Acer negundo is a species of maple native to North America. In Canada it is commonly known as Manitoba maple and occasionally as elf maple. Box elder, boxelder maple, ash-leaved maple, and maple ash are its most common names in the United States; in the United Kingdom and Ireland it is also known as ashleaf maple.
Germination: Soak the seeds 24 to 48 hours in room temperature water. Cold stratify the seeds for approximately 3 months at 1° to 8 °C (~34° to ~46° F)—the optimum temperature for germination appears to be 1° C (34° F). After the stratification period, you can plant the seeds in the ground or in pots to be transplanted later to the area you choose.