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LAVANDULA x intermedia 'Grosso'

Image of Lavandula x intermedia 'Grosso'

James H. Schutte

Family

Lamiaceae

Botanical Name

LAVANDULA x intermedia 'Grosso'

Plant Common Name

Hedge Lavender, Hybrid Lavender

General Description

There is no better lavender for crafters and flower arrangers. The heavy flowering 'Grosso' has extra large, fragrant, rich lavender-blue blooms that hold together exceptionally well when dried.

High vigor and a tough constitution make this lavender an ideal landscape plant for dry climates as well as a great source for fragrant cutflowers, fresh or dried. Hedge lavender is a hybrid between the popular English lavender (Lavandula angustifolia ) and spike lavender (Lavandula latifolia). It is less hardy than Lavandula angustifolia but very drought tolerant and resilient. This beautiful ornamental is technically a subshrub, which means it behaves like a perennial but develops woody stems over time. It develops a large, rounded, dense habit and has small, linear, gray-green leaves that are richly aromatic and turn steely gray in winter.

Hedge lavender blooms in summer, producing a wealth of slender, upright stems topped with dense clusters of lavender-blue flowers. The highly fragrant blooms are attractive to bees, butterflies and other insect pollinators. They are sterile, so they do not self-sow, unlike other lavenders. The blooms turn brown as they age and should be removed once spent to keep the plants looking tidy. This will also encourage continuous flowering, though the first flush of flowers is always the heaviest.

Growing success depends on light levels and soil drainage; full sun and sharply drained soil are essential. Moist winter weather is especially detrimental and can lead to root and stem rot and eventually plant death. Its stems become quite woody and coarse looking over time. If this should happen, it should be pruned back severely in spring. This will encourage a new flush of foliage, which will keep plants looking young and fresh.

The long-stemmed flowers of hedge lavender are excellent for cutting. They are favored for linen sachets and potpourris. If preparing the blooms for drying, cut them while fresh and hang them upside down to dry. In the garden, lavender can be planted in rows as a low hedge or in sunny dry spots where its fragrance and summer color can be appreciated. Containers are also ideal for this bee and butterfly magnet.

Characteristics

  • AHS Heat Zone

    9 - 6

  • USDA Hardiness Zone

    6 - 9

  • Sunset Zone

    4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Herb

  • Sun Exposure

    Full Sun

  • Height

    24"-28" / 61.0cm - 71.1cm

  • Width

    28"-36" / 71.1cm - 91.4cm

  • Bloom Time

    Early Summer, Summer, Late Summer

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Tolerances

    Drought

  • Growth Rate

    Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Oval/Rounded

  • Seasonal Interest

    Spring, Summer, Fall, Winter

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Lavender, Blue Violet

  • Fruit Color

    Sandy Brown

  • Foliage Color (Spring)

    Light Green, Gray Green

  • Foliage Color (Summer)

    Light Green, Gray Green

  • Foliage Color (Fall)

    Light Green, Gray Green

  • Foliage Color (Winter)

    Gray Green, Silver, Gray

  • Bark Color

    Sandy Brown

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    Yes

  • Fragrant Foliage

    Yes

  • Bark or Stem Fragrant

    Yes

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Fine

  • Foliage Sheen

    Matte

  • Evergreen

    Yes

  • Showy Bark

    No

Special Characteristics

  • Usage

    Container, Cutflower, Edging, Feature Plant, Foundation, Hedges, Herb / Vegetable, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    No