You can grow large sweet onions such as vidalia or Walla Walla onions if you know how to plant them properly, transplant them at the right time of year and then provide the care they need. Learn how to produce some massive onions in this free video on vegetable gardening. Expert: Ali Reynolds Contact: Outstandinginthegarden.net Bio: Ali Reynolds owns and operates a small organic nursery. She has a master gardener’s certificate as well as a landscape and gardening certificate, and has gardened for more than 35 years. Filmmaker: Mike Phillips Series Description: If you’d like to make your green thumb a little greener, dive into these useful tips on vegetable gardening and then watch your garden grow! A professional gardener explains and demonstrates in this free video series.