Early Multiflora Mix sweet peas if planted early will guaranteed winter blooms. This mix is one of the only varieties that easily flowers even in winter when daylight is at its shortest. The bloom colors range from reds and scarlets to salmons and creams. This annual vine can grow to be 5 to 6 feet tall and grows well up a trellis. (Lathyrus odoratus) Quantities are per Pound.