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Sweet Pea 'Mammoth Rose Pink' Seeds

The 'Mammoth Rose Pink' strain is specifically bred for size and vigour, making it a top choice for spectacle rather than just scent. It produces large, frilly blooms in a glowing, deep rose-pink colour that catches the light beautifully in the summer garden.

The plant features extra-long, sturdy, and straight stems that are ideal for arranging in vases, making it a favourite for cut-flower enthusiasts and exhibition. While its main purpose is visual spectacle and vigour, it still possesses a lovely, sweet fragrance that will fill a room once brought indoors.


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🌿 Understanding the Plant

Lathyrus odoratus 'Mammoth Rose Pink' is a Hardy Annual (H3). It is part of the 'Mammoth' series, which was developed to provide larger-than-average flowers on much longer stems, specifically for professional-standard cutting.

Superior Vigour: These plants are designed to be more robust than traditional varieties, showing excellent resistance to common UK garden challenges and maintaining a high flower-to-foliage ratio throughout the season.

Wildlife Impact: While bred for exhibition size, 'Mammoth' varieties retain open, accessible flowers that are a particular favourite for bumblebees, who are easily attracted by the vibrant rose-pink hue.

🌱 Growing Guide

Sweet Peas are "hungry and thirsty" climbers that reward good soil preparation with a spectacular vertical display.

How to Sow:
For the earliest flowers and strongest roots, sow indoors in October to November and overwinter in a cold frame. Alternatively, sow from January to March. Soak seeds in tepid water for a few hours before sowing 1cm deep in deep pots or root trainers.

Where to Plant:
Plant out in April or May in full sun and rich, fertile soil. They require a sturdy support structure like a trellis, wigwam, or netting to climb immediately. Dig in plenty of well-rotted manure or compost before planting to provide the nutrients they crave.

Ongoing Care:
The golden rule for 'Mammoth' varieties is "Pick, Pick, Pick!" Regularly harvesting the flowers prevents seed pods from forming; once the plant sets seed, it will stop flowering. Feed weekly with a high-potash fertiliser (like tomato feed) once the first buds appear.

📋 Plant Specifications
Botanical Name Lathyrus odoratus 'Mammoth Rose Pink'
Common Name Mammoth Sweet Pea
Plant Type Hardy Annual
Hardiness H3 (Hardy Annual)
Light Requirements Full Sun ☀️
Height 1.8m - 2.4m (Climber)
Spread 30cm
Spacing Plant 20-30cm apart
Flowering Period June to September
Seeds per Packet Approximately 25 seeds
🤝 Beautiful Garden Combinations

The glowing rose-pink of 'Mammoth' makes a bold statement; use these partners to balance the display:

  • ☁️ Cosmos 'Purity': The Classic Screen. Planting bushy white Cosmos in front of your Sweet Peas hides the lower stems with feathery foliage, while the pure white saucers make the deep rose-pink of the Mammoth blooms look even more vibrant.
  • 🔵 Cornflower 'Blue Ball': The Cottage Classic. The electric blue of Cornflowers and the rich pink of these Sweet Peas create a timeless, jewel-toned palette that is a haven for pollinators.
📅 Sowing & Flowering Calendar

Sow in autumn or early spring for a vertical display of scented colour.

Month J F M A M J J A S O N D
Sow Indoors
Plant Out
Flowering

⚠️ Toxicity Warning
Sweet Pea seeds are mildly toxic if ingested in large quantities. They are grown for their beauty and scent, not for food. Please keep seeds away from children and do not mistake the pods for edible garden peas.

🏆 RHS Plants for Pollinators

Sweet Pea 'Mammoth Rose Pink' is officially listed on the RHS Plants for Pollinators list. Its vibrant colour and nectar accessibility make it an absolute magnet for bees throughout the summer months.

📖 Want more detailed growing advice?
View our Complete Growing Guide for Hardy Annuals →

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£2.30
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    2 total reviews

    Sweet Pea Mammoth Rose Pink - Bishy Barnabees Cottage Garden Ltd
    Sweet Pea Mammoth Rose Pink - Bishy Barnabees Cottage Garden Ltd
    Sweet Pea Mammoth Rose Pink - Bishy Barnabees Cottage Garden Ltd
    Sweet Pea Mammoth Rose Pink - Bishy Barnabees Cottage Garden Ltd