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lavender plants perennials Phenomenal® LavenderLavandula intermedia Phenomenal Overview Uses: Borders, herb gardens, mass plantings, containers, low hedges, and sunny foundation plantings. Benefits: Fragrant violet blue flower spikes rise above silvery foliage. Noted for exceptional tolerance to heat, humidity, and cold compared to many other lavenders. USDA Hardiness Zones: 59 Sun: Full Sun Life Cycle: Hardy Perennial Growth Habit: Mounding, Rounded dense silvery foliage forms a compact dome.
Uses: Borders, herb gardens, mass plantings, containers, low hedges, and sunny foundation plantings.
Benefits: Fragrant violet-blue flower spikes rise above silvery foliage. Noted for exceptional tolerance to heat, humidity, and cold compared to many other lavenders.
USDA Hardiness Zones: 5–9
Sun: Full Sun
Life Cycle: Hardy Perennial
Growth Habit: Mounding, Rounded — dense silvery foliage forms a compact dome.
Bloom Color: Violet-Blue
Foliage Color: Silver-Green
Mature Height: 18–24 inches
Mature Width: 24–36 inches
Bloom Season: Mid to Late Summer
Growth Rate: Moderate
Fragrant, resilient, and beautifully structured—lavender that thrives where others struggle.
Lavandula × intermedia ‘Phenomenal’ is widely recognized for its ability to tolerate both summer humidity and winter cold. Its silvery foliage forms a compact, rounded mound that provides texture even when not in bloom.
In mid to late summer, long stems carry violet-blue flower spikes that are strongly fragrant and attractive to pollinators. The blooms dry well for sachets and arrangements, while the foliage maintains a tidy, architectural presence in sunny landscapes.
This variety performs especially well in sharply drained soils and is a dependable choice for gardeners seeking structure, fragrance, and seasonal color in one plant.
Plant in Full Sun for best flowering and compact growth.
Provide sharply drained soil. Sandy or gravelly soils are ideal. Avoid consistently wet or heavy clay soils.
Water regularly during the first growing season to establish roots. Once established, allow soil to dry between waterings.
If desired, apply a light feeding of slow release fertilizer in early spring. Excess fertility can reduce flowering.
Prune lightly in early spring as new growth begins, trimming back about one-third of the plant to maintain shape and encourage fresh blooms.
Container Growing: Use a container with excellent drainage and a gritty potting mix. Container-grown plants require more frequent watering than those planted in the ground. Plants hardy in the ground may require winter protection when grown in containers in colder zones.
Plants are shipped in greenhouse-grade grow pots and are well-rooted and established for transplanting. Each plant is appropriately sized for its container at the time of shipping. If you have specific sizing questions, please contact us.
This lavender typically matures to 18–24 inches tall and spreads 24–36 inches wide, forming a dense, rounded mound.
This plant is commonly known as Lavender, Lavandin, or Hybrid Lavender.
This selection is valued for improved tolerance to humidity and winter cold compared to many traditional English lavenders, making it more adaptable across a wider range of climates.
Lavender is generally less attractive to deer due to its aromatic foliage. For more options with similar resilience, explore our Deer-Resistant Perennials and Grasses collection.
It performs beautifully in sunny borders, herb gardens, and low hedges. You can also explore more sun-loving varieties in our Perennials collection.