Comfrey – the living mulch

Up until a year ago I’d never grown comfrey but as I started to learn about the wonders of this plant in the Permaculture system I decided that I’d get some as soon as the live root stock was available.

When the little stick-like pieces of root arrived in the post, cocooned in protective moist paper, I dutifully planted them as instructed burying them a few inches in the soil. Within a few short months, the nominated empty spaces in the garden had been completely consumed by a lush hairy broad-leafed plant. So finally I knew what comfrey looked like!   

Comfrey is a very diverse plant, prized for it’s deep root system, high nitrogen content and medicinal qualities. It’s a perennial herb and one of many popular living mulches and a companion plant for a range of fruit such as citrus, avacado, persimmon and tamarillo.

Young comfrey growing as a companion plant for citrus (very very small citrus!)

But comfrey comes with a few warnings. The first one is to make sure you plant it exactly where you want it because once you put it in, comfrey can be a mongrey difficult to get out again. It can also grow into quite a big plant and although low to the ground, will shade out smaller herbs and flowers as the leaves are broad and long. The good news is that comfrey can also be grown successfully in pots so all you small space and balcony gardeners can still grow your own supply of living mulch.

Comfrey also lives for a long time and as I found out, the more you cut or pluck the leaves, the quicker and thicker they seem to grow. I read somewhere that comfrey shouldn’t be harvested in it’s first season but the chooks and I have raided my plants many times with absolutely no detremental effect, if anything it grew back stronger.

Comfrey as a livng mulch companion for an Australian Finger Lime

Because of comfrey’s deep root system it mines nutrients and moisture from deep within the soil where most plant roots don’t go. The leaves are also very fibrous and once cut, break down quickly. For these reasons comfrey makes extremely good mulch and as a vigorous grower, it can handle being cut back several times during the growing season. When cut and left in-situ the wilted leaves provide nitrogen, phosphorus, potassium and calcium to the surface soil and in turn are absorbed by other plants. Nitrogen is particularly important for plant reproduction and growth.

Wilted comfrey leaves can also be dug into the soil and left to break down creating mineral rich soil. This is a great way to prepare beds inbetween crops and restore essential minerals that may have been leached during heavy rains.

Comfrey is also recognised as a powerful compost activator due to high levels of nitrogen and can also make an excellent fertiliser for your vegies, herbs and fruit trees. Here’s another warning…my first batch of comfrey fertiliser stank to high heaven and was an arena for summer mozzie olympics so make sure you keep the brew covered and away from the house!

Here’s an easy recipe for comfrey fertiliser:

half fill a small container with comfrey leaves

completely cover the comfrey and fill the container with water

seal with a lid or cover and stand in a cool area for around 3 weeks

strain and dilute 1:1 with water before spraying onto vegies and fruit trees

Once a comfrey plant is a few years old, you can propagate new plants from root cuttings. Planted closely together they will form a thick barrier between garden beds and will stop weeds and grass in their tracks. Before you know it you’ll have a ready supply of highly nutritious mulch for your beds and some great chook tucker.

The chooks enjoy comfrey too

Comfrey is also recognised as having excellent medicinal qualities as it contains allantoin in both the roots and leaves. This helps to stimulate the growth of new cells and is excellent for external healing, particularly bruising which makes it a wonderful additive for home made health remedies such as soaps, ointments, lipbalms and salves.

Stay tuned for my next update when I show you how we made a simple vertical garden using PVC pipe.

What makes a permaculture garden?

Have you ever wondered how Permaculture gardens differ from ordinary vegie gardens? Okay, probably not…..but just in case you ever get asked again I’ll tell you.

For many people Permaculture is too conceptual but for me it provides the tools I need to create a sustainable, healthy and efficient garden system.

When we started setting up our garden last year we started by looking at the site features. Some are natural features and some are material. These are things like the slope and aspect which is important in determining where the sun, wind, rain, frost and fire come from; water sources: where will they come from and how will you provide water to your site; where will you place your structures like a shade house or windbreak; if and how you’ll use animals in your system and where will they be put; and what sort of access do you have to the areas that are going to be where you grow your food. In this regard, no two sites are the same but to create a functional, low energy garden they are fundamental elements that need to be considered.

Once you establish these points you can then decide where and how to place the functional elements of your garden like growing beds, chook runs and ponds. Sometimes there’s no choice in the matter and you have to work with what you’ve got but how the elements interact with each other will help to determine where they should be situated to create the greatest efficiencies.

In Permaculture we believe your compost bins need to be very close to the kitchen because you’ll probably want to deposit your food scraps a few times each week. There’s no point having a compost bin or system miles away from the house as it’s inefficient and the less time you spend on these daily chores the better and you’re more likely to manage your compost bin if it’s in sight. Well managed compost means a better end product which leads to healthier soil and greater productivity.  And when the compost is ready, you won’t have far to take it to your garden beds because your main herb and veggie growing area is also going to be close to the house.

As we’ve discovered and contrary to popular belief, keeping chooks healthy, productive and safe takes a considerable amount of time and effort so they need to be as close to the house as possible. How many times have you seen a chook house tucked right down in the back corner of the yard, out of sight and right out of mind. If you work away from the home like I do, you need to ensure these elements are placed nearby to reduce the time and work involved in managing them otherwise you’re likely to give up on them because they’ll become all too hard and time consuming.

