“This is my favourite season” – I say, almost every month.

Although I’m bound to say that we’ll be pleased when this endless, wet renegade October spring finishes – hopefully some time mid week. A couple of weeks ago one of our sons was remarking how short the cow parsley was – half its usual height at this time of year, but now it’s properly caught up and looking lovely. This old horse chestnut tree has an unusually large foot, I think, because it’s perched on the raised bank of the towpath next to the river on one side and the Green on the other. We don’t have that many hedges in the centre of Bath, but what we do have is an abundance of paths and their verges alongside the river, and they never look better than they do right now.

But there’s a conundrum here. Hedgerows have their own built-in supporters clubs but verges? Ironically, the local council have designated the edge of the Green as part of a wildlife corridor, so on the other side of the tree in the photo is (at last) a wide unmown verge. It’s taken several years to convince the tractor drivers that these weeds are allowed to stand, especially when the same department sends out the spray gang every spring to ensure that their less fortunate kin are given a good dose of glyphosate. The pavement outside our block was just beginning to fill with plants when they were felled by the sprayer. We’d actually thought of taking up the challenge of naming them all with chalk, on the pavement after very successful trials of the idea in Oxford and London; but the neighbours would probably get up a petition to get us banged up for criminal damage.

The contrast between the wild areas and the ones the council maintains is painful to behold. One of our very favourite walks takes us along the river between the bus station, the railway station and the entrance to the Kennet and Avon canal. It’s not the most salubrious path in the city. The railings under the railway bridge are encrusted with a thick layer of pigeon guano and there’s a good deal of broken glass, abandoned bottles and cans. Alongside are some of the shabbiest boats in the fleet; the leaking superstructures covered with improvised tarpaulins. On the far side of the river are the backs – the bits of the city that we don’t advertise; the bus station doesn’t have the same glass panelled appeal at the back – (there’s not that much at the front either!). Brunel’s architectural ambition didn’t stretch to the back entrance to Bath Spa station either, and the sounds and smells that drift across from the far side are inclined towards diesel and burgers, accompanied by extractor fans that never seem to go quiet . It’s a path used more by commuting cyclists and locals. Further along the river approaching Pulteney bridge it gets better once you’ve got past the Royal Mail sorting office.

For me the great redeeming feature of that section of the path is the weeds. Many of the photos I’ve posted on this website were taken there. It was there I learned to sort out the ragworts; there I fell upon a group of greater celandines with real pleasure; there the usual suspects like willowherb which is a more diverse family than I ever knew. There’s nothing of any interest to a box ticking collector; but at this time of the year the gloomy path is normally illuminated by splashes of bright colour and a seminar’s worth of leaf shapes if you’re into the naming of plants. However, by the curious logic of the council, these plants are weeds, and have therefore been sprayed. For goodness’ sake, they’re mostly perennials and early seeders so they’ll be back up again next year probably inducing another spasm of indignation and chemical abuse; some of which treatment will drain immediately into the river – or water supply as it’s known in other places!

I’m interested in this human capacity to reduce so much of the natural world to the status of pest and weed, while simultaneously revering nature, except manifestations where it interferes with our pleasures, appetites or profits. If you’re a cinnabar moth you don’t spend all day flitting from ghost orchid to ghost orchid – what gets you going is ragwort. Moths like weeds and bats eat moths, so killing weeds disrupts a whole food chain. Red admiral, small tortoiseshell, painted lady and comma butterflies all prefer to feed on nettles rather than red list rarities. In fact many of our most threatened species of butterfly and moth like feeding on what we choose to call weeds, growing in environments that we like to think are ideal sites for building people-warehouses – and irony of all ironies, this patch of neglected and chemically blasted tarmac could be a tributary of a much advertised “wildlife corridor” running from East to West through the city. There are otters swimming less than half a mile downstream and herons are two a penny. Why has nature got to be tidy? The worst these weeds could do is brush against your legs and for large parts of the year they virtually disappear. Are we going to erect a large illuminated sign advertising that wildlife should cross the river at the sorting office and fly across the shopping centre in the direction of Royal Crescent and Victoria Park in order to rejoin the corridor just after the Territorial Army centre?

This is one of the terrible effects of a culture that separates us entirely from anything except the human – and precious few of them too! Growing our own food, or even a small part of it, teaches us very quickly that we’re a part of nature. Recent discoveries have deepened our understanding of how intensely related we are to the natural world, and how, by failing to acknowledge our dependence on nature as part of us – and ourselves as a part of nature; we are rapidly destroying trillions of tiny threads that – like invisible circuitry – keep the show on the road.

The language of science and the culture of materialism have enabled us to do with the earth pretty much anything we please. Except that by thinking that knowledge always trumps wisdom, we’ve spent a couple of centuries behaving like a teenager given a powerful motorcycle. It won’t end well. Our imaginary teenager will protest that they’ve never yet had an accident; that they’re having the best fun ever and motorcycling is a human right. But the metaphor breaks down at the funeral because there may not be any mourners left to say what a great person they were and how they lit up the room with their personality.

Here are some bits of the Bath earth that were neglected this spring. Thank goodness – left to right the towpath, the Potwell Inn kitchen and the allotment.