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May 1, 2016
May 2016 sow, plant, make compost, using fleece

Frost and hail in late April were a timely reminder to wait before sowing and planting warmth-loving plants. In this area (SW England) its good to sow runner and French beans mid month, undercover, for planting in late May or early June. Even then the wind can be cold and after planting and often I cover young bean plants with fleece (celeriac too unless its hot), which is why I prefer not to put up bean sticks until plants are growing strongly.

One of the many frosty mornings in late April, almost all new plantings are under fleece, see below


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We rolled back the fleece to take a first harvest from these Grenoble Red lettuces, planted March from a February sowing, home saved seed


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After picking and then the fleece laid over again, for picking every week until July


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Many groups have visited Homeacres, these are organic growers from Bath and Bristol

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First outdoor harvests from spring sowings

Fleece covers have been absolutely fantastic at sheltering seedlings from the cold winds. However my method of laying fleece directly on top of seedlings means that frost sometimes singes leaves where they are touching the cover. That small issue is more than offset by the general gain in heat from having fleece so close to the plants, so that it can hold more warmth where it is most needed, in the soil surface and close to plant leaves.

Many of my fleece covers are coming off this coming week, some to be replaced by netting and mesh if the crops are susceptible to birds or rabbits.

Homeacres polytunnel on April 27th, we are still picking abundant leaves from the same plants, harvested since November. Garlic down the middle is a β€˜free crop’


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April 21st, first harvest from the dig, no dig experiment gave slightly more radish and spinach from the undug bed, same lettuce on both


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Beetroot leaves singed where their tips were touching fleece, but the heart leaves are healthy and strong


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Beetroot in the same bed, is already much bigger as the hard work of establishing has happened

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The weather, how much does it change timings?

In spring, sowings tend to catch up, so delays that feel bad at sowing time feel less bad after a few weeks! Be patient. Seasonal sowings work because plants sown at their best time are able to cope with unusual weather, so check my sowings timeline.

For example the spinach I sowed on February 11th, planted March 14th and grown throughout under fleece, has suffered many frosts. But it survives frost and is programmed to make masses of large leaves in cool weather, when days are lengthening fast. We picked it for the first time, just three hours after a frost of -3C, to have 3kg of lovely leaves from an area of 4x5ft (1.2x1.5m). And that is just the first pick, it will continue cropping until flowering after mid June.

Large hailstones but beds are fleeced so no damage to leaves


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Frost on April 28th of -3C 27F, under this fleece is spinach planted in March


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3 hours later we were able to harvest superb leaves from the spinach


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3kg of leaves from 20 square feet of bed, and many more harvests to come

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Hotbeds

Even in May they are useful, so we just topped up the greenhouse hotbed with a large wheelbarrow of fresh horse manure and the temperature has maintained at 60C 140F, one foot in. The outdoor hotbed is simply a recently made compost heap, see below, and its temperature one foot in is a steady 50C. This has kept frost off the plants sitting on a wooden frame above it, but there is a lot of steam around their leaves so this would not suit basil, for example.

The greenhouse hotbed before its final top up of fresh horse manure


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After new manure on top and the temperature is now a steady 60C+: basil, aubergines etc v happy


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A compost heap created 8 days earlier and turned twice already, for trialling as an outdoor hotbed


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We laid a pallet frame on top, plants on that and fleece over

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COMPOST

On course days here, I have always noticed the high level of interest in compost making. Like many growers and gardeners, I find it hard to put enough time into looking after my heaps, so I went on a course with Zach Wright to learn more (organised by RegenAgUK). Meanwhile, Steph and Felix looked after the salad picking.

What Zach recommends is not applicable to everyone so I took the bits that can work here, which are:

  • I need more brown in my summer heaps, as shown by the higher quality of my winter compost when there is less green than in summer
  • I need more drainage at the bottom: Zach demonstrated compost-making on a pallet
  • One really good heap can serve as a fund of healthy organisms to make both extract and tea. The former is from stirring 15 minutes with vortices in both directions, the latter is a 24 hour brew needing a pump to aerate the brew.

