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$20.99
Sweet Pea ‘King Size Royal Navy’ Seeds – 1 Packet (25 Seeds) – Lathyrus odoratus Hardy Annual – Kew Flowerhouse Collection – Deep Blue Highly Fragrant Climbing Cut Flowers by Thompson & Morgan — image 1
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Sweet Pea ‘King Size Royal Navy’ Seeds – 1 Packet (25 Seeds) – Lathyrus odoratus Hardy Annual – Kew Flowerhouse Collection – Deep Blue Highly Fragrant Climbing Cut Flowers by Thompson & Morgan

$20.99
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About this item
  • DEEP INKY BLUE BLOOMS – rich, luxurious flower colour
  • HIGHLY FRAGRANT – strong, classic sweet pea scent
  • IDEAL CUT FLOWER – long stems perfect for vases
  • Kew Flowerhouse Collection – developed with Royal Botanic Gardens, Kew
  • CLIMBING HABIT – perfect for trellises, arches, and supports
Product description

Sweet Pea ‘King Size Royal Navy’ from the Kew Flowerhouse Seed Collection produces rich, inky navy-blue blooms with a luxurious ruffled form and an exceptional, heady fragrance. Developed in collaboration with Royal Botanic Gardens, Kew, this premium variety has been selected for its strong garden performance and outstanding cut flower qualities, making it ideal for both garden displays and indoor arrangements. Each strong stem carries multiple large blooms, creating a generous and long-lasting display throughout the flowering season. With its elegant colouring and long, slender stems, it is perfect for climbing supports, arches, or obelisks, and pairs beautifully with softer pastel varieties for contrast in the garden or vase. Approximate height: 180cm (71in). Approximate spread: 30cm (12in). How to Grow Sow: Sow indoors in October or outdoors from March to April. For indoor sowing, plant 3 seeds per 7.5cm pot at 1cm depth in free-draining compost. Light: Full sun for best flowering performance. Temperature: Hardy annual; protect young plants from extreme cold when overwintering indoors or in a cold frame. Watering: Keep compost moist but not waterlogged during germination and establishment. Feeding: Enrich soil before planting; regular feeding during growth improves flowering and stem strength. Maintenance: Pinch out growing tips after the second pair of leaves to encourage bushy growth. Train plants onto supports and tie in as they grow. Plant out in spring at 23cm spacing. 1 Packet (25 Seeds) Images shown are for guidance only and show the expected results of plants upon maturity. Different growing conditions might vary results. Image may be included for illustration of supply but can vary due to seasonality changes (e.g. deciduous plants lose leaves in colder months). Decorative pots are not supplied.

Product details
Brand
Thompson & Morgan
Manufacturer
Thompson & Morgan
Colour
Blue
EAN
5057554184033

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10 Trustpilot reviews total, with 2 shown at a time.

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Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

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Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

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