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New Plant Hardiness Zone Map Shows Temperature Shifts USDA's Agricultural Research Service has released a new plant hardiness zone map; the first one in twenty two years. Audio Podcast: (1 min. 55 sec.) mp4 | wmv | Transcript |
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New Plant Hardiness Zone Map Shows Temperature Shifts USDA's Agricultural Research Service has released a new plant hardiness zone map; the first one in twenty two years. Audio Podcast: (1 min. 55 sec.) mp4 | wmv | Transcript |