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)
Astilbe Elizabeth Bloom = 'Eliblo'
False goatsbeard, False bucksbear, False spiraea
Astilbe simplicifolia 'Darwin's Snow Sprite'
Star astilbe, False goatsbeard, False bucksbear, False spiraea
Astilbe simplicifolia 'Rosea'
Star astilbe, Simple leaved astilbe
Astilbe thunbergii
Thunberg's astilbe
Astilbe x arendsii
Garden astilbe, Arends astilbe, False spiraea
Astilbe x crispa 'Lilliput'
Crisped astilbe
Astilbe x crispa 'Perkeo'
Crisped astilbe
Astilbe Younique Pink = 'Verspink'
False goatsbeard, False bucksbear, False spiraea
Astilbe Younique White = 'Verswhire'
False goatsbeard, False bucksbear, False spiraea
Astrantia 'Buckland'
Masterwort
Astrantia 'Ruby Star'
Masterwort
Astrantia 'Star of Treasure'
Masterwort
Astrantia 'Superstar'
Greater masterwort
Astrantia major
Greater masterwort
Astrantia major 'Claret'
Greater masterwort
Astrantia major 'Florence'
Greater masterwort
Astrantia major 'Lars'
Greater masterwort
Astrantia major 'Million Stars'
Greater masterwort
Astrantia major 'Penny's Pink'
Greater masterwort
Astrantia major 'Pink Pride'
Greater masterwort
Astrantia major 'Primadonna'
Greater masterwort
Astrantia major 'Rosensinfonie'
Greater masterwort
Astrantia major 'Rubra'
Greater masterwort
Astrantia major 'Ruby Wedding'
Greater masterwort
Astrantia major 'Sparkling Stars Diamond'
Masterwort
Astrantia major 'Star of Billion'
Greater masterwort
Astrantia major 'Sunningdale Variegated'
Greater masterwort
Astrantia major 'Venice'
Greater masterwort
Astrantia major Candy = 'Trevandy'
Greater masterwort
Astrantia major Eye Catcher = 'Trevatcher'
Greater masterwort
Astrantia major Gill Richardson Group
Greater masterwort
Astrantia major Pearlescent Pink = 'Trevcent'
Greater masterwort
Astrantia major Sparkling Stars White = 'Westarwit'
Masterwort
Astrantia major subsp. involucrata 'Shaggy'
Greater masterwort
Astrantia major var. rosea
Greater masterwort
Astrantia maxima
Giant masterwort
Calamintha nepeta
Lesser calamint, Calamint savory, Savory calamint, Mountain mint, Mountain balm
Calamintha nepeta subsp. glandulosa 'White Cloud'
Lesser calamint, Calamint savory, Savory calamint, Mountain mint, Mountain balm
Calamintha nepeta subsp. nepeta
Lesser calamint, Calamint savory, Savory calamint, Mountain mint, Mountain balm
Centaurea 'Amethyst on Ice'
Knapweed, Star thistle
Centaurea 'Caramia'
Knapweed, Star thistle
Centaurea 'Jordy'
Knapweed
Centaurea bella
Beautiful knapweed
Centaurea dealbata
Perennial cornflower, Persian cornflower, Whitewash cornflower
Centaurea dealbata 'Steenbergii'
Perennial cornflower, Persian cornflower, Whitewash cornflower
Centaurea glastifolia
Woad-leaved knapweed
Centaurea macrocephala
Great golden knapweed, Globe centaurea
Centaurea montana 'Alba'
Mountain knapweed, Perennial cornflower, Mountain bluet, Perennial bachelors buttons