Growing Japanese Maples from Seed: Patience, Stratification, and Squirrel Defense

Those winged seed pods (samaras) on your laceleaf Japanese maple are tempting—but growing maples from seed is a lesson in delayed gratification. Unlike vegetables, maple seeds germinate sporadically over two years and require a cold, moist stratification period.

Two Methods Worth Trying

Method 1: Outdoor Sowing (Nature Does the Work)

1. Collect fresh seeds in autumn
2. Sow ½ inch deep in a prepared bed
3. Cover with 1-inch mesh chicken wire (squirrels and voles love maple seeds)
4. Mark the spot—seedlings may appear next spring or the one after

Method 2: Refrigerator Stratification (Controlled)

1. Place 25 seeds in a resealable bag
2. If dry, add a few drops of water
3. Refrigerate in crisper drawer for 90 days
4. Check at 90 days: plant any with emerging rootlets outdoors in April
5. Re-cover with chicken wire

What to Expect

Seedlings won't be clones of the parent—laceleaf traits may not come true. But you'll get genetically diverse, often vigorous trees with unique character. For a patient gardener, it's one of the most rewarding propagation projects imaginable.