Answer: Unlike their full-sized cousins with indeterminate growing habits (often to 5' in height), dwarf varieties of Sweet Peas will grow only 6"-18" tall. They are also referred to as bush-type sweet peas and are self-supporting because of their low-growing nature. You can put up a short trellis just for effect, but the plants won't really need any support.
Sweet peas grow best in full sunshine, average soil, and regular water during the growing season. As nitrogen-fixing members of the legume family, they require no fertilizer. Sweet peas grow best in the cooler temperatures of early spring, but will continue to bloom over a long season.
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