POLEMONIUM SEEDS

The Polemonium genus, commonly known as Jacob’s Ladder, is a charming and elegant member of the Polemoniaceae family. These herbaceous perennials are celebrated for their delicate, fern-like foliage arranged in ladder-like tiers and their clusters of bell-shaped flowers in shades of blue, purple, white, or pink, which bloom from late spring to early summer. Polemonium adds a soft, naturalistic touch to borders, woodland gardens, and cottage-style plantings.

Native to temperate regions of the Northern Hemisphere, Polemonium thrives in moist, well-drained soils and sunny to partially shaded locations. These plants are ideal for cool climates and are highly attractive to pollinators, including bees and butterflies. Popular species such as Polemonium caeruleum, or Blue Jacob’s Ladder, and Polemonium reptans, or Spreading Jacob’s Ladder, are particularly admired for their graceful flowers and foliage.

The Polemonium genus combines beauty, versatility, and ecological value, making it a perfect choice for gardeners seeking elegant, easy-to-grow plants that support biodiversity.

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Displaying all 10 seeds
  1. POLEMONIUM BOREALE

    Attractive clusters of sizeable violet-blue flowers, each with a distinct golden yellow eye, smother the wooly, grey, compact-bushy foliage, their dwarf habit making them ideal in the front of borders, or even containers. This very rare plant is native to the high arctic, and in Greenland it is found only in a small area on the east coast. The whole plant is pubescent, with long woolly hairs. In the wild this gem grows on gravelly slopes and in crevices. It will do best on a sharply-drained bed or even in a pot in the alpine house. Few seeds collected. ... Learn More

    $3.72

    (20 seeds)

  2. POLEMONIUM BRANDEGEI

    An exceptionally vigorous "Jacob's Ladder", flaunting bunches of primrose coloured, and sometimes darker peach-coloured trumpet flowers on strong stems of finely-divided foliage. One of the most attractive and unusual flowers in this group! ... Learn More

    $2.71

    (100 seeds)

  3. POLEMONIUM CAERULEUM

    The ever-popular and easily-grown "Jacobs Ladder" pushes up several stems clad in pinnate leaves topped by panicles of sky blue flowers. ... Learn More

    $2.46

    (350 seeds)

  4. POLEMONIUM CAERULEUM ALBA

    Pure white flowers adorn this lovely albino form of the ever-popular "Jacob's Ladder". It comes quite true from seed and will happily colonise a dark corner. ... Learn More

    $2.46

    (200+ seeds)

  5. POLEMONIUM CAERULEUM 'CASHMERIANUM'

    Predictably from Kashmir comes this bushy form of "Jacob's ladder" with ferny foliage and solid clusters of large silky pale blue flowers in early summer. One of the best butterfly plants you can grow, it prefers fertile, well-drained soil which is not parched, in sun or semi-shade. ... Learn More

    $3.02

    (25+ seeds)

  6. POLEMONIUM CAERULEUM HIMALAYANUM

    This extremely lovely plant opens attractive, bright blue flowers, which are produced from June to September on tall stems up to 1 metre. It flowers from June to September in forests, open slopes and damp places in the Himalayas, from Pakistan to West Nepal, at altitudes of 2400-3700 m. It does best in moist, well-drained soil in sun to semi-shade. Our plants were grown from seed collected by Chris Chadwell on his expedition to the Himalayas in 2013. ... Learn More

    $3.02

    (20 seeds)

  7. POLEMONIUM PAUCIFLORUM

    Long peachy trumpets with flared yellow ends and deep pink marking on the back, adorn this delightful, compact, front of border plant which has finely cut silvery-leaved foliage, and which flowers prolifically in its first year from sowing. ... Learn More

    $2.71

    (100+ seeds)

  8. POLEMONIUM PAUCIFLORUM 'SULPHUR TRUMPETS'

    A delightful form of the North American miniature polemonium or "Jacob's Ladder", Polemonium pauciflorum. Silvery-leaved foliage adorns stems bearing terminal bunches of yellow trumpets, striped in brown, with flared mouths. ... Learn More

    $2.46

  9. POLEMONIUM PULCHERRIMUM

    This variety has the largest flowers of all of the "Jacob's Ladders". Its name translated, appropriately means 'beautiful'. Yellow-eyed blue saucers are carried on strong stem bearing deeply slashed leaves. ... Learn More

    $2.71

  10. POLEMONIUM YEZOENSE 'PURPLE RAIN'

    This is a fabulous garden plant discovered here with bright blue flowers above dark purple foliage that deepens in bright sunshine. Our original seed was collected at altitude in Japan where it is already accepted as one of the largest flowered gems of the race, but in 1991, in one tray of seedlings, we were excited to see just one plant with darker foliage which was especially notable in spring when it developed a purple rosette. Subsequent generations retained this feature, a proportion being darker leaved with a few lighter. This new colour break in polemoniums makes this an extremely valu ... Learn More

    $2.71

    (40+ seeds)

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