Wisteria is easy to grow from seed. Collect the mature (brown) seedpods and remove the seeds. Allow the seeds to dry, then store them in the refrigerator until spring. Sow seeds in spring after soaking them in water for 24 hours. Keep in mind that wisteria grown from seed may not closely resemble the parent plant. The seedlings that develop may not have the flower color or plant form that you would like. Also, seed-grown plants may not bloom for 10-15 years. Plants grown from cuttings or layered from a flowering plant usually begin flowering much earlier than seedlings. In addition, they'll be exact duplicates of the parent plant. For those reasons, you may want to vegetatively propagate your wisteria rather than starting new plants from seed.