Tropical avocado trees grow well in large containers or half whisky barrels on a sunny patio or deck, especially dwarf cultivars. Their bushy evergreen foliage makes a welcome ornamental addition to the patio. Originally from Mexico, kids can grow avocado trees outside in Southern California with regular water, organic biologically rich soil, and full sun. In cold climates, kids can put the container for the avocado tree on a wheeled pot caddy and move it indoors for the winter. Kids can start an attractive houseplant from an avocado pit, but such plants rarely fruit or produce fruit after growing eight to ten years, unless grafted. Avocados are self-fruitful, but some trees have flowers that are ready to receive pollen in the morning, with pollen that isn’t released until the afternoon. Other avocados display the opposite pattern, with flowers ready in the afternoon and pollen released the following morning. Planting both types of trees guarantees good pollination and more fruit. Thousands of flowers bloom on the tree between January and March and a tenth will develop into dark green fruit dangling on long stalks that mature on the tree for three to six months. Avocados are heart healthy with omega-3 oil and cancer fighting antioxidants, and kids love yummy guacamole with chips.