The seedless variants also have edible skins and grow when avocado blossoms are left unpollinated. 'Although I would be down for a smaller avocado so I could use a whole one each time,' she continued. That big brown thing takes forever to get out, where do I buy,' one woman asked. They used to be exclusively available out of orchards in Spain throughout December making them a novelty on the Australian marketThe stoneless avocadoes look slightly different to a regular avocado because of their seedless centre. But the tree they come from, the fuerte avocado tree, is widely available from nurseries.