I am getting started into permaculture, hugelkultur, well basically anything with culture in the name (except monoculture).
I have this plan, of having a spot with cucumbers, squashes, nasturtium, radish, so that they can all benefit from each other. Right now, this spot is not in the best shape. At first it was only grass; I wanted to do some form of hugelkultur, although it's far from perfect.
I live in a 8a climate. The spot is a slope (about 13 degress), about 8 square meter. I buried a bit of wood, as well as some coffee ground, trying to create some kind of hugelkultur; however I buried at most big twigs rather than actual tree trunks, for a lack of better material. I removed all the grass above, tried to get back as much dirt from it as I could; in some case I just turned upside down the "block" of grass, as to win a bit of time and hopefully have it decompose and feed the soil.
The soil is clay-ish as far as I know, and I have sown a green manure a few weeks ago, with the intent to cut it all and use as mulch cover. The one that grew was phacelia, and it look like it's the only one there.
Here is a picture. So far, the only plants that are supposed to stay are some thyme, dill (both on the right but we can barely see), and artemis annua (on the front, right, but they're tiny right now). All the rest is either weeds or that green manure that seem to be the only succesfull one from all those I have sown.
What can I do, to make this spot a better one for the plants I want to have in it ? I plan at some point to chop the green manure that's here and use it as mulch; is there anything else I should do, either right now or in the future ? I already have a few nasturtium growing in pots, which I'll transplant in a while. Also, I don't have access to a lot of compost or manure, especially right now as most shops are closed, and I don't have a car to transport even small quantities of organic material. I also want to add that in a few weeks I'll have some dried mustard stems available, right now I'm planning to compost them but maybe they could provide the mulch. I have a bit of manure left, should it goes there too ?
Thanks in advance.