In a nutshell, my heaps have not been aerobic enough, and introducing air is a challenge in damp climates where water tends to fill the air pockets. My metal aerator has helped in that, see http://charlesdowding.co.uk/midwinter-update-jan-22nd/

On a course at Homeacres there is lots of interest in the compost heaps


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Zach’s starting point was deer netting on a pallet


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Stirring compost into vortices for making extract, takes 15 minutes on average

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Making a special heap

This is about making the highest quality you can, using whatever is available nearby. As I understand it, Zach recommends 40% brown, 40% green and 15% β€˜activator’ of high nitrogen, such as brewers waste (barley mash) or fresh manure. The other 5% can be old compost, soil, old manure, and we added some rockdust.

Best results are from assembling in one day.

  • Green: Felix went off to scythe some nettles which fortunately included their woody stems from last year (brown!), and we mowed some long grass
  • Brown: my neighbour has some old straw which is too damp for the horses, and we found some woody garden waste thrown over the fence by a neighbour. I ran the rotary lawnmower over this to chop it smaller, lengths of no more than 4in (10cm).
  • Activator: we fetched two barrowloads of fresh horse manure from Jenny up the road, and this helped to stimulate a rapid heating.
  • Also we added two buckets of rockdust while assembling. I had bought a tonne so there is plenty, otherwise a few handfuls would be good.
  • Water is often needed and we put on about 160 litres or 35 gallons while building the heap. The straw parts were soaking up a lot.
  • update June 8th: this heap turned out too wet and with the benefit of hindsight, I would not have added any water at all. We have found that grass mowings in particular hold so much water that they provide enough moisture, during the decay process, to other dry ingredients (see also the mod May and June posts).

The ingredients include grass, straw, woody twigs passed through the mower, fresh manure


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Building the heap


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A lot of treading helped to make good contact between all the ingredients


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One day after the heap was made, its temperature was 58C 136F

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More on compost

I have been much helped by an extra pair of hands and Felix turned the winter compost heap as soon as its last additions had gone on. First addition was in December, of asparagus stalks.

Since turning the temperature is ready 60C or more in a large area of the middle.

Homeacres winter compost assembled since December, its temperature has been always below 40C 104F


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The same heap after turning, it is decomposing nicely


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After turning the temperature under a polythene cover is over 60C 140F


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The new heap whose fresh ingredients are also warming nicely

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And potting composts

Thanks to Peter McGuire from Shepton Mallet, who ordered some Klasmann seed and module compost, we have been able to do a little trial, comparing chard, basil and leeks sown into it, compared to my normal West Riding. Seedlings are growing a little larger in the Klasmann and germination has been excellent, for example of basil, which struggles with the rich density of West Riding. It works well when diluted with 50% vermiculite, just for sowing.

Incidentally the Klasmann worked out at Β£8 for 70l, compared to Β£6 for 40l of West Riding. But its based on peat.

Chard sown 11 days earlier in Klasmaan left and West Riding right


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Sweet basil sown 19 days earlier in 50% vermiculite, 50% West Riding

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Onions and carrots

Onion leaves are fragile and yet I am finding they can do well with fleece laid on top, as in the photos below. This week I plan to remove these fleeces and shall need to cover plants with netting suspended by hoops, to keep rabbits at bay.

This spring I have found fleece extremely useful as weather and pest protection.

March 30th, onions just planted and carrots under the fleece were sown mid March


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April 30th and the onions, carrots are now well established: surface mulch is mushroom compost


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April 28th, Boltardy beetroot planted five weeks earlier, already there are mini beets

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Biodynamics

I am not certified biodynamic but apply the wisdom where appropriate. I think that stirring water in vortices, and breaking them to make ones in the counter sense, is a brilliant way to energise water and from it the soil. Viktor Schauberger told of a farmer in Austria who did that before biodynamics was even invented: instead of a bd preparation, he energised the rotating water by singing!

Here I buy some horn manure preparation and we apply it in spring and autumn.

Elsewhere

Hector from near Villarreal in Spain has created a no dig garden and he writes β€œMy experimental organic garden here in Spain is working very good. I am very surprised about the result”. He is highly trained (hence perhaps the surprise!) and currently works on a huge vegetable farm in southern Spain.

Flicking large droplets of horn manure (500) so it goes through the fleece


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Spreading the preparation inside my greenhouse

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Hector’s new no dig garden, near Villarreal south of Barcelona, on April 21st


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