Perennials
Idaho’s climate varies across the state, but it generally experiences cold winters and hot, dry summers. Here’s a list of perennial flowers that are well-suited for growing in Idaho:
Columbine Aquilegia
USDA Hardiness: 3 to 9
Blooms: Spring to Summer
Height: 6-24″
Growth Conditions: grows well in full sun and part shade, drought tolerant
Uses: plant beds and borders
Delphinium Delphinium
USDA Hardiness: 3 to 7
Blooms: Early to mid summer, may repeat in early fall Size: 5-6′ tall, space 24″ apart
Growth Conditions: grows well in full sun and part shade, stake for best results Uses: cut flowers, center of garden
Penstemon
USDA Hardiness: 4
Blooms: Early Summer
Size: 3′ x 3′
Growth Conditions: full sun to pt. shade, drought tolerant
Uses: plant beds and borders, mass plantings, showy
Bleeding Heart Dicentra spectabilis
USDA Hardiness: 3 to 9
Blooms: Early Spring
Size: 26-30″ x 26-30″
Growth Conditions: part shade Uses: plant beds and borders, rock gardens, ground cover
Blanket Flower Gaillardia
USDA Hardiness: 3
Blooms: Summer to Early Fall
Size: 36″ x 24″
Growth Conditions: full sun
Uses: plant beds and borders, meadows, containers
Coneflower Echinacea
USDA Hardiness: 4
Blooms: Late Spring to Late Summer
Size: 18-20″ x 22-24″
Growth Conditions: full sun
Uses: plant in borders, containers, or masses, herbaceous
Rudbeckia
USDA Hardiness: 3
Blooms: Summer to Frost
Size: 3′ x 2′
Growth Conditions: full sun, drought tolerant, easy care
Uses: plant beds and borders, upright and sturdy
Liatris
USDA Hardiness: 3
Blooms: July to September
Size: 2′ x 1′
Growth Conditions: full sun
Uses: plant in borders, backgrounds, and meadows, excellent cut flower
Aster
USDA Hardiness: 4
Blooms: Late Summer to Frost
Size: 24″ x 24″
Growth Conditions: full sun
Uses: plant beds, containers, accents
Peony Paeonia
USDA Hardiness: 3 to 8
Blooms: Spring to Summer
Size: 3′ x 3-4′
Growth Conditions: full sun, well draining soil
Uses: beds, borders, containers, cutting garden, cottage garden
Autumn Joy Hylotelphium
USDA Hardiness: 3 to 9
Blooms: Fall
Size: 15-24″ x 15-24″
Growth Conditions: Full sun, drought tolerant, well drained soil
Uses: rock gardens, path and border edging, mass planting, cut and dried flowers
Remember to consider your specific location within Idaho, as microclimates and variations in elevation can affect the growing conditions. Additionally, it’s important to check the specific growing requirements for each plant and adjust your care accordingly.
