Overwintering Perennial Seedlings in Pots

Late-started perennials (lupine, delphinium, etc.) in 4-inch pots need winter protection in Washington State.

Options

• Plant in ground now if 6+ weeks before hard frost.
• Otherwise, keep in pots in cold shed/garage.
• Mulch pots with hay/leaves; avoid low spots where cold air pools.
• Water occasionally—don’t let dry out completely.

Finish greenhouse for next year’s early start.