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USDA Hardiness Planting Zones
To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.
- If the coldest winter temperature expected in your area is -15�F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
- If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).
Dianthus | Sweet William
Dianthus plants (known as garden or cheddar pinks) are enjoyed for their silvery-green foliage and showy, fragrant flowers. Most Dianthus varieties bloom in some variation of red, white, pink and bi-colored combinations. These perennial plants are appropriate for rock gardens and the water-wise border. The flowers are wonderful for perfumed bouquets, blooming in late spring or summer. Dianthus are cold hardy and heat tolerant.
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