Dense trees. Stately good looks, moderate growth rate. All have irregularly heart-shaped leaves and small, fragrant, yellowish-white flowers in drooping clusters in late spring, early summer. Flowers develop into nutlets, each with an attached papery bract. Best in deep, rich,moist soil. In cold-winter areas, fall color varies from negligible to good yellow. Young trees need shaping, older ones only corrective pruning. Aphids can cause honeydew, which drips disagreeably and encourages sooty mold.
From Europe. Dense pyramid to 30–50 ft. tall and 15–30 ft.wide. Leaves 1/2 –3 in. long and as wide (or wider), dark green above, silvery beneath. Excellent lawn or street tree. Given room to develop its crown, it can be a fine patio shade tree (but expect bees in flowering season). Can be sheared into hedges. Very tolerant of city conditions.
This popular variety has white blooms with a pale pink blush.
From southern Europe. To 8 10 in. high, spreading fast by underground rootstocks and fleshy...
Native to eastern North America. To 4 ft. tall, 3 ft. wide, with full clusters of bright blue-violet f...