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Aug 162012
 

AsterSome annual flowers can withstand hot, dry growing conditions and still provide attractive foliage and/or flowers. These plants may find their best use in the warm valleys of southwestern Idaho, though they will grow well in many other places in the state.

Common Name Scientific Name Regional Adaptation
Amaranth, (Love Lies Bleeding, Joseph’s Coat) Amaranthus spp. N, SW, SC, SE, HA
California Poppy Eschscholzia californica N, SW, SC, SE, HA
Celosia (Cockscomb) Celosia cristata N, SW, SC, SE
Dusty Miller Senecio cineraria N, SW, SC, SE, HA
Four-O’clock Mirabilis jalapa N, SW, SC, SE
Gaillardia (Annual Blanket Flower) Gaillardia pulchella N, SW, SC, SE, HA
Gazania Gazania rigeas N, SW, SC, SE, HA
Larkspur Delphinium ajacis N, SW, SC, SE, HA
Moss Rose Portulaca grandiflora SW, SC, SE
Phlox Phlox drummondii N, SW, SC, SE, HA
Rudbeckia Rudbeckia hirta N, SW, SC, SE, HA
Salvia Salvia spp. N, SW, SC, SE, HA
Sunflower (ornamental) Helianthus annuus N, SW, SC, SE, HA
Zinnia Zinnia elegans N, SW, SC, SE

Key to regional adaptation notes:
N = Northern Idaho valley locations in USDA zones 5 & 6, Moscow to Sandpoint.
SE = Southeastern Idaho valley locations in USDA zones 3 & 4 from Rexburg to Pocatello. SC = South-central Idaho Magic Valley locations in USDA zones 4 & 5, Burley and Twin Falls.
SW = Southwestern Idaho Treasure Valley locations in USDA zones 5 & 6, Boise area (also Lewiston).
HA = High altitude (>5,000 ft) areas of central, southeastern Idaho and similar locations elsewhere.

 August 16, 2012