Zone 4 · winter lows -30°F to -20°F
Summer Bloomers for Zone 4
3.7k summer blooms plants that are hardy through Zone 4, ranked by how many gardeners actually save and grow them.
Most-saved summer blooms plants for Zone 4
#1 most savedButterfly Weed
Asclepias tuberosa
#2 most savedCheyenne Spirit Coneflower
Echinacea purpurea 'Cheyenne Spirit'
#3 most savedButterfly Weed
Asclepias tuberosa 'Gay Butterflies Mix'
Butterfly Kisses Coneflower
Echinacea purpurea 'Butterfly Kisses'
Butterfly Weed Gay Butterflies Milkweed
Asclepias tuberosa 'Gay Butterflies'
Hello Yellow Butterfly Weed
Asclepias tuberosa 'Hello Yellow'
Garden Phlox
Phlox paniculata 'Mix'
Purple Coneflower Rainbow
Echinacea purpurea 'Rainbow'
Butterfly Milkweed
Asclepias x hybrida
Old Farmyard Hollyhock
Alcea rosea 'Old Farmyard'
May Night Sage
Salvia nemorosa 'May Night'
Black-eyed Susan
Rudbeckia hirta 'American Gold Rush'
Garden Phlox 'Rene Duval'
Phlox paniculata 'Rene Duval'
Blanket Flower
Gaillardia x grandiflora 'Mixed Border'
Incrediball Hydrangea
Hydrangea arborescens 'Incrediball'
Cinderella Milkweed
Asclepias incarnata 'Cinderella'
Cheyenne Spirit Coneflower
Echinacea purpurea 'Cheyenne Spirit Mix'
Black-eyed Susan
Rudbeckia hirta 'Autumn Colors Mix'
Common Milkweed
Asclepias syriaca
Purple Coneflower
Echinacea purpurea
Lou Williams New England Aster
Aster novae-angliae 'Lou Williams'
Black-eyed Susan
Rudbeckia fulgida 'Goldsturm'
New England Aster Harringtons Pink
Symphyotrichum novae-angliae 'Harringtons Pink'
Coral Honeysuckle
Lonicera sempervirens 'Coral Honeysuckle'
Showing the 24 most-saved of 3.7k. See all summer bloomers →
Summer Bloomers in Zone 4
What are the best summer blooms plants for Zone 4?
The 24 above are the most-saved summer blooms plants that are also rated hardy through Zone 4. Ranking by real gardeners — not by catalog marketing — surfaces the ones gardeners keep coming back to.
Will these survive Zone 4 winters?
Every plant listed here is rated for Zone 4, where winter lows reach -30°F to -20°F. Site conditions still matter: drainage, wind exposure, and a good layer of mulch make the difference between a rated-hardy plant and a happy one.
How do I keep beds blooming through August?
Rely on long-haul performers (coneflower, rudbeckia, salvia), deadhead early bloomers hard in July, and let ornamental grasses carry texture when flowers pause in extreme heat.
Keep exploring
Summer Bloomers in other zones
Design a Zone 4 bed with these
Snap a photo of your yard and Sow places these plants in it — correctly sized, matched to your zone, with care reminders that follow your real weather.
