Cypress Seed Collection and Germination: Timing Is Everything

When to Harvest Cypress Seeds

Green cones contain immature seeds. Wait until cones turn brown and begin opening on the tree—this indicates seed maturity. Collect cones before they fall, or gather freshly fallen ones.

Seed Extraction and Stratification

1. Dry cones in paper bag until they fully open and release seeds.
2. Separate seeds from cone debris.
3. Most cypress species require cold stratification: place seeds in damp paper towel, seal in plastic bag, refrigerate 90 days.

Sowing and Germination

• After stratification, sow 1/2 inch deep in pots with well-drained mix.
• Keep moist but not soggy at 70–75°F.
• Germination is sporadic over several weeks to months.
• Transplant seedlings to individual pots when handleable.
• Harden off and plant outdoors after last frost in full sun.

Alternative: Natural Outdoor Stratification

Sow seeds 1/2 inch deep in prepared outdoor bed in fall. Winter cold provides stratification; seedlings emerge in spring. Keep bed weed-free and water during dry periods.