Salvia uliginosa

Blue Spike Sage (Bog Sage)

Blue Spike Sage or Bog Sage (Salvia uliginosa) is a tough, long blooming sage that flowers for months with compact spikes of rich sky-blue flowers. This perennial is exceptionally easy-to-grow, and tolerates a wide range of growing conditions.
Zones 6 - 9
Advantages
Attract Butterflies
Attract Hummingbirds
Bee Friendly
Light Requirements
Full Sun
Morning Sun & Afternoon Shade
Annual Rainfall 10 to 20", 20 to 30", 30 to 40", 40 to 50"
Mature Plant Size 48" tall , 36-40" wide
Bloom TimeLate spring to mid-summer
Shipping Shipping begins the week of February 25th, 2019 Learn More…
Size Plant - 5" Pot
SKUHC017267

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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$10.99
Per Plant - 5" Pot
In stock
SKU
HC017267

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Details
Blue Spike Sage or Bog Sage (Salvia uliginosa) is becoming a very popular species, enjoyed for its long blooming display of sky-blue flowers, large bushy habit, and exceptionally resilient garden performance. A big growing sage that spreads by underground rhizomes, it grows in both wet and dry soil conditions. Blue Spike Sage grows in most any soil type and tolerates both sun and partial shade. Native to southern Brazil, Argentina, and Uruguay, it won the Royal Horticultural Society's Award of Garden Merit for its outstanding performance in England and Europe.
More Information
SKU
HC017267
Ships To Canada
No
Common Name
Blue Spike Sage (Bog Sage)
Botanical Name
Salvia uligiyessa
Zones
6, 7, 8, 9
Light Requirements
Full Sun, Morning Sun & Afternoon Shade
Flower Color
Blue
Height
48 inches
Mature Height
48" tall
Mature Spread
36-40" wide
Bloom Time
Late Spring - Early Summer, Early - Mid Summer
Bloom Time
Late spring to mid-summer
Ships As
Potted Plant
Planting Time
Spring / Summer, Fall
Soil Type
Sandy Soil, Clay Soil, Average Soil
Soil Moisture
Drought Resistant / Waterwise, Average, Moist / Wet
Amount Of Rain
10 to 20", 20 to 30", 30 to 40", 40 to 50"
Advantages
Attract Butterflies, Attract Hummingbirds, Bee Friendly
Ideal Region
Northeast, West, Southwest, Pacific Northwest
Item Package Size
Plant - 5" Pot
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.
Shipping
ZoneShipping Status
Zone 2Shipping begins the week of May 20th, 2019
Zone 3Shipping begins the week of May 20th, 2019
Zone 4Shipping begins the week of May 20th, 2019
Zone 5Shipping begins the week of April 29th, 2019
Zone 6Shipping begins the week of April 15th, 2019
Zone 7Shipping begins the week of March 25th, 2019
Zone 8Shipping begins the week of March 4th, 2019
Zone 9Shipping begins the week of February 25th, 2019
Zone 10Shipping begins the week of February 25th, 2019
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