Description
LAVANDULA × intermedia ‘Grosso’ or Lavender ‘Grosso’ is one of the most famous and widely grown hybrid lavenders in the world, celebrated for its exceptionally strong fragrance, vigorous growth, and deep violet flower spikes. A cornerstone of commercial lavender production in France and beyond, ‘Grosso’ is prized for its high essential‑oil yield and its ability to perform reliably in a wide range of garden and landscape settings. Its tall stems, long flowering season, and uniform habit make it a standout choice for hedging, sensory gardens, wildlife planting, and large‑scale ornamental schemes.
Key Features:
Propagation method: Vegetative soft-wood cuttings.
Substrate: Jiffy peat-free propagation Mix.
Plug Size: 4.5cm.
Production system: Grown without artificial light or heating for hardened plants.
Flowers: Deep violet‑purple spikes held high on long, aromatic stems.
Foliage: Narrow, silver‑grey, highly aromatic leaves with a classic hybrid lavender scent
Flowering period: Mid‑summer to early autumn (usually June–September)
Height: Up-to 90cm at maturity.
Spread: Up-to 80cm at maturity. forming a broad, upright mound.
Hardiness: Hardy in most UK regions.
Pollinator value: Highly attractive to bees and beneficial insects.
Sensory value: Ideal for SEND gardens and therapeutic planting schemes.
Ecological impact: Grown in peat-free substrate with no artificial inputs, pollinator and wildlife-friendly.
Awards: widely recognised in lavender trials; a leading cultivar in commercial oil production due to its fragrance strength and consistency
Planting & Care:
Prefers full sun and well-drained, slightly alkaline soils.
Drought-tolerant once established.
Prune lightly after flowering to maintain shape and encourage bushiness.
Ideal for containers, hedging, gravel gardens, and Pollinator/Wildlife-friendly planting schemes.
Commercial Notes:
LAVANDULA × intermedia ‘Grosso’ are supplied as strong, well-rooted, hardy plug plants ready for potting into pots up-to 2lt formats.
Ideal for nursery, and wholesale formats and performs well in peat-free and organic programs.
Suitable for wildlife-friendly, sensory, and sustainable product ranges.
Plant Profile from Royal Horticultural Society:
Lavandula plants are not subject to VAT.
