Spiraea tomentosa hardhack; steeplebush Rosaceae SPTO; Bx, pb, wv; Q, i, j; K; R, bd, lp, ro, h, k, sv;

Spiraea tomentosa.plants.usda.gov

Spiraea tomentosa.© Nelson DeBarros.plants.usda.gov (Accessed 5/2014).

Spiraea tomentosa is a shrub to 1 m tall; twigs wooly, delicate; colonial from root sprouts. 

Leaves alternate, to 5 cm long, egg-shaped to lance-shaped, pale or rusty wooly below, veins conspicuous. 

Flowers pink, 0.3 cm wide; inflorescence dense, terminal, to 15 cm long, branched, narrow; blooms July-Sept. 

Fruit small hairy capsule, brown, persistent through winter; seeds very small, linear. 

Wetland status: FACW. 

Frequency in NYC: Infrequent. 

Origin: Native. 

Habitat: Undisturbed open marshes, and pond edges. Prefers soil pH 4.5-7 (USDA, NRCS 2010), tolerant of flooding, drought, soil compaction. Intolerant of salt, shade (Hightshoe 1988). Affected by the same insects and pathogens as S. alba