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What are Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones?
Hardiness Zones, Gardening Zones, Growing Zones and Plant Zones refer to defined geographic regions that can support specific plants, flowers and trees. The zones define a minimum range of temperatures that a plant or tree can survive safely in that zone. The most commonly used Hardiness Zones were defined by the USDA. The USDA provides a hard copy map that displays these zone throughout the US. The last update to this map covers minimum temperatures from 1961 to 1990. An updated map is currently in production, but has not been released yet. Plant Maps provides the only interactive version of the USDA hardiness zone map available on the internet.
Zone Maps for Adjacent States
Iowa Zone MapIndiana Zone Map
Kentucky Zone Map
Missouri Zone Map
Wisconsin Zone Map
Other Interactive Gardening Maps and Data for Illinois
Interactive Illinois Drought Monitor MapIllinois First Frost Date Map
Illinois Last Frost Date Map
Interactive Map of Illinois Drought Conditions
Interactive Map of Illinois Heat Zones
Interactive Map of Illinois Ecoregions
Interactive Maps of Native Illinois Trees and Plants
Interactive Illinois Plantmaps Hardiness Zone Map
Zoom to Major Cities in Illinois
Arlington Heights - USDA Zone 5aAurora - USDA Zone 5aChicago - USDA Zone 5bDecatur - USDA Zone 5bElgin - USDA Zone 5aJoliet - USDA Zone 5aNaperville - USDA Zone 5aPeoria - USDA Zone 5aQuincy - USDA Zone 5bRockford - USDA Zone 4bSpringfield - USDA Zone 5bInteractive Maps of Illinois Native Plants Distribution Areas
Acer negundo - boxelder MapAcer nigrum - black maple MapAcer rubrum - red maple MapAcer saccharinum - silver maple MapAcer saccharum - sugar maple MapAesculus glabra - Ohio buckeye MapAesculus octandra - yellow buckeye MapAesculus pavia - red buckeye MapAlnus serrulata - hazel alder MapAmelanchier arborea - downy serviceberry MapAralia spinosa - devils walkingstick MapAsimina triloba - pawpaw MapBetula nigra - river birch MapBumelia lanuginosa - gum bumelia MapBumelia lycioides - buckthorn bumelia MapCarpinus caroliniana - American hornbeam MapCarya aquatica - water hickory MapCarya cordiformis - bitternut hickory MapCarya glabra - pignut hickory MapCarya illinoensis - pecan MapCarya laciniosa - shellbark hickory MapCarya ovata - shagbark hickory MapCarya texana - black hickory MapCarya tomentosa - mockernut hickory MapCastanea dentata - American chestnut MapCatalpa speciosa - northern catalpa MapCeltis laevigata - sugarberry MapCeltis occidentalis - hackberry MapCeltis tenuifolia - Georgia hackberry MapCephalanthus occidentalis - common buttonbush MapCercis canadensis - eastern redbud MapCladrastis kentukea - yellowwood MapCornus alternifolia - alternate leaf dogwood MapCornus drummondii - roughleaf dogwood MapCornus florida - flowering dogwood MapCornus racemosa - gray dogwood MapCornus stricta - stiffcornel dogwood MapDiospyros virginiana - common persimmon MapEuonymus atropurpureus - eastern wahoo MapFagus grandifolia - American beech MapForestiera acuminata - swamp privet MapFraxinus americana - white ash MapFraxinus pennsylvanica - green ash MapFraxinus profunda - pumpkin ash MapGleditsia aquatica - waterlocust MapGleditsia triacanthos - honeylocust MapGymnocladus dioicus - Kentucky coffeetree MapIlex decidua - possumhaw MapIlex opaca - American holly MapJuglans cinerea - butternut MapJuglans nigra - black walnut MapView More Interactive Maps of Illinois Plants and Trees...