So on the last post, I started to touch on our soil composition (if you can even call it soil ha) here in the desert. Our plot sits on a former river bed which contains quite a bit of clay content. So much so, that people used to build houses out of it. Called adobe. However, now these houses go for at the cheap end 500k and up. Yes, half a million dollars for a mud house. That isn't to say, however, that the construction of the mud house doesn't require extremely skilled craftsmanship and architectural prowess. It does. It is still a mud house, and that concept is hilarious to me. Even though it is a closely held memory in my heart- of home.
ok so, water!
The biointensive method says to use 50% or less clay, mixed with sand and aged manure. We probably did like 30-40% clay, 20% sand and 40-50% aged horse manure. Our first growing year we didn't have any compost ready, so this was our only option was aged horse manure. I estimate the quanitities because we kind of eyeballed it and didn't measure things out. Yes, I can see people shaking their heads right now, about being OCD perhaps or taking exact measurements. But hey, I AM actually a scientist and to me, resourcefulness, resilience and quick thinking have been far more rewarding than being anal retentive about everything I do. It's sort of like one huge experiment.
Never, ever ever would I recommend raised beds in a desert environment. They dry out very quickly, need water up to 3 times per day in the mid summer and do nothing to improve the existing soil composition in the ground to work with.
BUT... and a big BUT here, is that having actual beds in the ground can be a lot of work. You need someone to dig them who has a strong back. (I know, I threw my back out last year carrying cinder blocks and I am a very healthy physically active person). With that being said, be aware and maybe you can find someone to help you dig. :)
Ideally, beds must be dug 24" (yea I know, its kind of a lot). If you can loosen the soil by using a large fork, more power to you and your plants. If you can't get that far in (we couldn't our first season) then you will need to stab stab stab with the fork and try to at least loosen particles. As your plants grow, they will do a little of that for you.
The fortunate part is, after the first dig, it gets a little easier to dig holes since you already have some set out.
It gets extremely hot here in the month of July, so having a nicely in-earth bed that you can deeply water cuts down on watering costs and amount. and keeps your plants at a lower temperature. The depth allows your plants to spread roots becoming more heat tolerant and they are able to get nutrients more easily.
So that's the philosophy behind our basic planting method. This process is also referred to as double digging.