Echinacea (coneflower) is a beautiful native perennial that supports pollinators and has medicinal uses.
Zone 3B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.
Good companions: black-eyed Susans, grasses, lavender, bee balm
Avoid planting near: none — echinacea is a great garden citizen
Blooms first year from transplant, second from seed; leave some for wildlife
USDA Hardiness Zone 3B has an average last spring frost around May 15 and first fall frost around Sep 15. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.