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This is the new hardiness zone map. Listed are the average minimum yearly low temperatures, not the the coldest temperatures ever recorded. A plant not fully dormant can be damaged at much warmer temperatures. Other factors, including chilling requirements and heat units, are critical to plant performance within a climate zone. These are the zones listed for each variety throughout the catalog!



What are Zone Maps?

Gardeners need a way to compare their garden climates with the climate where a plant is known to grow well. That's why climate zone maps were created. Zone maps are tools that show where various permanent landscape plants can adapt. If you want a shrub, perennial, or tree to survive and grow year after year, the plant must tolerate year-round conditions in your area, such as the lowest and highest temperatures and the amount and distribution of rainfall.



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