Just a thought away from the gardening scenario is the balcony well supported your going to put an unusual amount of weight on it.
Having said that I can see nothing on your list that would not grow in containers of the correct size. Don't over size the containers as that will be a waste of space and compost. As to the growing medium I have used nothing but MPC and my own garden compost for years and seem to do reasonable well.
As to specifics.
Mint if you can kill mint you will make a lot of money by sharing how you do it grows more like an invasive weed than a herb. I grow my herbs in ornamental glazed pots some 12 " in diameter and about the same depth.
Radish I don't know how many you are growing for, I grow for two. I use 3 plastic pots about 8" in diameter and some 6 inches deep. I put about 30 seeds per pot and sow 1 pot every month, this keeps me in lovely fresh radish through out the season.
Lettuce needs containers about 6" deep sow a few every 3 to 4 weeks its pointless having 30 lettuce already for harvest at the same time. This applies to most veg.
Carrots stumpy type can be grown in about 12 inches of compost I use the receptacle off a paper shedding machine as one of my carrot containers.
Tomato's Tumbler grow very well in hanging baskets and are a very tasty tom.
Courgettes need a large deep container I use plastic pots some 24" in diameter and 14" deep even with pots this size you will have to keep on top of the watering.
Broccoli I presume you mean calabrese I grow this in 1 metre square containers about 9" deep 9 plants to the container.
PSB these are very large plants and will need a large container I use my dustbins when my spuds have been harvested.
Leeks I grow baby leeks not the humungous ones they are very tasty and can be grown in containers 6 to 8 inches deep.
Finally cucumber buy a type specifically for growing out doors Marketmore is a good choice. You will need a container about the size of a bucket and again be careful of your watering regime, to little no crop to much dead plant. This will be your most likely to die overnight plant with sometimes no apparent reason they are just suicidal.
There are lots of other crops you can grow for instance runner and French beans do very well in pots.
Remember you will win some and loose some gardening is not an exact science more trying to bend nature a little.
Good luck and have fun.
Potty
Having said that I can see nothing on your list that would not grow in containers of the correct size. Don't over size the containers as that will be a waste of space and compost. As to the growing medium I have used nothing but MPC and my own garden compost for years and seem to do reasonable well.
As to specifics.
Mint if you can kill mint you will make a lot of money by sharing how you do it grows more like an invasive weed than a herb. I grow my herbs in ornamental glazed pots some 12 " in diameter and about the same depth.
Radish I don't know how many you are growing for, I grow for two. I use 3 plastic pots about 8" in diameter and some 6 inches deep. I put about 30 seeds per pot and sow 1 pot every month, this keeps me in lovely fresh radish through out the season.
Lettuce needs containers about 6" deep sow a few every 3 to 4 weeks its pointless having 30 lettuce already for harvest at the same time. This applies to most veg.
Carrots stumpy type can be grown in about 12 inches of compost I use the receptacle off a paper shedding machine as one of my carrot containers.
Tomato's Tumbler grow very well in hanging baskets and are a very tasty tom.
Courgettes need a large deep container I use plastic pots some 24" in diameter and 14" deep even with pots this size you will have to keep on top of the watering.
Broccoli I presume you mean calabrese I grow this in 1 metre square containers about 9" deep 9 plants to the container.
PSB these are very large plants and will need a large container I use my dustbins when my spuds have been harvested.
Leeks I grow baby leeks not the humungous ones they are very tasty and can be grown in containers 6 to 8 inches deep.
Finally cucumber buy a type specifically for growing out doors Marketmore is a good choice. You will need a container about the size of a bucket and again be careful of your watering regime, to little no crop to much dead plant. This will be your most likely to die overnight plant with sometimes no apparent reason they are just suicidal.
There are lots of other crops you can grow for instance runner and French beans do very well in pots.
Remember you will win some and loose some gardening is not an exact science more trying to bend nature a little.
Good luck and have fun.
Potty



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