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Boxelder trees reach respectable sizes — up to 60' tall and with a trunk up to 4.5' in diameter (although 3' is more typical). Branching is rapid such that the crown may be wider than the tree is tall. Boxelder is dioecious — trees either produce all male (staminate) or all female (pistillate) flowers. Neither male or female flowers have petals; both consist of drooping, hairy filaments that bear either 5 reddish-brown anthers (male as in the image) or a greenish-white, deeply-forked style (female). The flowers are wind pollinated.

Acer

Acer negundo

boxelder [Blooms: Apr-May]