This pic was taken last week. My first attempt at veggie growing. The patch is slightly raised, open to ground. All the plants you see were started indoor from seeds (except for carrots, peas and beans).
They are: Carrots (didn't thin, my bad). I don't know if I would get anything out of them. I planted them in beginning of may. I'm planning to replant in late August. Front section: Cucumber & zucchini on the right. Bell peppers on the left. Peas and beans in middle row. Back section: Kale and tomatoes. More zucchini towards the back. One row of lettuce behind tomatoes.
The only thing that didn't work for me is spinach. They germinated and then stalled and died after they grew 2 - 4 true leaves.
Oh yes, if you're wondering: I bought my seeds from Oh Canada seeds (https://ohcanadaseeds.ca/). I bought their 10 container veggies pack because I'm beginner.
You're most likely right. The inadequate spacing was due to my inexperience. I'm planning to open up another patch next year and double my growing space.