Most sweet pea varieties are annuals. Perennial sweet peas: Perennial sweet peas come back year after year. You do not need to replant them after the growing season ends, and they will continue to grow for a longer period of time.
Sweet Peas enjoy full sun in the northern half of the US. In the South, they can benefit from afternoon shade. They like cool roots and cool temperatures so they are planted as early as possible in the spring. A light frost will not harm newly planted seedlings.
As the vines explode into lush growth, it's important to keep them tied to their trellises. Once the vines get going, sweet peas can grow more than a foot (30.5 cm) a week.. . . . .364011236113!]0000000000000009783314147101!]
