6a. Flowers every year (windy urban)
Once established, many plants that flower every year (perennials) can largely be left to do their own thing. They annually manage a good floral season without the need to 'deadhead' (remove spent blooms). In most cases they eventually form large clumps. You can choose to divide these or just leave them alone!
Plants (1449)
Aster x frikartii 'Wunder von Stafa'
Frikart's aster
Aster x herveyi
Hervey's aster
Astilbe 'Amethyst'
Garden astilbe, False spiraea
Astilbe 'Anita Pfeifer'
Garden astilbe, False spiraea
Astilbe 'Aphrodite'
Garden astilbe, False spiraea
Astilbe 'Avalanche'
False goats beard
Astilbe 'Beauty of Ernst'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Brautschleier'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Bremen'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Bressingham Beauty' (x arendsii)
Garden astilbe, Arends astilbe, False spiraea
Astilbe 'Bronce Elegans'
Garden astilbe, False spiraea
Astilbe 'Bumalda' (x arendsii)
Garden astilbe, Arends astilbe, False spiraea
Astilbe 'Carminea'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Cattleya'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Delft Lace'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Deutschland'
Garden astilbe, False spiraea
Astilbe 'Dunkelachs'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Etna'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Federsee' (x arendsii)
Garden astilbe, Arends astilbe, False spiraea
Astilbe 'Feuer'
Garden astilbe, False spiraea
Astilbe 'Fireberry'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Glut'
Garden astilbe, False spiraea
Astilbe 'Happy Day'
False goatsbeard
Astilbe 'Hyazinth'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Inshriach Pink'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Lachskonigin'
Garden astilbe, False spiraea
Astilbe 'Mainz'
Garden astilbe, False spiraea
Astilbe 'Perfect Day'
False goatsbeard
Astilbe 'Raspberry'
False goatsbeard
Astilbe 'Red Sentinel'
Garden astilbe, False spiraea
Astilbe 'Rheinland'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Rosa Perle'
Garden astilbe, Arends astilbe, False spiraea
Astilbe 'Rotlicht'
Garden astilbe, False spiraea
Astilbe 'Spinell'
Garden astilbe, False spiraea
Astilbe 'Venus'
Garden astilbe, False spiraea
Astilbe 'W.E. Gladstone'
Garden astilbe, False spiraea
Astilbe 'Washington' (japonica hybrid)
Japanese astilbe
Astilbe 'Weisse Gloria'
Garden astilbe, False spiraea
Astilbe 'Whiteberry'
False goatsbeard
Astilbe 'Willie Buchanan'
Garden astilbe, False spiraea
Astilbe 'Younique Lilac'
False goatsbeard, False bucksbear, False spiraea
Astilbe 'Younique Salmon'
False goatsbeard, False bucksbear, False spiraea
Astilbe chinensis
Chinese astilbe, False goatsbeard, False bucksbear, False spiraea
Astilbe chinensis var. davidii
Chinese astilbe
Astilbe chinensis var. pumila
Chinese astilbe
Astilbe chinensis var. tacquetii
Chinese astilbe, False goatsbeard, False bucksbear, False spiraea
Astilbe chinensis var. taquetii 'Purpurlanze'
Chinese astilbe
Astilbe chinensis var. taquetii 'Superba'
Chinese astilbe