Answer: Kidney beans like full sun (at least 6-8 hours a day) and well drained, moist soil. If your balcony gets enough direct sun and the pots are at least 12 inches wide, then you should be able to plant kidney beans. Use a potting soil mix that containsperlite or vermiculite and mix that with bagged compost or topsoil 1:1. I assume in Argentina you are entering the winter season soon, so this may not be the time to plant. I'd check with gardening friends and ask when they plant beans in Buenos Aires.
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