Rozanne' or Geranium psilostemon, Astrantia major, and the soft chartreuse froth of Alchemilla mollis.
Autumn planting is the kindest option: the soil is still warm, rain does the watering, and roots get a head start before winter. Space perennials 30–45cm apart and they will knit together by their third summer.
Let Self-Seeders Do the Filling
The magic of an old cottage border is that it never looks newly planted, and that is largely thanks to plants that sow themselves. Annuals such as nigella, calendula, cornflower and the common poppy, plus biennials like foxgloves, will wander wherever they fancy and fill every gap you leave them.
For self-seeding to work, there must be bare soil. Leave a patch or two unmulched between your perennials, and resist the urge to tidy every seedling away. Sow nigella and cornflower direct in March or September; they need no more than a rake and a watering can. In April, thin the seedlings to 20cm apart and move any strays to where they will be more welcome.
Be honest about the thugs. Alchemilla, aquilegia and bronze fennel will seed with enthusiasm. Keep them in check by pulling seedlings while they are small, and you will keep the charm without losing the border.
Herbs for Scent, Cooking and Pollinators
No cottage garden feels complete without herbs, and they earn their place three times over: fragrance underfoot, leaves for the kitchen and flowers for the bees.
- Lavender and rosemary: plant at the front edge where you brush past them, in the hottest, best-drained spot you have.
- Thyme and oregano: tuck into gravel along a path, where they will sprawl and scent the air.
- Chives: a clump near the kitchen door gives pink pompoms in May and constant snipping thereafter.
- Borage: scatter a few seeds and let the blue flowers feed the bees all summer.
Keep mint in a sunken pot or it will colonise the entire border within two seasons.
Planting Up and the First Season's Care
Water everything in well, then water thoroughly once a week through the first summer — a good soak is far better than a daily sprinkle. Mulch with 5cm of compost after planting, keeping it 10cm clear of stems. In late May, cut back early-flowering perennials by a third; this Chelsea chop delays their bloom and keeps them from flopping open in the middle. Stake with hazel pea sticks pushed in among the stems, which looks far more at home than canes and string. Deadhead through summer for more flowers, but stop in September and leave the seedheads standing.
A Gentle Year of Looking After It
Leave stems and seedheads standing right through winter. They feed the birds, shelter overwintering insects and catch the frost beautifully. Cut back in late February or early March, just as new growth stirs, then mulch and divide any clumps that have outgrown their space. By the third year the border will be seeding, spreading and shifting on its own, needing less from you each season — which is exactly how a cottage garden should behave.
