Organic Wild Pea Vine {Dolichos biflorus} Heirloom | High yield | Edible | NON GMO | 25 seeds Free U.S. Shipping! The Wild Pea grows as a vine, producing Yellow flowers and striking electric-Yellow colored seed pods. Lablab bean is a good choice for a quick screen on a trellis or fence. How To Wild Pea Vine Vine: Many gardeners recommend nicking the Hyacinth Bean seeds with a knife and then soaking the flower seed in water for 24 hours before sowing. Planting Hyacinth Bean seeds can be done directly outside once danger of frost has passed. Lablab typically blooms from mid summer to fall. The Hyacinth Bean herb can be a perennial in frost-free climate zones however, in other zones it grows as an annual climbing vine.flower Specifications Season: Perennial USDA Zones: 9 - 11 Height: 96 inches Bloom Season: Mid summer to fall Bloom Color: Yellow Environment: Full sun Soil Type: Soil can by sandy or clayish, well drained soil, pH 4.5 - 7.5Planting Directions Temperature: 65 - 70FAverage Germ Time: 10 - 20 days Light Required: No Depth: 1/2 inch - 1 inch deep Sowing Rate: 2 seeds per plant Moisture: Keep seeds moist until germination Plant Spacing: 12 inches