|Pepper in container|
A. You have a lot of flexibility in this location because they are in container soil and receive late afternoon shade. The limitations would be the total hours of sunlight the plants receive and winter low temperatures. Flowering or fruiting plants need six hours of very bright sunlight at a minimum to do well.
Best times for planting are in February through April or May. Another great time is in the fall from late September to mid-November. The winter months are okay for winter hardy plants but plants don’t establish quickly when container soils are cold.
Roses and other flowering or fruiting plants will be well as long as they get at least six hours of direct sunlight. Weight is a problem on balconies so use lightweight soil mixes that contain a large percentage of perlite or vermiculite. These types of soils need water frequently.
Mint in container
If you are using tap water then about about 20% of the water that you apply should drain out the bottom of the container to move salts flushed and not accumulating.
You might also consider vegetables, herbs and smaller citrus such as kumquat or lime.