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The USDA Plant Hardiness Zone map indicates that the northern one-third of the state of Oklahoma is in zone 6 and the southern two-thirds is in zone 7. When purchasing roses, these zones should be take into consideration, as some varieties of roses are not hardy enough to survive in zone 6.
Robin Lewis Montanye is a freelance artist, designer and writer. Her articles have appeared in newspapers, national magazines and on several self-help areas of the web. Montanye specializes in gardening articles with information from several universities. She has Internet articles published on Gardenguides.com, eHow.com and Suite101.com.
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