Lathyrus odoratus, commonly known as Flowering Sweet Pea, is a climbing annual prized for its exceptionally large, fragrant blooms. The ‘Mammoth Mixed’ cultivar offers an impressive mix of vibrant colours, from soft pastels to rich, striking shades, producing a long-lasting and eye-catching display from late spring into summer.
This vigorous climber is perfect for trellises, fences, arches, and pergolas, where its twining stems and abundant flowers provide height, colour, and fragrance. The large blooms are ideal for cutting, making them a favourite for floral arrangements and bouquets. Sweet Peas thrive in fertile, well-drained soil and a sunny, sheltered position, and they require support to climb to their full potential.
Key Features:
- Large, ruffled, and highly fragrant blooms in a mixed range of vibrant colours
- Flowering from late spring to summer
- Ideal for trellises, fences, pergolas, and cutting gardens
- Vigorous twining climber
- Prefers full sun and well-drained soil
- Annual, grown outdoors in the UK for summer colour
Lathyrus odoratus ‘Mammoth Mixed’ combines spectacular colour, fragrance, and vertical impact, making it an essential choice for sunny gardens and cutting beds.
Lathyrus Ordoratus (Flowering Sweet Pea) - Mammoth Mixed
Plant Factfile
Height 1.8-2.5m (climbing habit) Spread 20-40cm (stems twine around supports; spread depends on support structure) Soil Fertile, well-drained soil; rich in organic matter; avoid waterlogging Flowers Large, ruffled, fragrant blooms in mixed vibrant colours; late spring to summer Position Full sun; sheltered from strong winds Hardiness H1 – Tender annual; grown outdoors in the UK for summer flowering, not frost-hard What you’re buying
Plant images are used for illustrative purposes only, so you know what your plant will look like once fully grown.
You’re purchasing your chosen size of plug plant (by selecting “Plant Size” option above).
Mini Plugs: Each plug is approximately 15mm sq, containing tender young seedlings in need of pricking out and potting on to grow before being planted out.
Midi Plugs: Each plug is approximately 20mm sq, plants are a little more mature than the mini's, can sometimes be planted out if the weather is good and the last frost has passed.
Maxi Plugs: Each plug is approximately 30mm sq, plants are more mature, sometimes over a year old, which can mean well developed root systems and/or fewer leaves due to winter dormancy or cutting back. Generally hardened off and garden ready, though for best results good weather is preferred for planting out.
Full information about plant sizes, including pictures, can be found here.
Delivery & Dispatch
Delivery Costs
- £3 flat rate delivery on all orders under £50
- Free delivery on orders over £50
When Orders Are Posted
Orders are normally posted on the Tuesday following your order. This helps us work efficiently and also reduces unnecessary trips and emissions. In most cases, after Tuesday posting your plants should arrive before the weekend.
Packaging & Plant Care During Transit
Our plugs are gently squeezed and carefully packed into breathable, unsealed plastic bags. The plants are then packed into recycled cardboard packaging wherever possible.