Why You Can't Sow Seeds in Preen-Treated Beds: Alternatives for Seed Starting

Preen (Pre-emergent) Blocks Seed Germination

Preen prevents all seeds from sprouting, including your flowers. Digging rows and adding topsoil won't help—the chemical barrier remains.

Workaround

• Start seeds indoors or in outdoor flats.
• Transplant seedlings after Preen degrades (check label for duration, typically 8–12 weeks).

Do not direct-sow in treated beds.