Grand Bleu Bluebeard (Caryopteris x clandonensis 'Inoveris' GRAND BLEU)
kare-ee-OP-ter-iss ex klan-don-EN-sis 'Inoveris' GRAND BLEU

Deciduous Perennial Shrub, Upright in the Lamiaceae Family
A patented French bluebeard bred for a denser habit and deep violet-blue flowers from midsummer into fall.

Caryopteris x clandonensis 'Inoveris' GRAND BLEU (US Plant Patent 17,837) was bred by M. Alain Cadic of Agri Obtentions in France, developed through induced mutation of the older 'Heavenly Blue' cultivar. It's a more upright, more uniform bluebeard than its parent, forming a dense, compact shrub with shorter internodes.

Grand Bleu produces deep violet-blue flowers from midsummer into fall, and its foliage has a strong, pungent, herbal scent when crushed -- noticeably darker green than 'Heavenly Blue'. Like other caryopteris, it dies back to the ground in cold winters and resprouts from the base each spring.

Pros

  • Denser, more upright, and more uniform habit than its 'Heavenly Blue' parent
  • Deep violet-blue flowers from midsummer into fall
  • Attracts bees and butterflies
  • Patented selection (US Plant Patent 17,837)

Cons

  • Needs full sun and well-drained soil
  • Dies back to the ground in cold winters, like most caryopteris
  • Needs a hard spring pruning each year to stay compact
Highlights A patented French bluebeard cultivar (US Plant Patent 17,837) bred from 'Heavenly Blue' for a denser, more upright habit and deep violet-blue flowers from midsummer into fall.
 

Plant Data

Mature Size 18 - 30 inches tall. 18 - 30 inches wide.
Growth Rate Medium
Sun Exposure Full Sun - Full Sun
Moisture Tolerance Medium
Zones 5a - 9b (Usually hardy to -20° F)
Tags Attracts Bees, Attracts Butterflies, Attracts Hummingbirds, Attracts Pollinators, Attracts Wildlife, Deciduous, Deer Resistant, Full Sun, Full Sun, Medium, Medium, Perennial, Showy Flowers, Shrub
Bloom Period July to September
Flower Color Deep Violet-Blue
 

More Info from Experts
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Pricing and Availability History

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Past Availability
2024 : 05/01 - 10/05
2023 : 04/13 - 09/30

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Field-Grown vs. Greenhouse-Grown Plants

Plants which are well-adapted to our local climate are most often field-grown (outside). Field-grown plants are generally cheaper and have the advantage of already somewhat acclimated to our cold winters, but that means they’re not artificially far along in the spring and tend to bloom at the normal time in our area.

Spring annuals and tender perennials are typically grown in Greenhouses so they can be ready and luxurious exactly when customers want them. Some perennials are also “forced” into early bloom in greenhouses. In May, there can be a very big difference between field-grown and greenhouse-grown plants of the same type. The latter typically look good right away (so they’re a great choice where that’s important), but we typically pay a premium for it.


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No Pricing or Availability Right Now

We order from a rotating cast of the best nurseries in the Great Lakes region. It looks like we've offered this plant in the past, but the nurseries we're working with this week don't appear to have it in stock at the moment.

Our goal is to bring as many plants together under "one roof" as possible, so we'll try hard to make it available again in the future!