The United States Department of Agriculture lists 10 growing zone allot to their mediocre winter minimum temperature . The USDA works hardiness map lists zone 6 wintertime temperatures as -10 to 0 degrees F. Zone 6 stretches from region of Arizona through the mid - Rebecca West to Maine . The below - freezing winter weather atmospheric condition of this zone create specific indigence for plant life and tree diagram . Many plants and flower grow well in geographical zone 6 .
Annuals
Annuals are plant which acquire , bloom and die in one grow season . Annuals that do well when grown in planting zone 6 include ageratum , calendula , cosmos , dahlia , dianthus , petunias , fuchsia , lobelia and old maid . Salvia and verbena develop in a blanket range of colors from dark purple to red , pinkish and low-cal blue . Verbenas grow well as give ear basket flowers in geographical zone 6 .
Perennials
The repeated sunflower form Low Down Dwarf is unfearing in geographical zone 6 . Other perennial capable of over - wintering in miserable temperatures are coreopsis , yarrow , Tomato Soup coneflower , bellflower , delphinium , genus Dianthus , geranium and false hellebore . Vinca and viola both have modest empurpled or blue flowers and are often used for flower border edging . Japanese primrose bloom bunch of small pink flower on 10 - column inch stems and are used as delimitation flora or cut flowers . They also do well in the wraith .
Bulbs
Tulips grow well in dusty winters and provide a spectacular carpet of blooms in the springtime . Other electric light that thrive in zone 6 are all the sort of iris , tuberous begonia , narcissus , hyacinth , gladiola , crocus , canna and caladium . Caladium does well as a stack planting in a shaded country . crocus are frequently the first bulb to bloom after wintertime .
Shrubs
azalea are popular in all country of zone 6 because the cold winters avail them produce strong growth and flowers in spring . Popular form of azalea include Appalachian Trail , White Lightning and Flame . American Beautyberry has large clump of bright lavender berries and grows well when tame in a wooded area . Lilacs , hummingbird industrial plant and hydrangea , along with crepe myrtle , are also democratic shrubs for zone 6 .
Vines
efflorescence vines develop in zone 6 include the popular trumpet vine , which can reach a height and distance up to 30 metrical unit . Trumpet vine flowers are 2 ½ inches prospicient and flower in colors from Orange River to shades of Bolshevik . Honeysuckle has yellow , fragrant blooms and attractive green - purpleness foliage . Jasmine is a very adaptable vine for zone 6 growing . It provides big hatful of very fragrant flowers from February through March .
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