Salvia dorrii v. incana Robusta

Robust Gray Great Basin Sage

Robusta is a select form of Salvia dorrii v. incana chosen for its large size, attractive foliage and a massive display of sky-blue flowers in late spring. Easy to grow, the shrub has silver evergreen foliage and is easily grown in any well-drained soil.
Zones 5 - 8
Advantages
Deer Resistant
Attract Butterflies
Attract Hummingbirds
Bee Friendly
Rabbit Resistant
Native
Evergreen
Light Requirements
Full Sun
Annual Rainfall
Less than 10"
10 to 20"
20 to 30"
Mature Plant Size 16-18" tall 18-24" wide
Bloom Time Late spring to early summer
Size No
SKU HC016207

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).

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Out of stock
SKU
HC016207

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Details
Variety incana, originally collected from the Cascade Mts. of Washington, is a distinct form of this wide spread western native shrub. After growing it alongside other forms of Salvia dorrii, chief horticulturist David Salman, found ssp. incana to be notable for its upright growth habit, large, pure silver leaves and sky-blue flowers held in silver calyxes. A late spring bloomer, the plant really stands out when planted with cacti and other green leafed xeric plants. Highly recommended for gardeners plagued by deer and other browsing animals. (cutting propagated) Javelina resistant
More Information
SKU
HC016207
Ships To Canada
No
Common Name
Robust Gray Great Basin Sage
Botanical Name
Salvia dorrii v. incana Robusta
Zones
5, 6, 7, 8
Light Requirements
Full Sun
Flower Color
Blue
Height
18 inches
Mature Height
16-18" tall
Mature Spread
18-24" wide
Bloom Time
Late Spring - Early Summer, Early - Mid Summer, Mid - Late Summer
Bloom Time
Late spring to early summer
Ships As
Potted Plant
Planting Time
Spring / Summer, Fall
Soil Type
Sandy Soil, Average Soil, Low Fertility Soil, Well-Drained Soil
Soil Moisture
Very Drought Resistant / Very Waterwise
Amount Of Rain
Less than 10", 10 to 20", 20 to 30"
Advantages
Deer Resistant, Attract Butterflies, Attract Hummingbirds, Bee Friendly, Rabbit Resistant, Native, Evergreen
Awards
Utah's Choice
Special Groups
High Country Gardens Exclusive, High Country Gardens Introduction
Ideal Region
Western Only
Native To
North America
Planting Guides

Tips For Growing Salvia

Salvia (commonly referred to as ‘Sage’) represent a huge family of ornamental plants that attract a variety of pollinators to their nectar rich flowers. They are resistant to deer and rabbits.

  1. Plant in full sun.
  2. Plant native Western Salvia varieties in soil that is low fertility and well-drained.
  3. Plant Old World Salvia in a wide range of soils (loams, sand) including clay.
  4. Many spring-flowering varieties of sage will re-bloom in fall if deadheaded after the first bloom.
  5. New transplants need regular irrigation their first growing season to establish themselves. Once established they will need regular, deep irrigation during hot, dry weather.
  6. During fall garden clean-up, wait to cut back the plants until spring for improved cold hardiness.
  7. In colder USDA zones (zone 6 and below) it is essential to give Native Southwestern and Southwestern hybrids protection from the extreme cold their first couple winters in the garden. Mound up pine needles or fallen autumn leaves over and around the base of the plant.

Western Native Salvia: : It is from the Western US that we find our most beautiful native salvia species. For attracting hummingbirds, there are no finer flowers than the Western native sages. Typically, this group of Salvia prefer ‘lean’ (not very fertile), well drained soils. They will grow in dry clay conditions in arid climates but will rot out in clay soils where there is more than about 15 to 18” of precipitation annually.

Western Salvia include:

  • Salvia greggii - ‘Furman’s Red’, ‘Cold Hardy Pink’
  • Salvia hybrids - ‘Maraschino’, ‘Raspberry Delight’, ‘Ultra Violet’ and ‘Burgundy Seduction’.
  • Salvia pachyphylla and Salvia dorrii is recommended for arid western gardens.
  • Salvia azurea and Salvia reptans - Early fall bloomers with excellent cold hardiness.

To get established in USDA zones 5 & 6, Western Salvia (noted above) must be planted in spring or early summer, not in the fall. Protect your new plants over their first winter or two in your garden. Cover each plant with a generous pile of clean straw or pine needles. This allows the plant's crown (junction of root and branches) to mature and obtain maximum cold hardiness.

Old Wolrd Salvia: The Old World Salvia include some of the very best, most durable, longest-lived perennials. These salvia are an excellent choice for gardeners across most of the United States. ‘Old World’ Sages bloom primarily in shades of blue, pink and white. They are well adapted to cold climates and a wide range of soils including clay. The European Salvia are incredibly attractive to honey bees, many of our native bees and bumble bees as well as butterflies.

Old World varieties include:

  • Salvia syslvestris'Lyrical Rose', 'May Night', 'Little Night', 'Caradonna' and 'Marcus'.
  • Salvia daghestanica
  • Salvia verticiliata

More in-depth guidance for growing Salvia: Planting Nectar Rich Salvia to Attract Pollinators to the Garden, Sage Advice, The Spectacular Salvia and Cold Hardy, Late Summer / Early Fall Blooming Sages.


View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
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