In Permaculture we also zone our home environments and Zone 1 is where we do the majority of our food growing. Right outside my kitchen door is my herb garden and a few other plants I keep in pots. I also have a seedling tray that I tend to daily and a compost bin I can access very quickly from the kitchen. We also have a small pond which creates a beautiful microclimate and provides important habitat for insects and pollinators. The chooks have a special run called the ‘Summer Palace’ only metres from the kitchen so I can easily keep an eye out for them as our yard is open to stray dogs, foxes and the odd bush turkey.

The herb garden looking towards the kitchen window

It takes a while to get things right and it’s important to remember that the Permaculture garden is not a static environment and as ideas evolve and problems become apparent things should be moved or modified to create greater efficiencies. This is one of the reasons why Permaculture Design is so important as it aims to iron out many of the inefficiences before you get started.

I thought I’d share the key functional elements of our Zone 1 and briefly highlight their values and how we use them.

We have a worm farm, worm tubes and 4 compost bins, 3 of them operate in a system. We use all these elements to reduce the amount of waste leaving the site and to produce natural fertilisers and compost teas that do wonders to enrich our soils and increase soil microdiversity. The worm farm and compost bins are right outside the kitchen and back doors and the worm tubes are directly in the garden beds.

We shred and mulch leaves to make compost and soil cover and to reduce the amount of ground fuels for fire management. Our shredder is parked under cover and right near a large mulch storage bin. Shredded material goes straight into the bid for storage so we have a ready supply of good quality mulch.

We harvest water in tanks, re-use grey water from our washing machine and will develop a reed bed for filtration. Our water tanks are spread across our property, each one providing irrigation to a specific zone in the garden. Our grey water is used to irrigate some of our fruit trees and the surplus will eventually filter through a reed bed to be recycled into the lower garden. We use our on-site water to reduce waste, capture energy and utilise and recycle on-site resources.

We have 3 ponds at the moment in different locations and use them to create microclimates and habitat for insects, beneficial pollinators and predators. Our next pond will be purpose built for aquatic plant food as we currently grow our waterchestnuts in pots.

We only have time for two backyard livestock species: chooks and earthworms. The chooks live very close to the house for easy access and provide food, feathers and loads of pleasure. Both the chooks and earthworms provide manure, soil and aeration.

Our Warré beehive will arrive in spring so we’ll have our own supply of natural pollinators, honey and honeycomb. We’ll only have to access the hive a few times a year so it will be placed in the lower garden where it can also take advantage of a ready supply of flowering eucalypts and the bee line can be directed away from the neighbours.

Our paths, terraces and key hole garden beds have been built for efficiency and functionality and provide important edges where we grow herbs and tea plants. The terraces take full advantage of the northerly aspect and steep site which encourages deep watering and sequential gravitational drainage.

Our vertical gardens capitalise on heat sinks and utilise otherwise wasted spaces and we plant guilds and polycultures to increase diversity which encourages a chemical free environment through natural pest control. We also save seed to increase the cycles of productivity and diversity and grow most of our seedlings.

Permaculture gardening is incredibly enjoyable and rewarding and our garden is starting to provide us with a great range of healthy, chemical free food. We’re still developing it and will be for some time but so far it has started to save us money and helped to create a level of resilience. We’ll continue to grow with our garden and share our experience but in my next post I’ll tell you all about….the wonders of comfrey.

A quiet celebration of Permaculture

The weather in Sydney is sensational at the moment. Cool evenings and warm sunny days and the weekend was a perfect time to visit some local food gardens and catch up with aquaintances as we celebrated National Permaculture Day.

A year ago we visited a local Permaculture garden and walked away totally inspired and excited to get our own garden started. On Saturday we went back to that same garden to take another look and the minute we arrived we knew exactly why we had felt the way we did 12 months ago.

The garden is unbelievable. At just two and a half years old it is full of fruit, herbs and medicinal plants which grow from the very edge of the road verge right down to the back corner of the block. Almost every centimetre of the 880m² is covered with some sort of food including the recent addition of 6 chickens who are just starting to provide eggs.

Libby the owner loves her garden and is also amazed at the progress over the last couple of years.  But inspite of it’s abundance the garden is still taking shape and in her own words ‘is just starting to hum’. Gardens are like that, things take a while to get going but the combination of time and the significant rain we’ve had in Sydney over the last year has had a very positive outcome on plant growth, and Libby’s garden is no exception.

Chris and I were very interested in learning more about Libby’s espaliered fruit trees as we have plans to put in a few of our own. Like Libby, we’ll use them to section off parts of the garden and take advantage of some unused vertical space. This apricot is just starting to take shape and besides looking gorgeous will be very easy for Libby to pick. Other espaliered fruit growing in the middle of the garden will mean she can pick fruit from both sides of the plant rather than struggling with ladders.

The espalier wires sit away from the wall so the plant doesn’t grow directly against the brick. This prevents the leaves from burning and is especially important on this north-west facing wall as it absorbs and radiates a considerable amount of heat at this time of year.

I took the top photo last May and you can definitely see the difference in plant growth over the last 12 months.

The vegie gardens are located in a warm sunny spot are also close to the house for easy access. They’ve just been planted out with winter crops but in no time at all will be full of food.

We couldn’t have asked for a better way to spend our 12 month Permaculture anniversary wandering around this fascinating garden with its diversity, vitality and colour.  As we sat enjoying Libby’s company over a cup of tea little could she realise the impact her garden has had on our lives. How things have changed for us over the last 12 months.

Next post I’ll be looking at….what makes a Permaculture garden.