- You will get 50+ Seeds of Sweet Pea Knee High Mix Flower Seeds. - Seller Notes ?lathyus odoratus. U.S. Grown seed. Tested 1/23-Germination 92%. Packed 1/23.?. - Planting Time: 4 Weeks. - Soil Type: Clay, Loam, Peat, Sand. - Life Cycle: Annual. - USDA Hardiness Zone (F): 10 (30 to 40 F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Sun. - Sweet Pea "Knee High Mix" is a dwarf strain that is excellent choice for hanging baskets, window boxes or a garden trellis. This strain can be used as a trailing, potted plant or it can be a climber. Very easy to grow from seed. Soak seeds overnight, and plant in early spring. These are fast growing and will start blooming in about 5 to 6 weeks. When the seedlings are about 6" tall, pinch off tops to encourage branching for more flowers. They flower from early summer through late summer. The flowers will be a mix of pinks, reds, purples and white. The flowers are very fragrant and do well as a cut flower for arrangements. 50+ Seeds per order. Thanks for looking!. - Lathyus odoratus "knee high mix". - Annual. - Early spring, soil temp 55F+. - Soak sees overnight. - SOW-2 seeds per,1/2"deep,6" apart. Keep moist. - Germination 14-21 days. - Medium water and little fertilizer early summer and mid-summer. - Flowers are reds, pinks, purples and white. Blooms from early summer through late summer.