10 Frost-Tolerant Flowers That Keep Blooming Through the Cold

The summer wind-down can be tough for gardeners, especially for flower lovers. After a brilliant season of colorful blooms, the short window of autumn color and the dreary stretch of winter that follows can feel like a letdown. But the garden doesn't have to go quiet just because the temperature drops. A specific group of cold-hardy blooms shrugs off that first freeze without missing a beat, and a few even deepen in color or scent because of it. Here's a list of 10 hardy blooms worth adding to any garden this season.

Pansies come in both mounding and trailing forms. They are a true cool-season champion, hardy to zones 6 through 9. The blooms hold their color through repeated light frosts and often push through a dusting of snow.

Violas are cousins of pansies and produce similar, but smaller blooms. Although hardy in the same zones, 6 through 9, they outlast pansies once sustained cold sets in. Their compact, low-growing habit fits neatly into gaps left by other plants. Plant violas between stepping stones or along the edge of a raised bed planted with flowering kale, another cold-hardy standout.

Commonly known as Sweet William, dianthus is a short-lived perennial, but mostly grown as a biennial. Hardy to zones 3 through 9, it has a clove-like fragrance that intensifies as temperatures drop. Place dianthus near a walkway or entrance, paired with low-growing alyssum, where the fragrance can reach anyone passing by.

Although technically not flowers, both ornamental cabbages and kale offer seasonal color that rivals the brightest blooms. They are typically grown only as cool-season annuals in most regions. These hardy plants can tolerate temperatures down to 5°F once established and are hardy across zones 2 through 11. Their leaves deepen from green to shades of purple and pink after the first frost, and their tight rosette shape holds its structure through winter. The two share the same growing needs and pair naturally in a single planting.

These colorful flowers are hardy in zones 7 through 10 as perennials and are grown as cool-season annuals elsewhere. They bounce back quickly after a hard frost, which makes them a cool-season must-have. Their upright spikes add vertical structure that low-growing pansies and violas don't provide on their own. Place snapdragons as mid-height filler between taller garden mums and a low border of sweet alyssum.

Chrysanthemums are perhaps the most popular fall bloom. They are hardy in zones 5 through 9, and most often grown as annuals. Their dense, rounded form gives fall containers instant structure, and the bloom window stretches well into late fall in most climates. Cluster mums near the front door alongside flowering kale for a classic fall-into-winter welcome.

Fall-blooming camellias (Camellia sasanqua) produce glossy evergreen foliage that backs up the flowers once other shrubs go bare for the season. A related species, Camellia japonica, offers similar cold-hardy blooms later in winter. Hardy in zones 7 through 9, camellias open their blooms from early fall through early winter, filling a gap most flowering shrubs leave empty. Plant against a south-facing wall, underplanted with hellebores, for extra reflected warmth through winter.

Hellebores are hardy perennials that easily survive in zones 4 through 9. They open in late winter, sometimes pushing through a layer of snow before anything else in the garden stirs. The nodding blooms face downward, a habit that protects the flower's center from cold rain and frost. Although these beauties won't reward gardeners with blooms in the fall, they're worth the wait. Plant beneath deciduous trees or camellias, where bare winter branches let in enough light for blooming.

Winter jasmine produces bright yellow flowers on bare green stems well before spring arrives, often as early as December in milder zones. They are hardy to zones 6 through 10. Unlike most jasmine varieties, this one carries no fragrance, but the early color more than makes up for it. Train winter jasmine along a fence or trellis, underplanted with violas, for a cascading effect from top to bottom.