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Garden Notes
Hardiness

Horticulture expert Dr. Lelia Kelly defines the gardening term hardiness. Usually this refers to cold hardiness or the ability for a plant to withstand cold temperatures. USDA plant zones are based on how cold it gets in the winter which then determines how hardy plants need to be if planted in that zone. A plant that is only hardy to 10 degrees will die if the temperature gets lower. Another kind of hardiness is heat hardiness which determines how hot of temperatures the plant can tolerate.

Related Videos: 
H - Garden Glossary
Protecting Plants From Frost

Related Resources:
Plant Growth Factors: Temperature
USDA Plant Hardiness Zone Map
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  • Home
  • Watch
    • TV Schedule
    • Full Episodes Online
    • How-to and Informational
    • Questions and Answers
    • This Week in the Garden
    • Garden Notes
  • Garden Topic Collections
    • Apple Trees: How-to and Information
    • Peach Trees: How-to and Information
    • Tomatoes: How-to and Information
    • Square Foot Garden Blog
  • Resources
    • Soil Testing
    • Extension Publications
    • Gardening Resources
    • Blogs
    • Organic Gardening
    • Articles
    • Privacy
  • Guests
  • Contact Us
    • Ask a Gardening Gardening Question
  • Search