Reading the Hedgerow Calendar

There is a particular pleasure in walking home with purple fingers and a bag of fruit that cost nothing but an hour of attention. The British hedgerow is a generous larder, but it keeps a strict timetable. Blackberries begin to darken from late July, hitting their peak through August and into September, with the sweetest pickings coming after a few warm days. Elderberries follow close behind, hanging in heavy umbels from late August to early October; pick them when the whole cluster is black, not a mixture of green and black.

Sloes arrive later. The blackthorn’s fruit is ready from October, and while folklore insists you wait for the first frost, a night or two in the freezer does the same job of softening the skins. Crab apples, damsons, rosehips and rowan berries fill out the rest of the autumn. Learn the sequence and you can eat from the hedgerow from summer right through to the first hard frost.

Identify with Confidence

Never eat anything from a hedgerow unless you are completely certain what it is. Use two reliable sources — a good field guide and someone experienced — and check the whole plant, not just the fruit. Look at the leaves, the stems, the bark, whether there are thorns, and how the fruit attaches.

• Sloes grow on blackthorn, a spiny shrub with small oval leaves and harsh, upright stems. The fruit is a small, round, blue-black plum with a dusty bloom and a single stone inside.
• Elderberries hang in flat-topped clusters on a woody shrub with pinnate leaves and corky, fissured bark. The berries are tiny, glossy and black on reddish stalks.
• Blackberries are an aggregate fruit, made of many little segments, on bramble plants with prickles and white or pink flowers still present alongside the fruit.

Watch out for the dangerous lookalikes. Woody nightshade carries bright red berries on trailing stems with purple, star-shaped flowers. Deadly nightshade has shiny black single berries tucked among green leaves, never in hanging clusters. Black bryony twists through hedges with heart-shaped leaves and clusters of red berries. If in doubt, leave it. No crumble is worth an afternoon in A&E.

Pick Clean: Roadsides and Good Practice

Avoid hedgerows beside busy roads. Exhaust fumes, tyre particles and heavy metal deposits settle on leaves and fruit, and you cannot rinse them off entirely. Steer clear of verges that look sprayed or flailed, and don’t pick near field margins where crops have been treated. Fruit below dog height on a popular footpath is best left alone.

In England and Wales, picking the fruit, flowers and foliage of most wild plants for personal use is permitted, but uprooting plants without the landowner’s permission is not, and nature reserves set their own rules. Ask before picking on private land or common land with bylaws. Leave plenty behind for birds and for next year’s crop.

Blackberries: Jam, Crumble and a Sharp Little Sauce

Blackberries are low in pectin, so they need help to set. For jam, use 1kg of berries to 750g of preserving sugar, adding the juice of a lemon and a couple of grated cooking apples for pectin. Simmer gently until the fruit collapses, then boil hard until it reaches setting point — about 105°C, or when a spoonful on a cold saucer wrinkles as you push it. Sieve half the pulp if you dislike pips.

For a crumble, tumble 700g of berries into a dish with 60g of sugar and a squeeze of lemon, then top with 200g plain flour rubbed into 100g cold butter and 75g sugar. Bake at 190°C for 35 minutes until bubbling at the edges. A quick sauce for duck or venison: simmer 300g berries with two tablespoons of sugar and a splash of red wine vinegar until thick, then push through a sieve.

Sloes and Elderberries: Gin, Jelly and Cordial

Sloes are mouth-puckeringly astringent raw, so cook them or steep them. Sloe gin is the classic: fill a sterilised jar with 500g of pricked sloes, add 250g of sugar and a litre of gin, shake daily for a week, then weekly for three months before straining. Sloe jelly needs a firm hand with pectin — cook the fruit with chopped apples and lemon, strain overnight through muslin, then boil the juice with 450g sugar per 600ml.

Elderberries must always be cooked; raw berries can cause nausea. Strip them from the stalks with a fork and discard any green ones. For cordial, simmer 1kg berries with a litre of water, a sliced lemon, a few cloves and a thumb of ginger for 30 minutes, mash, strain, then add 500g sugar per 600ml of liquid and simmer until dissolved. Bottle hot into sterilised bottles. It keeps for months and lifts a winter cold no end. Elderberry jelly follows the same route as sloe jelly.

Practical Kitchen Notes

• Sterilise jars in a 140°C oven for 15 minutes, or run them through a hot dishwasher cycle, and fill while still warm.
• Freeze berries in a single layer on a tray before bagging, so they don’t clump together.
• Hedgerow fruit varies wildly in sweetness — taste before you commit to a sugar quantity.
• Use stainless steel or enamel pans for acidic fruit, and a wide heavy pan for jam so it reduces quickly.
• Soak blackberries briefly in salted water if you want to dislodge any small larvae, then rinse and drain well.
• Label every jar with the date and where you picked, so you learn which hedges are worth returning to.