Box elder grows quickly to provide summer shade. Its surface roots may pose a threat to foundations and sidewalks if planted too close. Requires moderate to regular summer watering, but can become drought tolerant with age. Plant Characteristics Species Name Acer negundo Common Name Box Elder Plant Type Trees Height by Width 50ft. x 50ft. Flower Color Pink, Magenta, Rose Flowering Months March, April Sun Exposure Inland-Part Sun Water Requirement Moderate Soil Type Loam, medium draining Sowing Season Fall/Winter Sowing Difficulty Level* Moderate Sowing Pretreatment Scarification * Sowing difficulty levels: Easy: Sow in-ground or in pots with simple or no pretreatment Moderate: Sow in-ground or in pots with pretreatment; may produce staggered germination Difficult: Sow in pots with pretreatment and stratification; may produce staggered germination