Over 100 types of edible plants (e.g. potatoes and tomatoes) and over 200 varieties (e.g. red and blue potatoes; red and yellow tomatoes) are grown in the garden throughout the year. These include unusual food plants (e.g mashua, oca and yacon), heritage varieties (e.g. Broad Ripple Yellow Currant tomatoes) and unusual coloured varieties (purple mangetout, yellow raspberries) rare to find in supermarkets.