2.Spring onion.
I usually plant them every month and use them within spaces and as a partner plant for lots of crops. Its astonishing how many plants you can have in a tiny space.
They are slow-growing, however, if you plant each month, there is always something you can harvest.
Sometimes we remove the whole plant and other times only some the green tops so it keeps growing.
We never purchase spring onions. You can grow at least 50 spring onions in a 1 m2 and in our climate they can be planted for 8 months in sun and 4 months in partial shade in the hotter months.
It is fiddly but usually plants these separately by pulling apart multiple plants often together in a seed pot.