Norway maple is a popular, fast-growing, deciduous shade tree that is native to regions across Europe. These trees have dense rounded canopies and large leaves that are medium to dark green in the summer and turn pale yellow, yellow or yellow-green, rarely red, in the fall.
This tree is tolerant of a wide range of sites and conditions but does best in locations with full sun to part shade and well-drained, average soil. There are two caveats to planting a Norway maple; it tends to self-seed aggressively and casts dense shade. Consequently, it should be planted away from cultivated garden and natural areas. This tough and adaptable tree do well in urban settings and if growing conditions are optimal can become spectacular specimens. are many cultivars of Norway maple that vary in habit and foliage color. The ever-popular 'Crimson King' is a widely planted selection with dark purple foliage.
Genus - Acer
Species - Platanoides
Common name - Norway Maple
Pre-Treatment - Required
Hardiness zones - 4 - 7
Height - 40'-50' / 12.2m - 15m
Spread - 30'-40' / 9.1m - 12m
Plant type - Medium Tree
Vegetation type - Deciduous
Exposure - Full Sun, Partial Sun, Partial Shade
Growth rate - Fast
Soil PH - Acidic, Neutral, Alkaline
Soil type - Clay, Loam, Sand, Well Drained
Water requirements - Average Water
Care level - Easy
Landscape uses - Feature Plant, Shade Trees, Street Trees
Germination rate - 90%
Bloom season - Early Spring, Spring
Leaf / Flower color - Green, Dark green / Lemon Yellow, Yellow Green, Chartreuse
|1. Start the cold stratification process one month before the beginning of spring.
2. Place the seeds in a glass bowl and cover with room temperature water. Allow the seeds to soak for a minimum of 24 hours but no longer than 48 hours.
3. Hold a handful of sterile peat planting medium under a running faucet until the peat is soaked. Squeeze most of the water out of the peat, leaving it moist but not soggy. Place the moist peat into a zip-lock plastic bag.
4. Remove the seeds from the bowl of water and rinse them off under clean running water. Place up to three seeds into the plastic bag containing the peat. Use more peat and plastic bags if you want to germinate more than three seeds.
5. Push the seeds into the peat and seal the plastic bag. Shake the bag to distribute the peat so that it covers the seeds completely. The seeds must be buried in the moist peat in order to germinate.
6. Place the sealed bag in the bottom of the refrigerator. This will serve as the cold stratification. The seeds need to be kept at 34 to 46 degrees Fahrenheit for a minimum of 35 days, but not longer than 90 days.
7. Open the plastic bag periodically to make sure the peat is still moist. Add water as needed to restore the moisture.
8. Check the weather forecast after 35 days. You can plant the seeds outdoors if all danger of frost has passed. You can wait up to 55 more days, if there is still a possibility of frost and plant the seeds as late as early summer.
9. Plant the seeds by removing them from the peat and rinsing them with clean water. Bury the seeds 1/4 to 1 inch deep into the soil, ensuring that the seeds are covered. Keep the soil moist until the seeds sprout.