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Understanding Climate Impact on Horticulture: USDA Plant Hardiness Zones & Climatic Regions

This chapter explores the influence of climate on horticultural geography, focusing on tropical, subtropical, arid, semi-arid, Mediterranean, and temperate climatic regions. It discusses temperature zones, criteria for the distribution of selected fruit crops, and the essentials of the USDA Plant Hardiness Zone Map, including how minimum temperatures shape plant hardiness. Microclimates' role in horticulture is examined alongside the ecological implications of climatic distributions, providing an in-depth understanding of how climate affects plant ecosystems around the world.

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Understanding Climate Impact on Horticulture: USDA Plant Hardiness Zones & Climatic Regions

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  1. Chap 19. Horticultural Geography Climate Climatic Regions Tropical and Subtropical Dry Climate (Arid, Semi-Arid) Temperature Zone Distribution of Selected Fruit Crops Plant Hardiness Zones Definition USDA Plant Hardiness Zone Map Arnold Arboretum Map Floradapt Map based on Minimum Temperatues

  2. Climate • Climate if affected by: a. Latitude b. Circulation of atmosphere and ocean current B. Components: a. Temperature b. Moisture (Precipitation) c. Light C. Microclimate: a. The climate of ‘small’ area b. Location vs. site: - Location: geographic, climatic area - Site: microclimate within a location D. Ecology: a. Study of life forms in relation to environment b. Climate influences distribution of horticultural crops and industry

  3. 2. Climatic Regions A.Tropical Regions B. Subtropical Regions C. Dry Climate D. Mediterranean E. Temperate Zone F. Mountain (Tundra)

  4. Climatic Zones of the World

  5. Tropical and Subtropical Climate • a. Hot and wet all year round • b. Low light under tree canopy

  6. B. Dry Climate a. Arid regions b. Semi-arid regions

  7. Semi-Arid Climate - Low annual precipitation - Sonoran Desert of the Southwest

  8. C. Mediterranean Climate A. Climate: Mild winters Dry hot summers B. Regions: Italy, Southern France, Spain Coastal California

  9. D. Temperate Zone Climate - Deciduous trees and shrubs - Distinctive four seasons

  10. E. Mountain Climate (Tundra) - Very cold year round

  11. USDA Plant Hardiness Zone Map

  12. New USDA Plant Hardiness Map

  13. Plant Hardiness Zone MapNorth Dakota and Region

  14. Last Frost DatesBased on Average Frost Dates

  15. Vegetation Map of the World

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