After saving squash seeds from the vegetable, let the dry out on a paper towel for a few days, plant them a quarter-inch deep in sterile soil, and water them well to germinate. Produce a beautiful squash plant with gardening help from an urban horticulturist in this free video on plant seeds. Expert: Stan DeFreitas Bio: Stan DeFreitas, also known as Mr. Green Thumb, has experience as an urban horticulturist working for the Pinellas County Extension Service and has taught horticulture at the St. Petersburg College. Filmmaker: Christopher Rokosz