Caryopteris clandonensis Dark Knight

Dark Knight Blue Mist Spirea (Bluebeard)

Dark Knight Blue Mist spirea (Caryopteris clandonensis) blooms with a profusion of dark blue flowers in late summer when few other shrubs are flowering. Its modest size makes it very useful in smaller yards. A fantastic nectar source for bees and butterflies. Drought resistant/drought tolerant plant (xeric).
Zones 5 - 9
Advantages
Deer Resistant
Attract Butterflies
Bee Friendly
Rabbit Resistant
Fragrant
Cut Flowers
Low Maintenance
Light Requirements
Full Sun
Annual Rainfall
10 to 20"
20 to 30"
30 to 40" (with care)
Mature Plant Size 36-48" tall 48" wide
Bloom Time Early to late summer
Shipping Shipping begins the week of February 25th, 2019 Learn More…
Size Plant - 5" Pot
SKU HC014509

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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Regular Price $11.99 Sale $10.79
Per Plant - 5" Pot
You save: 11%
In stock
SKU
HC014509

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Details
36-48" x 48" wide. One of the best Blue Mist Spirea varieties, 'Dark Knight' has the deepest blue color of them all. Its tidy, upright growth habit and profusion of flowering spikes make it an essential part of the summer landscape. A reliable performer, 'Dark Knight' flowers heavily every year. Of modest size, it can be used in front of low walls, as a hedge or in groups around the base of larger shrubs, small trees and upright evergreens. Avoid heavy wet clay soils. (cutting propagated)
More Information
SKU
HC014509
Ships To Canada
No
Common Name
Dark Knight Blue Mist Spirea (Bluebeard)
Botanical Name
Caryopteris clandonensis Dark Knight
Zones
5, 6, 7, 8, 9
Light Requirements
Full Sun
Flower Color
Blue
Height
48 inches
Mature Height
36-48" tall
Mature Spread
48" wide
Bloom Time
Early - Mid Summer, Mid - Late Summer
Bloom Time
Early to late summer
Ships As
Potted Plant
Planting Time
Spring / Summer, Fall
Soil Type
Sandy Soil, Average Soil, Low Fertility Soil, Well-Drained Soil
Soil Moisture
Drought Resistant / Waterwise
Amount Of Rain
10 to 20", 20 to 30", 30 to 40" (with care)
Advantages
Deer Resistant, Attract Butterflies, Bee Friendly, Rabbit Resistant, Fragrant, Cut Flowers, Low Maintenance
Ideal Region
Anywhere In The US, Northeast, Midwest, West, Southwest, Pacific Northwest
Item Package Size
Plant - 5" Pot
Planting Guides
Growing Shrubs and Small Trees:
The shrubs and trees we sell are 1-2 year-old seedlings. These young plants appreciate some extra attention during their first 3 years in your landscape.

    Preferred growing conditions:
  • Check each species soil preferences before planting. Some do well in clay while others do not.
  • Mulch with common mulching materials. As they get larger (2 ft. or more in height), thicken the mulch layer to a depth of 2-3 inches.
  • Even xeric (waterwise) species will establish better and grow more quickly when given regular irrigation during the first 3 years in the garden. As they begin to reach maturity, watering frequency can be reduced to a good deep soaking every 10 to 14 days during the heat of summer.
  • Plant in full sun or part sun depending on plant preference.
  • Dig a wide but shallow hole and enrich the soil with ample amounts of compost and Yum Yum. This will help them to grow and mature more quickly.
  • Special comments:
  • Most native shrubs and trees are highly recommended for providing wildlife habitat (nesting spots, fruit or seeds for songbirds and mammals, nectar for pollinators).
  • They are excellent for use to grow as natural (un-sheared!) hedges along fences, property lines and driveways. They live for many years once established.
  • Garden Care:
  • Fertilize in the fall with Yum Yum Mix and good quality compost. This is most important during the first 3 years in the landscape. Established plants don't need to be fertilized (unless growth is stunted by extremely poor soils).
  • Where browsing animals (rabbits, deer and others) are a problem, it is advisable to protect young plants with a wire cage. These can be removed after 3-4 years in the ground.
  • Mulching is essential to maintain the soil moisture these woody plants need to establish their deep growing roots. Be sure and replenish the mulch in fall and summer to keep it sufficiently deep.

  • 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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