I've just put together a 4x8 raised bed in central South Carolina, USA. It's about 12 in deep. I filled it first with branches and larger limbs, then a layer of dead leaves, and finally a mixture of compost, manure, topsoil, and garden soil. I'm planning to start planting this next weekend. I'm trying to put together a plan for what to plant. The picture above shows kind of a first shot at putting it all together on the veg plotter tool.
I've got marigolds on the corners with tomatoes in the back, alternating with lettuce, cucumbers on either side. I'm thinking I'll have some carrots interspersed with some dill, garlic and basil. The rest is rounded out with yellow squash and zucchini.
So I know this is probably way too crowded, but these are all plants I'd be interested in potentially cultivating. The tomatoes and cucumbers are definites, and the herbs and marigolds are meant to be companion plants to keep away pests and attract pollinating insects.
Please tear this ridiculous amateurish diagram apart, and let me know what I should do instead ๐
So, it is a bit too cramped. You probably want at least 18" at a minimum for tomato plants, and you'll also need space for cages.
Then you have cucumbers and gourds, which sprawl A LOT. That many in that small a space will quickly take over the entire garden bed. You can make the cucumbers climb a support of some sort, but not the squash and zucchini.
The other issue is the ground clearance between the topsoil and your drainage material. 12" isn't very deep, so you'll need plants that can root deep and easily move past objects. Carrots won't do that.
I'd take one of these rows out at a minimum. Maybe do the herbs in containers, maybe the marigolds in a planter just sitting nearby. You might have enough room for one zucchini on the edge of the bed, but definitely not the squash.
Another thing to consider: do you have rabbits and squirrels in the area?
Yeah, I have both squirrels and rabbits. The chain link fence around the back yard should do for the rabbits, but how bad will the squirrels be for what I'm growing? I've never thought of them as potential garden pests.
So, no root veggies due to my soil depth: got it. I should be able to give them a go in a couple of years when my lower layers break down though, right?
How about three tomato plants in back with the herbs relatively close to them? Then just the cucumbers in front maybe? What kind of frame could I get them to grow on?
I'll nix the squash entirely, both yellow and zucchini.
DW about the rodents, just mix a scorching hot hot sauce and some water together into a spray bottle and spray your plants once a week. Animals won't touch your plants or even walk near it if you spray all around it. They don't like their paws being covered in spices. Apply after watering or a big rain. They'll eventually stop coming by at all after a few negative experiences.
Edit: don't forget personal protective equipment, wear a mask and goggles!