Collect the winged seeds (samaras) when they fall and dry. Plant ½ inch deep in good potting soil, keep moist. Seal pot in a plastic bag and refrigerate 90 days for cold stratification. Then move to warm, sunny spot; germination in 2 weeks.
Transplant seedlings at 3–4 inches to individual pots. Harden off 10 days in shade after frost danger passes, then plant in full sun.
Stopping Maple Seedlings in Lawn
Storing Rose of Sharon, Wisteria, and Hibiscus Seeds Over Winter
Propagating Japanese Maple (Acer palmatum) from Seed in the UK
Beaver Damage to Dwarf Japanese Maple: Girdling Assessment
Germinating Japanese Maple (Acer palmatum) Seeds: A Step-by-Step Stratification Guide
Harvesting Drosera Capensis Seeds: Timing and Technique
Growing Japanese Maples from Seed: Patience, Stratification, and Squirrel Defense
New Japanese Maple Brown Leaf Spots: Phyllosticta Leaf Spot
Japanese Maple Leaf Scorch and Transplant Shock: Same Symptoms, Different Causes
Japanese Maple Leaf Spot: Mancozeb or Bordeaux
Japanese Maple Leaf Spots: Phyllosticta Leaf Spot Diagnosis and Management
Harvesting Wisteria and Yucca Seeds: Timing and Identification
Japanese Maple Leaf Spots: Phyllosticta Fungus — Mostly Cosmetic
Why Deadhead Lacecap Hydrangea? Energy for Blooms, Not Seeds
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