Buzz Sky Blue Butterfly Bush (Buddleja davidii 'Buzz Sky Blue')
Buddleja dah-VID-ee-eye 'Buzz Sky Blue'

Semi-Evergreen Perennial Upright, Mounding in the Scrophulariaceae Family

Sky-blue flower spikes on a vigorous, highly floriferous Buddleja bred for months of continuous bloom.

Buddleja davidii 'Buzz Sky Blue' (trade designation TOBUDSKBL) was bred by Thompson & Morgan in Ipswich, England, over eight years of breeding and is protected by European Plant Breeders' Rights (EU38691); no US plant patent has been found for this selection. It produces abundant sky-blue flower spikes, 6-8in long, over a vigorous, well-branched shrub, blooming for roughly three months each season.

Like other Buddleja, it is deer resistant, drought tolerant once established, and a magnet for butterflies, bees, and other pollinators, with sweetly fragrant, nectar-rich flowers.

Pros

  • Abundant, fragrant sky-blue flower spikes over a long bloom season
  • Vigorous, well-branched, highly floriferous habit
  • Deer resistant and a strong draw for butterflies, bees, and other pollinators
  • Drought tolerant once established

Cons

  • Larger and more vigorous than the genus's modern dwarf selections, needing more room
  • Needs a hard prune back to live wood each early spring for best flowering
  • Can develop spider mites during extended drought
Highlights Fragrant Extended Bloom Time Attracts Butterflies Attracts Pollinators Deer Resistant
 

Plant Data

Mature Size 3 - 4 feet tall. 24 - 48 inches wide.
Growth Rate Fast
Sun Exposure Partial Sun - Full Sun
Moisture Tolerance Dry - Medium
Zones 5a - 9b (Usually hardy to -20° F)
Tags Attracts Birds, Attracts Butterflies, Attracts Hummingbirds, Attracts Pollinators, Attracts Wildlife, Container, Deer Resistant, Drought Tolerant, Dry, Edging, Extended Bloom Time, Fragrant, Fragrant Flowers, Full Sun, Good for Beginners, Good for Borders, Good for Butterfly Garden, Good for Cottage Garden, Good for Cut Flowers, Good for Hedges, Good for Mass Planting, Low Maintenance, Medium, Most Popular, Non-Allergenic, Normal Soil, Partial Sun, Perennial, Prairie Garden, Proven Winner Selection, Rabbit Resistant, Reblooms, Showy Flowers, Shrub, Thrillers, Tolerant of Hot Dry Site, Tolerant of Loamy Soil, Tolerant of Moist Soil, Well-Drained Soil
Bloom Period June - September
Flower Color Sky Blue
Foliage Color Gray-Green

Commonly Planted with...

Pairs beautifully with other full-sun, pollinator-friendly perennials such as Russian sage, coneflowers, and black-eyed Susans, or with ornamental grasses for textural contrast.
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Pricing and Availability History

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Past Availability
2025 : 06/29 - 07/12
2024 : 05/16 - 06/15
2023 : 05/04 - 06/04

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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!