Summerific® 'Holy Grail' Rose Mallow Hibiscus hybrid

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  • Summerific® 'Holy Grail' - Rose Mallow - Hibiscus hybrid
  • a close up of a flower
  • hibiscus_holy_grail_apj22_1_copy.jpg
  • a close up of a flower
  • flower
  • a field of red flowers
  • hibiscus_holy_grail_apj21_1.jpg
  • vegetation
  • hibiscus_holy_grail_apj20_11.jpg
  • flower
Exposure
  • Part Sun to Sun
Flower Season
  • Spring
  • Summer
Mature Size
Height: 4' - 4'6"
Spread: 4'6" - 5'
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This plant is hardy in zones 4 - 9

Zones are based on the average annual extreme minimum temperature an area is expected to receive during the winter. They are used to determine whether a plant is likely to be perennial in your area. If the number in the green box below is within the zone range listed for the plant, it will be hardy for you and thrive in your climate.

  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
This will be hardy in your zone!

What is my hardiness zone?

NIRTH BAY, ONTARIO

My Current Zone

4

  • FEATURES

    This is truly a special Hardy Hibiscus. Incredibly dark, near-black foliage hold 8-9” deep red flowers. Use as a focal point to your garden and be delighted in mid to late summer.

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    Long Blooming
    Fall Interest
    Bog Plant
    Attracts: 
    Hummingbirds
    Resists: 
    Deer
    Native to North America

    CHARACTERISTICS

    Plant Type: 
    Perennial
    Height Category: 
    Tall
    Garden Height: 
    48 - 54 Inches1.2m - 1.4m
    Spacing: 
    54 - 60 Inches 1.4m - 1.5m
    Spread: 
    54 - 60 Inches 1.4m - 1.5m
    Flower Colors: 
    Red
    Flower Shade: 
    Deep red
    Foliage Colors: 
    Black
    Foliage Shade: 
    Near-black
    Habit: 
    Upright
    Container Role: 
    Thriller

    PLANT NEEDS

    Light Requirement: 
    Part Sun to Sun

    The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

    Maintenance Category: 
    Easy
    Bloom Time: 
    Mid Summer
    Late Summer
    Early Fall
    Hardiness Zones: 
    4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
    Water Category: 
    Average
    Soil Fertility Requirement: 
    Average Soil
    Fertile Soil
    Poor Soil
    Soil PH Category: 
    Acidic Soil
    Uses: 
    Border Plant
    Landscape
    Specimen or Focal Point

     

    Maintenance Notes: 

    Hibiscus love the sun and need moist, well-drained soil. Keeping these plants watered will result in larger flowers and lush foliage. Deadheading will improve the appearance of the plant, but is not necessary for continued bloom. It is best to plant Hibiscus in the garden before the heat of the summer arrives, and should be heavily mulched the first winter. In spring, cut back any remaining stems before new growth appears. Do not trim back in fall. A strong pair of loppers or a saw will be necessary to cut this plant back. Be advised that Hibiscus is always one of the last perennials to emerge in spring. Be patient, even if you think it is dead, it most likely isn't. Its vigorous growth rate more than makes up for this late start, however. Japanese beetles find these plants especially delicious.

    Summerific® 'Holy Grail' Hibiscus hybrid USPP 31,478, Can PBRAF
    PICTURES AND INFORMATION COPIED FROM PROVEN WINNERS
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