One of the finest for Bonsai. Acer palmatum is very ornamental with red and gold autumn foliage and relatively quick to display results.
Sow seeds in trays, pots, etc of good seed compost in a propagator or warm place to maintain an optimum temperature of 65-70F (18-20C). Sowing Depth: ¼ Inch (6 mm). Sow seeds at any time of year. After sowing, seal the container inside a polythene bag to ensure a humid atmosphere, leave at 70-75F (20-25C) for 6 weeks, then pre-chill for 8 weeks. After this, gradually raise the temperature to 55F (13C).
Transplant seedlings when large enough to handle into 7.5cm (3in) pots. Grow on in a cold frame and plant out the following spring or autumn in a sheltered part of the garden and grow on for 1-3 years before planting into final position in a slightly shady, sheltered spot in moist, free draining, lime-free soil.