Native wildflower for boggy soils, but also adaptable perennial for average garden conditions and soils.
Usually grows to 2-3' of height x 1-2' of width. Clumping, long-lived plant with stiff upright growth.
Quite large pink or pink-purple flowers (sometimes even white) from July to early September attract hummingbirds and butterflies, but the main pollinators are bumblebees.
Full sun (with enough moisture), dappled sun to half shade are optimal. Turtlehead likes organic rich and more fertile soil, but it grows well in pure clay and in waterlogged and poorly drained soils.
Medium moist soils, wet to saturated soils.
Turtlehead tolerates shorter periods of drought, but in drought may suffer from powdery mildew.
Plants will adapt to lighter shade, but may become floppy and may need staking or pinching back in the middle of the spring to support more compact growth.
Hardy in zones 5 to 9. Naturally grows in moist woods, swamps, floodplains, stream margins or alluvial forests, native to southeastern and part of eastern USA and Midwest, see the distribution on BONAP map.
Deer and rabbits avoid it for it's bitter leaves.
Best in flower beds with medium moist soil, rain gardens, woodland gardens, pond, water and bog gardens, pollinator gardens or deer resistant plantings or for erosion control.
Good cut flower.
Can be combined with many perennial with the medium-moist to slightly moist soil needs like Baptisia, Echinacea purpurea, Geum, Geranium, Hemerocallis, Helianthus, Eupatorium, Iiris sibirica, Iris x lousiana, Iris virginia, Iris versicolor, Lobelia, Rudbeckia, tall Phloxes, bigger grasses like Calamagrostis or Panicum virgatum (and it's cultivars).
In half shade or shade garden looks good with Hosta, Polygonatum, Mertensia, Hakonechloa, Carex and many others.
Pot size : square 3.5" x 4" deep perennial pot
Picture copyright : US Perennials nursery