(image from google images)
Common name: gooseneck loosestrife
Size, form, texture: height 2-3 ft, spread 2-4 ft, upright rhizomatous, clump forming perennial, colony forming.
Hardiness, origin, native ecology: grown well in average, well drained soil in full sun to part shade, likes moist rich soil in sunny location, less aggressive if grown in drier soil with part shade.
Bud, foliage, flower and fruit characteristics: blooms late spring to early summer, racemes curve like goose neck giving it its name, many tiny white flowers on terminal racemes, ovate, lancolate medium green foliage. Tip of flower ascends, flowers for fairly long.
Cultural and maintenance requirements and appropriate uses in the landscape: can be aggressive, used often as a cut flower. Creates movement in the landscape.