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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).
Caryopteris | Blue Mist Spirea
Blue Mist Spirea (Caryopteris clandonensis), will add a heavenly hue of blue to your garden, from late summer through fall. Sometimes known as Bluebeard, Blue Mist Spirea has a profusion of tiny blue flowers that are attractive to butterflies. Caryopteris is long-blooming and has fragrant foliage that deters deer and rabbits. Plant this deciduous shrub alone or en mass as a backdrop for lower-growing perennials or as a hedge.
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