Propagating Crepe Myrtle from Seeds and Cuttings

How do I propagate crepe myrtle from seed or stem cuttings? Where do I find the seeds?

Seed Propagation

After flowering, pea-sized berries form in clusters. Wait until they turn brown, then extract the 4-6 small brown/black seeds per berry. Press into moist (not soggy) potting soil, cover lightly, add a thin layer of milled sphagnum moss to prevent damping off. Seal pot in a plastic bag, keep at 75°F. Germination in 2 weeks. When seedlings have second true leaves, prick out into individual pots. Acclimate 10 days before planting in full sun.

Cutting Propagation

Take 8-inch green softwood cuttings (no flowers) in late spring/early summer. Cut where green stem meets main branch with a sharp knife. Strip all but top 2-3 leaves. Dip in rooting hormone. Stick 1 inch deep in wet sand or soilless mix. Seal in plastic bag. Roots in 4-8 weeks—check by gently probing with a pencil. Pot up when well-rooted.