Why Dry Moorland Burns So Readily

Heather may look damp and springy underfoot after a wet winter, but a fortnight of sun and a steady breeze change everything. Heather and the grasses growing alongside it hold aromatic oils, and the layer of dead stems and leaf litter beneath the living plants dries to the texture of crumpled paper. On top of that sits peat — a soil built from partly rotted plant matter that holds carbon by the tonne. Once a fire reaches peat, it can smoulder underground for days or weeks, protected from rain and light winds, only to reappear as a new surface blaze a field's width away.

That is why upland fires spread faster and burn hotter than most people expect. A small flame in a tinder-dry heather stand can travel uphill quicker than you can jog, and the embers can jump tracks and streams. The habitat that burns is more than a backdrop to a good day out: it supports curlew, golden plover, merlin, mountain hare, bilberry and dozens of invertebrate species found almost nowhere else. Peat damaged by fire stops storing carbon and starts releasing it, and some scars take decades to green over again.

Leave the Stove, the Barbecue and the Campfire Behind

On a very high or exceptional fire risk day, the safest thing you can carry is no naked flame at all. Eat the sandwiches, drink the water you brought, and save the brew for the car park or the pub. Flames are obvious hazards, but heat and sparks are the sneaky ones.

• Campfires and firepits have no place on moorland, even in a cleared stone ring, even on what looks like bare ground. Roots and peat beneath the surface can carry fire away unseen.
• Disposable barbecues are the worst offenders. They stay hot long after the food is eaten, they tip over easily in a gust, and they are frequently abandoned still warm.
• Liquid-fuel stoves deserve respect. Meths and petrol burn with a flame that is almost invisible in daylight, and priming spills ignite on a light breeze.
• Kelly kettles and wood-burning stoves throw sparks from the chimney, which is precisely how a fire starts several metres away in dry grass.
• Even a gas stove with a windshield can scorch if you sit it on dry litter or tip it while lifting a pan.

If you genuinely need hot food on a long day, plan around it. Carry a flask, eat cold, and keep everything that could produce a flame or a spark packed away until you are on tarmac or wet lowland grass.

Smoking on the Hill: Simply Don't

A cigarette end is a small, glowing ember in a paper wrapper, and dry heather will catch from it within seconds. Ash flicked from a window or a hand can drift metres before landing. Matches struck and dropped while still warm do the same job. On moorland in a dry spell, the honest answer is not to light up at all.

If you smoke, do it at the start of the day before you leave the car park, or on a proper break beside tarmac or a wet, grazed field. Anything used to light a cigarette belongs in a sealed metal tin, not in a pocket where it can blow out. Never stub anything into the ground, and never assume a damp-looking patch of moss will kill a spark. Wear the tin home along with your other rubbish.

Glass, Litter and the Small Oversights

Broken glass and discarded bottles act as lenses in strong sun, focusing heat onto tinder below them. Even an intact bottle left on a wall or a rock can start a fire that way. Carry all glass out with you, including the bottle you found and did not bring.

Cans, foil and plastic wrappers are less dramatic but still rubbish on a fragile habitat, and discarded food attracts scavengers into areas where ground-nesting birds are sitting on eggs. Beyond litter, think about parking. A hot exhaust or catalytic converter sitting over long, dry grass has started real moorland fires. Park in a designated layby or car park where the ground is bare or short-cropped, and never park on verges in dry weather.

Keep dogs close, too. Dry spells often coincide with the nesting season, and a dog crashing through heather disturbs birds already under pressure from drought and reduced insect food.

Read the Signs and the Local Notices

During dry spells, land managers put up clear warnings: fire risk indicator boards at car parks, laminated notices at stiles, red flags on grouse moors, and posts on estate and ranger social media. These are not there to spoil your day. They reflect real fuel conditions, wind forecasts and how hard it would be to get a fire engine anywhere near a burning hillside.

• Check the current risk level before you set off, and again at the car park where the local board is likely to be more up to date than a general forecast.
• Respect temporary access restrictions. Open-access land can be closed for fire risk, and the closure usually covers the exact high, dry ground you were planning to enjoy.
• Obey "no stoves, no smoking" signs absolutely, not selectively. They are written by people who know the ground.
• Adjust the plan, not the signage. Swap a high moorland ridge for a low-level valley path, a wooded trail or a coastal walk. The hills will still be there after rain.

If a warden, ranger or estate keeper asks you to turn back or take a different route, take it well and ask what they would recommend instead. They are usually delighted to suggest something that suits the conditions.

If You Spot Smoke, and Walking Lightly Afterwards

Smoke on the skyline in dry weather should always be treated as a fire. Call 999, ask for the fire and rescue service, and give your best location: a grid reference, a named feature, or a pin dropped on your mapping app. Say what is burning, roughly how big the area is, and which direction the wind is pushing it. Then get yourself and your group away from the smoke, moving downhill and downwind if you safely can, and use a track rather than pathless heather.

Do not attempt to beat out flames yourself. moorland fires move faster than people on foot, peat can burn beneath you, and firefighters need roads and access points kept clear. If you know where the gates are, mention them when you call.

After a fire, give the ground time. Walk on established paths rather than across burnt areas, where the peat surface is fragile and erosion begins quickly. Keep dogs on leads around nesting habitat and recovering vegetation. Report damaged signage or fly-tipping to the local authority or land manager. Most of all, carry the habits home: no stoves, no smoking, take the glass out, park on hard standing, and read the signs. Heather grows a few centimetres a year at best. The care you take on one warm afternoon is what keeps our moors worth walking for the next thirty.