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Quick Guide
- Deep violet flowers from mid to late summer
- Exceptionally strong fragrance, ideal for sachets
- Hardy evergreen shrub with silver-green foliage
- Thrives in full sun and well-drained soil
- Excellent nectar source for honeybees
Lavandula × intermedia 'Grosso' is a robust hybrid lavender prized for its exceptionally strong fragrance and prolific flowering. This evergreen shrub produces long-stemmed spikes of deep violet-blue flowers throughout mid to late summer, typically reaching 90 cm tall with an upright, mounding habit. The narrow, silver-green foliage provides year-round architectural interest.
'Grosso' thrives in full sun and well-drained soil with a neutral to alkaline pH, though it tolerates acidic conditions. Once established, it is highly drought-tolerant and requires minimal maintenance. The flowers dry exceptionally well, retaining colour and fragrance indefinitely, making them ideal for cutting, sachets, and lavender wands.
This outstanding honeybee plant attracts pollinators throughout its lengthy flowering season. Hardy to UK Zone H5, it is suitable for most British gardens in well-drained locations. Avoid waterlogged soils and high humidity, which compromise hardiness.
Plant Guide
Plant in spring or autumn in a sunny, sheltered spot with excellent drainage. Space plants 60–90 cm apart to allow for mature spread. Water well after planting and during extended dry spells until established, then reduce watering — the plant is naturally drought-tolerant. Deadhead regularly during the flowering season to encourage a second flush of blooms. In spring, lightly prune to remove any frost-damaged growth and maintain shape. No feeding required; lavender prefers poor to moderately fertile soil. Divide established plants in spring if needed.
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EAN code031465
- Ultimate Height90cm
- Ultimate Spread100-150cm
- Flower ColourDeep Violet Purple
- Foliage ColourSilvery-Green
- ScentExceptionally Fragrant
- SunlightFull Sun
- UK Hardiness ZoneH5
- Care GuideLow maintenance
- Planting SeasonSpring, Autumn
- Season of InterestSummer
- Growth RateModerate
- Drought TolerantYes - Once Established
- Award of Garden MeritNo
- Bee FriendlyYes
- Soil TypeChalk, Sand, Loam
- Soil PHNeutral, Alkaline
Delivery Areas
We deliver within the M25 area of London. For deliveries of Pots & Planters outside this zone, we may be able to help on a case-by-case basis — please contact our sales team at [email protected]. You are also welcome to visit our garden centre in Kentish Town, where our team will be happy to help in person.
Delivery Costs & Delivery Day
Delivery charges are based on postcode zone within the M25. Enter your postcode at the top of this page to see your zone and cost, or check at checkout. You can also select your preferred delivery day at checkout.
Delivery Timeframes
We aim to deliver orders within 2–4 working days. During peak seasons, such as Christmas, delivery times may vary slightly due to increased demand. We will keep you informed at every stage.
Third-Party Couriers
For London postcodes outside a 5-mile radius of our Kentish Town garden centre, we may occasionally use a third-party courier for delivery. In these cases, we try our best to still deliver the items in the requested delivery time slot but please be aware that occasionally this may not always be possible and is out of our control.
Delivery Discrepancies
Please check your order as soon as it arrives. If there is any discrepancy — such as a missing, incorrect, or damaged item — please contact us within 48 hours of delivery so we can put things right. After this time, we will assume the order was received complete and in good condition. We are unable to take responsibility for damage that has occurred after this period.
Click & Collect
We encourage you to collect from our garden centre in Kentish Town — it saves on delivery costs and gives you the chance to see our full range of plants and products in person.
All Click & Collect orders must be collected within 7 days of being ready, unless a later date has been arranged with us in advance. If an order is not collected within this time, it will be cancelled and a refund issued.
Returns Policy
If you need to return an item, please contact us within 14 days of receipt to arrange a return or exchange. Products must be in their original condition and packaging. Plants may be non-refundable unless they arrive damaged or defective.
Items bought in-store or collected can be returned directly at the garden centre. If you would like us to collect a return and it is in good condition (e.g. you have changed your mind), it must be in its original condition, and the same delivery cost will apply for the return.
Plants marked as reduced for end-of-season clearance are non-refundable, as they are sold specifically to clear stock. This does not apply to special offers or multibuy promotions, which are eligible for returns as per our standard terms.
Questions about delivery or returns? Email [email protected] or call +44 (0) 20 7284 4999.
| Located in Kentish Town, London, Boma garden centre is proud of its vision to transform the city into an urban paradise. The garden centre has created a plant lover's paradise, a place where you can relax, unwind and de-stress among the foliage and flowers. The Webshop makes it easier to order online if you can't get to the garden centre, with nationwide delivery. But we encourage plant lovers to pop in for a visit and chat with the team. |
Creating an urban paradise
Our dream is to transform urban living into a plant lovers' paradise. Making our neighbourhoods a wonderful place is good for our wellbeing and more friendly to the environment. A shared vision that gets us out of bed in the morning.
We've curated a botanical sanctuary
Our team of horticulturists planned our garden centre to show plants in their natural habitat, with inspirational displays. Looking for plants is like taking a walk in a botanical sanctuary.
And for those that consider our canine friends an essential part of life, bring your best mate along. Hopefully, they'll get along with our house cat Blue Bell.
It so happens we stock some fabulous plants
Our garden centre specialises in rare specimen plants beyond the common garden varieties. We also stock everything you need to cultivate your dream garden, home and office, with the largest range of plants, pots and containers in North London. Apparently, visitors consider us The gardener's garden centre.
Recommended by Customers
Buy Lavandula × intermedia 'Grosso' (Pot Size 2L) Grosso Lavender at The Boma Garden Centre in Kentish Town, London. Visit our garden centre in London and check our wide range of plants & gardening products. We also offer many other products in our webshop. We look forward to seeing you soon!