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Hardy perennial
Lamiaceae
Perennials
Lavender ‘Grosso’
Lavandula x intermedia
Lavender 'Grosso': 75 cm high and 60 cm wide, full sun exposure. Violet flowers in July-August. Zone 4; choose soil compatible with its moisture needs.
- Exposure
- Sun
- Life cycle
- Hardy perennial
- Hardiness
- Zone 4
Discover the plant
Common nameLavender ‘Grosso’
FamilyLamiaceae
GenusLavender
Speciesintermediary
CultivarBig one
TypeHardy perennial
Botanical nameLavandula x intermedia
‘Grosso’ Lavender (Lavandula intermedia ‘Grosso’) brings a palette of purple to the garden. Its foliage features shades of gray and silver, which can be highlighted among different textures. Its usual flowering period is July-August. At maturity, expect 75 cm in height and 60 cm in width, making it suitable for mid-border placement and group plantings.
Soil choice is essential for ‘Grosso’ Lavender: it needs to be well-drained and rather light; avoid water pockets around the crown. The preferred exposure is full sun. After planting ‘Grosso’ Lavender, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry between waterings and prioritize drainage, especially during thaws. Maintain 60 cm as a general guideline between plants; this helps preserve their shape and allows access for care. The indicated hardiness zone is zone 4, to be assessed according to your garden's conditions.
When planting ‘Grosso’ Lavender, prune lightly into the leafy shoots after flowering, without drastically cutting back old wood devoid of leaves. Winter drainage is very important for lavender; waterlogged soil during thaws weakens its base. For companion planting, consider catmint, upright sedums, and yarrows in varieties with similar needs. Its flowering (July-August) and spread of 60 cm will serve as benchmarks for arranging other plants around it.
Planting guide
From planting to establishment.
Spacing / density
23.62 inches
Best planting time
Preferably in spring, in warm and workable soil, with consistent watering during establishment.
Propagation
Division of clumps; stem cuttings. Sowing does not guarantee the fidelity of a named cultivar.
Growing method
'Grosso' Lavender: Preferably in spring, in warm, workable soil, with consistent watering during establishment. After planting 'Grosso' Lavender, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry between waterings and prioritize good drainage, especially during thaws. Winter drainage is very important for lavender; waterlogged soil during thaws weakens its base.
Soil and care
The right care,at the right time.
Soil pH
neutral to alkaline; general indication of the botanical group
Care level
Routine maintenance
Watering
After planting ‘Grosso’ lavender, water thoroughly to moisten the root ball deeply. Once established, allow the surface to dry out between waterings and prioritize drainage, especially during warm spells.
Soil type
Well-draining, rather light; avoid water pockets around the collar
Fertilization
Fertilizer for flowering
Moisture
Low to moderate after establishment; priority drainage
Seasonal care
Lavender ‘Grosso’: lightly prune leafy shoots after flowering, without brutally cutting back old wood devoid of leaves. During its flowering period (July-August), also monitor damaged stems and neighboring plants that might obscure the clump.
Container growing
A garden,within reach.
Recommended pot size
A stable and perforated container, noticeably wider than the root ball; dimensions to be adapted to the sold format and adult development.
To try Lavandula x intermedia 'Grosso' in a container, choose a stable pot with drainage holes, suitable for the root ball and its future size (60 cm). Water should drain freely after each watering; check the root ball more often than you would for plants in the ground. Plan to protect the container in winter depending on your climate.
Bloom and dimensions
Its place,in your garden.
Mature height
30 inches (76 cm)
Width / spread
24 inches (61 cm)
Flower color
Purple
Foliage color
Green
Foliage type
Persistent to semi-persistent depending on the climate and winter conditions
Growth rate
Moderate
Growth habit
In a rosette
Fragrance
Not documented for this selection
Bloom period
July-August
Garden associations
In goodcompany.
Companion plants
Associations to consider for Lavander 'Grosso': catmint, upright sedums, yarrows. Choose varieties that tolerate sun and comparable humidity; allow each clump its adult space.
Plants to avoid
Around ‘Grosso’ Lavender, especially avoid neighbors that would cover its leaves or strongly compete with its root ball. Compatibility of light, water, and size takes precedence over a list of so-called enemy plants.
Frequently asked questions
Your questions,answered.
Where to plant Lavender 'Grosso'?
Expect sun and suitable soil (well-drained, rather light; avoid water pockets around the collar). Winter drainage is very important for lavender; waterlogged soil during thaws weakens its base.
Where should I plant 'Grosso' lavender?
Expect a height of about 75 cm and a width of 60 cm at maturity. Approximately 60 cm between centers, to be adjusted according to the actual development of the clump. This size is suitable for use in the middle of a flower bed and for group planting.
When does 'Grosso' Lavender bloom?
The period indicated is July-August. The flower color is purple. The exact date and duration depend on the climate, season, and plant establishment.
How to water and care for Lavender 'Grosso'?
After planting 'Grosso' Lavender, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry out between waterings and prioritize drainage, especially during warm spells. Lightly prune the leafy shoots after flowering, without harshly cutting back old, leafless wood.
Can ‘Grosso’ Lavender be grown in pots?
To plant ‘Grosso’ lavender in a container, choose a stable pot with drainage holes, suitable for the root ball and its future size (60 cm). Water should drain freely after each watering; check the soil more often than you would for plants in the ground. Depending on your climate, plan to protect the container in winter.
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