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    • Photo of Alcea rosea 'Blacknight' flower, foliage by Annie's Annuals & Perennials

    Photo by Annie's Annuals & Perennials

    Used with permission, all rights reserved.

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    Alcea rosea 'Blacknight'

    Also Known As

    • Alcea rosea hybrid 'Black Knight'
    • Hollyhock

    Plant type

    perennial

    size

    • H: 4'-6'
    • W: 1'-2'

    planting zones

    • 4a-10a

    More Options

    Alcea rosea 'Blacknight' plant details

    Alcea rosea 'Blacknight' is a broadleaf deciduous perennial with green foliage. In fall and summer black and burgundy flowers emerge. Attracts bees, butterflies and hummingbirds making it an excellent addition to pollinator gardens. Grows well with sun and regular - occasional water. Does well in average, rich and well-drained soil. A good option if you're seeking something heat tolerant.

    CHARACTERISTICS OF Alcea rosea 'Blacknight'

    Plant type: perennial
    Plant family: malvaceae
    Foliage: deciduous green
    Mature size: 1 FT - 2 FT - wide, 4 FT - 6 FT - tall
    Flowers: black and burgundy blooms in fall and summer

    GROWING CONDITIONS for Alcea rosea 'Blacknight'

    USDA Zones: 4a - 10a
    Sun exposure: sun
    Watering frequency: regular - occasional
    Resistant to: deer and rabbit, heat
    Soil needs: average, rich and well-drained

    Nursery contributed plant descriptions

    Check out this tall, dark and handsome fella – what’s not to love? He’s a PERENNIAL, RUST RESISTANT Hollyhock, with plenty of dark maroon to (honestly) jet black, 4” blooms covering multiple sturdy stalks that’ll grow to an impressive 6’ tall by 5’ across. Talk about a great focal point! Long blooming, too – Summer thru Fall, you’ll get a gorgeous show, especially in well-draining soil. Consider planting with Nicotiana ‘Lime Green’ for a breathtaking, high-contrast juxtaposition. Cut stems back and top dress with compost when it starts getting chilly out; your ‘Black Knight’ will keep galloping back to save the day time and time again!

    By: Annie's Annuals & Perennials

    Gardening facts about Alcea rosea 'Blacknight' plant

    How to Grow Alcea rosea 'Blacknight'

    • Sun Exposure

      • sun

    • Water Needs

      • regular - occasional

    • Soil Needs

      • average
      • well-drained
      • rich

    • Special Situation

      • heat tolerant

    Features

    • Foliage Color

      • green

    • Flower Color

      • burgundy
      • black

    • Wildlife

      • bees
      • butterflies
      • hummingbirds
      • deer resistant
      • rabbit resistant

    • Flower Season

      • summer
      • fall

    • Foliage Season

      • deciduous

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