Monday, 11 February 2008

Wicking Box Gardens

Wicking Box Gardens
I had to plant some of these rapidly growing brassicas so I decided on a few wicking boxes.
The concept of these is the same as the in ground Wicking Beds.



You need a container without drainage holes, it's sides need to be at least 30cm tall.
Here in Aust broccoli is packed in polystyrene boxes that are just about right for this.
They are 600 mm x 300mm in size and will need a hole made in the side about 100mm high for drainage. Experiment with the height of this hole.

If you only have boxes with holes in them use these but line the base with plastic. Only the bottom 100mm needs to be covered as it's only to this height that will need to hold water.



For these I'm using up some hose that is sold for distributing grey water from washing machines.We're not using this in our grey water set up so it's been sitting in the shed. It's a 22 mm hose and has holes the length of it.
I had some of the larger drainage pipe left-over from making the in-ground beds so I tried some with this too.



The ends of the small hose were blocked with some of Doc's leftover dowel bits. The larger hose was able to be wedged against the edge of the box.
These hoses were placed in the bottom of the box and covered with some chux-like cloth (thin cleaning cloth) off a roll from the cheap shop.



The covered pipe was surrounded with chopped pea straw and shredded paper to hold the water. This was covered with a thin layer of chook house bedding a mixture of wood shavings shredded paper and chook poop.



I used Max Mixer to make up a mixture of potting mix, compost, blood and bone, coir soaked in Seaweed extract, Charlie carp, Epsom salts and potash.



An important part of this system is to add some worm bedding including some of the compost worms.



A tube of 50cm drain pipe was cut and had 15 mm holes drilled into the sides of it. This is where the worm food will be put and the worms will enter it to eat.
This saves having unbroken down food scraps in the box. The scraps are blended up and put into the tube of which about 1/3 is buried.


These boxes have been planted up with Mini Cauliflower, Broccoli, Lebanese Cress, Parsley, Kale, some companions Egyptian Onions, Thyme; later some Celpar and Coriander may be added if there is room.



I've used lengths of small conduit pipe from a cloche kit, to hold up some 50% shade cloth while it's still quite warm, later this will be replaced with a curtain to keep the cabbage moths and aphids off the growing brassicas.

10 comments:

Matron said...

Really fascinating! Can I ask an obvious question? Do you pour water down the pipe holes? Is it supposed to be a water reservoir at the bottom of the box?

Scarecrow said...

Hi Matron
The water is poured into the drainage hose at the top to feed it through to the bottom layer which does act as a reservoir. The rest of the soil in the box is watered by the 'wicking' action whereby water is pulled up to the growing layer. The compost worms live in the growing layers to keep the soil healthy.

From the Waterright site (link below)
"The wicking bed is the most important, it enables us to grow food with a lot less water, it can be used to harvest water otherwise lost and particularly it can actually capture carbon from the atmosphere."
Click here to visit the waterright site with lots more info.

Melissa said...

That looks really interesting! I hope you post some progress shots so we can see how it turns out. Will you get more than one brassica plant to a box or would that be too crowded? Melissa

Scarecrow said...

Hello Melissa
I intend to take progress shots (even if it fails..eek).
It would depend on the type of brassica chosen. I could have put 2 of the mini cauliflowers in I think. Perhaps some of the more compact varieties that are more suited to containers could be used. I wasn't actually planning to use these boxes when I planted the seeds, so they weren't chosen to grow in containers.

Asia varieties like pak choi or bok choy and others that can be planted closer together should work too.

I wanted to make these with a mixture of plants in them, mainly to see what works best in these boxes.

I'm still experimenting with these systems so there's still lots to learn.

Tracy said...

I tried the wicking bed idea in a terracotta strawberry pot because they always seem hard to water and it has worked well so far.

Scarecrow said...

That sounds like a good idea Tracy!
Let me know how it goes.

Jelly Wares said...

Wow... It really is an art isn't it??? You're doing a fantastic job, thanks for the advice!

Jodie

Lottie said...

What a brilliant idea. I use fish boxes for starting off early plants. I am so looking forward to our summer.

You site is such a mine of information which never fails to impress me.

Scarecrow said...

Hi Jodie
It's fascinating really, I'm still experimenting but it's seems to be working so far.


Hello Lottie
Spring must be just around the corner for you...you've had quite a winter.
Your allotment's looking really great and just about ready for planting.

Anonymous said...

Scarecrow, I have a question - Are you saying that you have compost worms INSIDE the box with the plants growing?
I am raising worms in a worm bin, but after reading Charles Darwin's book about earthworms, I was wondering if i could put them in the TONS of houseplants I have. People always say that my home looks like a greenhouse! :) It would be so handy to be able to raise them there! But I hadn't heard if anyone had done that before or not. Thanks for your help!