If you read any of the guff I write you will probably have heard me mention Charles Dowding before. He's a bit of a hero of mine basically because his book 'Organic Gardening - The Natural No Dig Way' made so much sense to me when I first started growing. Charles is all about the soil and in particular adding annual dressings of compost and manure to build a very fertile vegetable garden. He is also, as the title of his book suggests, a champion of the No Dig philosophy where digging is kept to a minimum and the crucial structure of the soil intact. When you read Charles's books the overwhelming impression you get is of good common sense and a profound respect for natures cycles, he improves the soil he works with rather than depletes it and produces vegetables bursting with nutrients and flavour. I figured I had better go and meet him. Luckily for me I'm interested in vegetable growers rather than inaccessible rock stars or World leaders so I did what I always do and just rang him up. I was delighted to find that he was available so arranged a quick road trip around the South West of England and hopped on a plane to Birmingham. Birmingham probably (no, definitely) isn't the most picturesque locale I've ever been in but it does contain some very interesting characters, not least the gardening journalist, author and T.V. personality Alys Fowler (look at me name dropping!) who I'd kind of made friends with previously. Anyway after a busy day and a trip to Alys's allotment we repaired to the city where Alys and her husband gave me the opportunity to live up to the cliche of an Irish man by drinking a lot of beer and talking non stop. Despite carefully planning my drive to Somerset the next day I managed to loose a large chunk of time just getting out of Birmingham (getting out of the hotel had been difficult enough), I made a complete bags of it near Bristol followed by a nearly loosing my reason in Shepton Mallet and arrived at 'Homeacres', Charles Dowdings new garden unforgivably late. Charles was charm personified however and after a glass of homemade elder flower cordial we strolled into his garden. You would be forgiven for thinking the garden at 'Homeacres' had been in existence for over 40 years, the neat rows packed with perfect produce hinting at a rich garden soil nurtured over time. Not the case as you see in the picture. Only 6 months before my visit this was a pretty average bit of grassland full of weeds and field grass completely unaware of its potential as one of the countries most impressive vegetable gardens. "How on Earth did you do that?" I blurted (I was still a little unhinged for the night before), I couldn't believe the transformation in such as short space of time. More incredible still he didn't dig any of it over but spread layers of compost and manure directly over the grass. As Charles says at the end of one of his books: "It really is all about the soil", his ethos being all about improving the fertility or the soil in order to properly feed the fruit and vegetables he grows. Charles reckons he added about 30 tonnes of manure and compost to his garden to get it to the level of fertility he requires. He is quick to point out however that these amounts were only needed to start the garden and aren't needed every year. He also has a large site where he produces commercial crops and runs his courses so don't get a fright, you won't need that much! His advice is simple: 'disturb your soil as little as possible', add nutrients like compost and manure to the surface rather than digging it in. Charles points out that digging disrupts the many beneficial bacteria, fungi, worms etc... which actually benefit your plants. By experimenting with dug and undug beds he has shown that Spring vegetables are slower in the dug beds as the soil recovers from seasonal digging but Autumn crops show less difference as the soil has had time to recover. "But surely you have more of a problem with weeds if you don't dig?" I stupidly add (The garden at 'Homeacres' is immaculate, and I mean not a single weed in sight). Not the case, Charles informs me and goes on to explain how to keep on top these unwelcome guests. Digging soil causes problems from the beginning as dormant weed seeds are brought to the surface where they germinate. The 'No Dig' approach is to add compost to the surface of the soil and this also has the added benefit of helping suppress the weeds underneath. The layers of compost on undug soil also help prevent weeds growing by excluding light. I had always thought 'No Dig' meant keeping mulches topped up through the season to stop weeds and this put me off a bit because I didn't like the idea of grass clippings etc... spoiling the look of my vegetable rows and wasn't entirely convinced it would work. I'm therefore delighted to hear from Charles that he applies a heavy mulch in the Autumn and/or Spring and pretty much leaves it at that for the rest of the year. Constant mulching builds an excellent habitat for slugs which of course we're all trying to avoid so leaving the surface of the soil clear makes more sense. Charles tells me other wonderful things about spreading compost on top rather than digging in but if I went into detail I'd be writing a book of my own so here's the rest in bullet points:
- Nature knows best. Think of a woodland or pasture with any dead material falling to the forest floor or through the grass to the surface of the soil. The material slowly rots and is taken down into the soil by earthworms where it is processed into fertile worm casts. It's how it's worked long before we got here so why do we feel we have to bury nutrients in the soil?
- Any compost or manure which has not completely rotted down breaks down much quicker in the elements above ground than if it is buried without air below.
- Unlike man made fertilizer which is soluble the nutrients in compost are insoluble. This is important as it means a thick dressing of manure and compost in the Autumn won't be washed out by winter rain as is normally suggested. Autumn is the best time to spread as any bulky unrotted material has time to break down properly and will be ready for Spring planting.
- We all know not to add dig manure or compost into soil intended for carrots as their roots will search out these irregular pockets of nutrients and result in a forked crop. (forked carrots are roots with many 'fingers' instead of one straight root). Spreading compost and manure on the surface slowly enriches the soil evenly from above which results in well fed, healthy and straight carrots. (I love that one!)
- Add generous amounts of good compost to the surface of the soil, it's the key to healthy plants.
- Don't break up the structure of the soil, it's alive, gently add to it not force feed it.
- Don't worry about what feed a particular plant needs, they all love nutrient rich soil. Get the soil right and all your plants will have everything they need.
- Stay properly on top of weeds and the hard work disappears.
- Growing is a very creative, beautiful thing. It's when you watch closely and pay attention that you really learn and that's when the true magic unfolds.