
Zone 3 (-40°F to -30°F)
Very ColdExtremely hardy flowers that survive harsh winters and short growing seasons in northern regions.
Growing Season:90-120 days
Zone Characteristics:
Very short seasonExtreme cold toleranceLimited variety
Best Flowers:
• Siberian Iris
• Wild Bergamot
• Purple Coneflower
• Black-eyed Susan
Very Cold Climate
23,000/mo

Zone 4 (-30°F to -20°F)
ColdCold-hardy perennials and annuals perfect for northern gardens with moderate growing seasons.
Growing Season:120-150 days
Zone Characteristics:
Moderate seasonGood cold toleranceSpring bulbs excel
Best Flowers:
• Lily of the Valley
• Peonies
• Delphiniums
• Hardy Geraniums
Cold Climate
34,000/mo

Zone 5 (-20°F to -10°F)
CoolBalanced growing conditions supporting a wide variety of both hardy and tender flowers.
Growing Season:150-180 days
Zone Characteristics:
Good balanceWide variety possibleExtended season
Best Flowers:
• Roses
• Lilies
• Clematis
• Hostas
Cool Climate
45,000/mo

Zone 6 (-10°F to 0°F)
ModerateIdeal conditions for most flower varieties with long growing seasons and mild winters.
Growing Season:180-210 days
Zone Characteristics:
Long seasonMost varieties thriveMild winters
Best Flowers:
• Dahlias
• Calla Lilies
• Hydrangeas
• Lavender
Moderate Climate
56,000/mo

Zone 7 (0°F to 10°F)
MildExcellent conditions for shade-loving flowers that thrive in filtered light and woodland settings.
Growing Season:210-240 days
Zone Characteristics:
Very long seasonHeat and cold toleranceYear-round interest
Best Flowers:
• Camellias
• Azaleas
• Magnolias
• Japanese Maples
Mild Climate
67,000/mo

Zone 8 (10°F to 20°F)
WarmWarm climate gardening with minimal frost and drought-tolerant flower varieties.
Growing Season:240-270 days
Zone Characteristics:
Minimal frostHeat tolerance neededLong blooms
Best Flowers:
• Bougainvillea
• Hibiscus
• Oleander
• Crape Myrtle
Warm Climate
78,000/mo
