Magnolia Seed Propagation: Detailed Protocol for 20-25 Trees

Maximizing Magnolia Seedling Production: Two Proven Methods

For producing 20-25 magnolia trees, use both methods to hedge against variability.

Method 1: Outdoor Fall Sowing (Natural Stratification)

1. Plant seeds 1 inch deep in pots now (late September)
2. Leave outdoors all winter
3. Water if no weekly precipitation
4. Seedlings emerge after last frost—pre-hardened

Method 2: Controlled Indoor Stratification

1. Seeds in damp paper towel, sealed bag, refrigerate 60-90 days
2. Plant 1 inch deep in pots
3. 75°F under 40-watt shop lights (8 inches above)
4. Germination in weeks; allow 3-6 months for stragglers
5. Transplant at true-leaf stage
6. Harden off 10 days in shade post-frost
7. Plant in full sun

Critical Details

• Keep seeds intact—don't remove red aril or inner seed coat
• Don't dry seeds before stratification
• Fungicide not needed for home-scale propagation
• Label pots carefully if testing multiple methods

Both methods yield viable seedlings. Outdoor method is simpler; indoor method allows monitoring and earlier start.