Perennials & Biennials

Showing 161–168 of 484 results

  • Epimedium x rubrum syn. Epimedium alpinum var. rubrum Red barrenwort Z 4-8

    In mid- spring small, star-shaped, rosy-red flowers dance on the ends of wiry-thin stems about one foot high. Red-flushed foliage follows the flowers, the more sun, the more red leaves.  Wonderful groundcover especially in shady, well-drained soil where little else grows.

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    In mid- spring small, star-shaped, rosy-red flowers dance on the ends of wiry-thin stems about one foot high. Red-flushed foliage follows the flowers, the more sun, the more red leaves.  Wonderful groundcover especially in shady, well-drained soil where little else grows.

    Size: 16” x 24” slow spreading
    Care: Sun to shade in most any soil but best in part shade – one of most adaptable plants
    Awards: Elisabeth Carey Miller Botanic Garden Great Plant Pick

    Cross between Epimedium grandiflorum and Epimedium alpinum. 1st described in 1853 in Belgique Hort. iii. 33. I.

  • Equisetum scirpoides Dwarf horsetail  Z 3-11

    Short, bamboo-like - Black bands show joints of green stems, no showy flowers

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    Short,bamboo-like – Black bands show joints of green stems, no showy flowers

    Size: 6” x  spreads – invasive in moist soil if not planted in pots sunk in the ground
    Care: full sun, moist to wet soil
    Native: all North America – incl. Arctic - north of IL

    Collected by André Michaux, French planthunter who searched  nearly all No. Am. East of the Mississippi for 11 years in mid-1700’s.  Contains large amounts of silica, giving it abrasiveness, so used to scrub.  Grizzly bears in Pacific Northwest reported to eat Dwarf horsetail.

  • Erigeron aureus Alpine yellow fleabane Z 5-8

    White hairs cover frosted-looking basil leaves making this worthy of any garden even without flowers, but then its school bus yellow daisies flower from spring through fall.

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    White hairs cover frosted-looking basil leaves making this worthy of any garden even without flowers, but then its school bus yellow daisies flower from spring through fall.

    Size: 3-4” x 3”
    Care: sun in moist well-drained to well-drained soil
    Native: Cascade Mountains from Alberta to State of Washington
    Wildlife Value: attracts bees, butterflies and birds

    1st described in literature in 1884.

  • Erigeron compositus Cutleaf daisy, Dwarf mountain fleabane Z 3-8

    Miniature, cushion shaped plant with wooly grey leaves topped by small bluish, pink or white rays like a daisy with a yellow center. Flowers in June-July.

    $9.75/pot

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    Miniature, cushion shaped plant with wooly grey leaves topped by small bluish, pink or white rays like a daisy with a yellow center. Flowers in June-July.

    Size: 6” x 6-12”
    Care: sun to part shade in well-drained soil.
    Native: all of western No. America from prairies to alpine slopes.

    Erigeron comes from Greek er meaning “spring” and geron for “old man” due to some of these species having white downy hair like an old man.
    Thompson Indians from British Columbia chewed on the plant then spit on sores to remedy skin ailments.  They also made a decoction of the plant, mixed with any weeds for broken bones.  Collected by Meriwether Lewis in late spring 1806 near today’s Lewiston Idaho.  Erigeron comes from Greek er meaning “spring” and geron for “old man” due to some of these species having white downy hair like an old man.

  • Erinus alpinus Fairy foxglove, Alpine balsam Z 4-7

    May- July violet, pink or white 5-petaled stars, self-sows

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    May- July violet, pink or white 5-petaled stars, self-sows

    Size: 3” x 4” spreads
    Care: sun to part shade in well drained soil
    Native: Alps & Pyrenees
    Awards: Royal Horticultural Society Award of Garden Merit.

    Erinus comes from Greek er meaning spring, for the time when this plant blooms.  Collected by 1716.  Wm. Robinson, father of mixed perennial border, called this a “pretty alpine plant.”

  • Erodium manescavii syn. Erodium manescani Heron’s bill Z. 5-8

    Magenta saucer-shaped petals April-November. Seed’s tail like a corkscrew, flings seed as it dries.

    $13.25/bareroot

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    Magenta saucer-shaped petals April-November. Seed’s tail like a corkscrew, flings seed as it dries.

    Size: 12-18” x 8”
    Care: Full sun in well-drained soil
    Native: Pyrenees

    Erodium is Greek meaning “heron,” because the seed capsule resembles a heron’s head and bill. Collected before 1889. According to William Robinson, father of the mixed perennial border, this is “most showy (and) throws up strong flower stalks…each with 7 to 15 purplish flowers.”

  • Eryngium giganteum Miss Wilmott’s ghost SELF-SEEDING BIENNIAL Z 5-8

    In summer, oval thistles top prickly green, turning steely blue, silvery, bracts – very ornamental.

    $13.25/bareroot

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    In summer, oval thistles top prickly green, turning steely blue, silvery, bracts – very ornamental.

    Size: 36" x 24"
    Care: Full sun in moist well-drained, fertile soil. Be sure to let it drop its seeds & do not weed seedlings out the following spring.
    Native: Caucasus Mountains
    Awards: England's Royal Horticultural Society Award of Merit.

    Eryngium is Greek for thistle.  This species introduced to England in 1820. Miss Ellen Willmott (1858-1934), a wealthy, expert, eccentric English gardener reputedly dropped seeds as she passed her neighbors’ gardens. The plants came up afterwards, her “ghosts.” Recommended by Gertrude Jekyll in 1908.

  • Eryngium maritimum Sea holly Z 5-10

    Round thistles turning steely blue in July-August atop silver colored, prickly bracts. Attractive ivy-shaped prickly foliage.

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    Round thistles turning steely blue in July-August atop silver colored, prickly bracts. Attractive ivy-shaped prickly foliage.

    Size: 12" x 10" slowly spreads
    Care: Full sun in well-drained soil.
    Native: Seacoasts of Europe

    “Eryngium” is Greek for thistle.  Anglo-Saxons prescribed Sea holly root to cure the king’s evil, serpent bites, broken bones, stiff necks and melancholy. Also considered an aphrodisiac and brought on “kissing comfits.”   This was identified by Dioscorides in De Materica Medica for medicinal use around 70 A.D.  Eryngium was described in Gerard’s Herball in 1597 for its uses:” old and aged people that are consumed and withered with age, and which want natural moisture (and also) amended the defects of nature in the younger,” William Robinson, father of the mixed perennial border, considered this plant “very pretty.”