The moon and the weather – their effect on the shed door and me.

Exterior view of a potting shed with a wooden sign labeled 'POTTING SHED' in a window framed with wire mesh.

Our shed goes up and down – not in a major way but enough to make opening the door quite difficult at times. When we first put it up we’d seen enough tottering sheds to know that if you just stand them on the ground – sooner or later the footings will rot and they’ll fall over – and so our shed has foundations – a thick layer of gravel topped with sand and then capped with level paving stones. What we couldn’t have known is that our clay subsoil seems to rise and fall in harmony with the water table, thereby twisting the frame and jamming the door.

I share this entirely uninteresting fact because in my earlier reflections on the way in which gardening is the kind of practice that leads to flourishing, I left out some threads which can be woven into a bigger picture. The rising and falling of the shed always seemed to me to be down to the rising and falling of the water table. The allotment is close to the river and we have at least one small underground stream running below it. In flood conditions it occasionally breaks out from under the apple trees and runs across the surface. The piece of pipe that secures the polytunnel door is driven into the earth and you can see the water level at the bottom of it. There’s no serious hydrological kit involved at all, if the door is hard to open the foundations have dried out and QED the allotment will need watering.

I once visited a pottery factory in Wrecclesham near Farnham where they used the local clay to make traditional pots of all shapes and sizes. Their kiln, a large brick built bottle kiln had no obvious pyrometers to measure temperature and when I asked, our guide said that they didn’t use seger cones or any other indicator. They packed the kiln the same way as they’d always done, and when the pots at the top had shrunk to the same height as a corbel that you could see through a spyhole in the intense heat they knew – along with a great deal of practice – that the firing was done. It was a kind of organic knowledge rooted in history and experience.

Where’s this all going then? and what’s the moon got to do with it? Well the missing thread from the previous post was the concept of seasonality. We live in a world a world dominated by constant artificial light, supermarkets which (just for the moment) seem to be immune to the seasons and sell the same food the year round and fly it in, or drive it up from southern Spain in convoys of heavy lorries. If we want sunshine we can just travel towards it and with the benefit of air conditioning, warmth and cold only affect us on the walk from the car park.

The allotment necessarily puts us in the midst of a constantly changing seasonal world and we live in a subtly different seasonal timetable. The weather forecast becomes as important for us as it would to a farmer or a fisherman. Sunrise and sunset are as important once again to us as they were to our distant ancestors, spring, summer, autumn and winter aren’t just words any more, and anyone who reads books on gardening or farming will encounter the esoteric theories of Rudolph Steiner who wrote a great deal about horticulture and who thought that the moon emitted some sort of invisible and undetectable force that influenced the growth of plants. These days the Biodynamic method has crept in at the edges of the mainstream and the moon certainly has an effect on the tides. Our campervan is parked within 100 yards of the river Severn and we get flood warnings from the Government whenever winds, river level and tides combine to make a possible flood. As gardener I’ve always wondered whether the passing moon has any effect on groundwater and a little bit of research suggests that the moon has a greater effect on groundwater levels if you’re very close to the sea but that it also has a much lesser effect on groundwater – measured in a few millimeters at most and that the probable cause is the gravitational pull on the earth being sufficient to cause these tiny distortions.

So our understanding of the earth as an immutable lump of solid ground isn’t quite right. Times, tides, seasons, and weather systems are in constant motion around us whether or not we stop racing about and consider them in relation to our gardens and farms. When Copernicus used his mathematics to suggest the theory and later Galileo used his telescope to prove it, they risked their necks to describe the rhythmic motions of the solar system, because it upset the static view of of a universe with the earth at the centre, and bit by bit our view of the earth and our position in it began to change. Today just a few flat earthers tie their hopes to the idea of an immutable earth but all the signs point to its fragility. It’s a massively depressing thought unless we learn to live in this new dynamic which more closely resembles a complex dance or a multiverse orrery such as was invented by Phillip Pullman whose alethiometer discerns the truth in his novels. But that’s a beautiful fiction; a mythical object that tells the truth about mysteries.

So our choice is whether to retreat to the bunkers in bafflement or to see this immense mutability as a source of wonder – and here’s the link back to flourishing or if you prefer Aristotle’s word, eudaimonia . If human fulfilment can be found through the cultivation and practice of virtues until they become benign habits, then they need to be practiced in the real world, and not the wobbly stage set of “the good life”. Here’s another, longer list of the virtues:

Courage, Temperance, Generosity, Magnificence, Magnanimity, Proper Ambition, Patience, Truthfulness, Wittiness, Friendliness, Modesty, and Justice.

I hope to unpick some more threads from the delightful fleece in the coming weeks.

Two figures walking along a rocky beach with crashing waves and a misty landscape in the background.
Hell’s Mouth bay on Lleyn if you look carefully at that wave you can see how it got its English name

Might moon gardening have a point?

IMG_3484A couple of summers ago I was looking at an infestation of Corn Marigold in an arable crop in Pembrokeshire.  I foolishly (what’s new?) asked the farmer where the plant usually grew and he said “there’s a bit of a clue in the name – Corn Marigold” – drrrr….

And there’s a bit of a clue about my attitude towards magical thinking in the sub-header to the Potwell Inn title.  “A sceptic’s take on being human” . Whilst I will happily assist at the Wassail, say a prayer and bang a saucepan, I don’t go home afterwards puffed up with pride that, once again, I’ve driven off the evil spirits. If only it were that easy. In fact if I had a pixie dust tree on the allotment I’d be a wealthy man with a lot more followers than I’ve got just now. On the other hand, last year’s Snake Oil Extract is going well at £50 a shot when you buy it over the bar.

That just about sums up my attitude to whacky gardening theories and unsubstantiated golden rules. There’s usually a crypto religious hierarchy somewhere, selling off the secret knowledge and running seminars at eye-watering prices. IMG_4942

Scepticism isn’t the same thing as cynicism which presumes something’s bad before even examining it. True scepticism is always open to the possibility of an idea going either way – it just demands the opportunity to give it some thought, read it up perhaps and even try a couple of experiments.

So when I saw a mention of ‘moon gardening’ – in Mark Diacono’s “The New Kitchen Garden” (on page 247 if you happen to have a copy), in a section about the management of the garden at Tresillian House in Cornwall – I had to think a bit. First point, moon gardening is not quite the same as biodynamic gardening. They’re related but separate disciplines. Moon gardening seems to pay attention to phases of the moon for different operations in the garden.  A quick check online suggests that there’s a more complex formulation that includes the pasage of the moon through various constellations but that part has a high cringe-factor for me in much the same way as the full Steiner method does.  There’s a bit too much esoteric that in the end boils down to “because I say so!”

The point that I found most interesting was the notion that the passage and phases of the moon  not only affects the tides but also groundwater. Now that’s a big claim, but at least it’s potentially testable, bearing in mind the huge number of variables at play – surface evaporation, recent rainfall and so forth.  And there has even been some serious research into the behaviour of aquifers close to the sea, that shows a mild correlation. Living close to the sea, and especially if you’re close to the huge tidal range of the River Severn, for instance, it wouldn’t be inconceivable that the rate of run-off could be affected by the spring and neap tides. All you need to do is look at the rising and falling of the water level in the rhynes (drainage channels).  The question then is – how far away from the river/sea, and how high above sea level would the effect still be noticeable?

You’ll never put weight on eating your words!

So back to the allotment because theories don’t grow cabbages. Our allotment is maybe ten feet above river level when the flow is low. When it floods we’re a lot closer. According to my OS map we’re 25 metres above sea level, so if there’s any validity in the theory we’d possibly experience some benefit. If we conducted a trial, the one certainty is that it could do no harm, but I’m sure that trial results can be skewed by confirmation bias. The other source of error would be that anything that increases particular attention on the allotment is bound to bear fruit in some way – the farmer’s boot is the best fertilizer.

Charles Dowding (the no-dig man) makes a positive case for the moon in his book “Organic Gardening the no-dig way” – Pages 67-69, and does it in an open and non-sectarian way.  The tricky part is demonstrated by the old tradition of planting potatoes on Good Friday.  The date of Good Friday and Easter is the only major festival determined by the moon and consequently it can vary by some weeks – at a time when the last frost date is a crucial marker for planting times. So should you follow the moon or the frost dates? I know which I’d go for!

On the other hand Ken Thompson in “The Sceptical Gardener” – Pages 100 – 103, not only rejects the idea he digs it up, flame guns it and gives it a good spray of Roundup to make sure, and with more than a touch of religious fervour. In fact he gets so cross about the “relative positions of objects hundreds of light years away” that he appears to forget that the moon is very large, very heavy and very close.  The fact that it’s burdened with a huge symbolic load is not a scientific argument.

So is it worth a try? I reckon it’s an extremely long shot but anything that increases our sense of embeddedness in the natural order is bound to be a good thing even if it doesn’t grow longer parsnips.