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Summerific® 'Holy Grail' Rose Mallow Hibiscus hybrid

Exposure
  • 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).

Flower Season
  • Spring
  • Summer
Mature Size
54" 60"
Height
48 - 54"
Spread
54 - 60"
  • Details

    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.

    Best Seller
    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 Inches
    Spacing: 
    54 - 60 Inches
    Spread: 
    54 - 60 Inches
    Flower Colors: 
    Red
    Flower Shade: 
    Deep red
    Foliage Colors: 
    Black
    Foliage Shade: 
    Near-black
    Habit: 
    Upright
    Container Role: 
    Spiller

    Plant Needs

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

    This plant grows best in full sun and moist, well-drained soil. It leafs out late in spring but grows very quickly. Cut it down in spring before new growth appears.

    Summerific® 'Holy Grail' Hibiscus hybrid USPPAF 31,478, Can PBRAF
  • 3 Reviews

    5
    3
    4
    3
    2
    1
    • This plant is perfectly named. It is definitely the holy grail of hibiscus! Not only are the flowers themselves absolutely stunning, the leaves are equally striking. The flowers are a rich, deep red, and the leaves are a beautiful purple/dark green color - they complement each other so well! There have been at least 2-3 blooms a day since I planted it 2 weeks ago in mid-late August. It's definitely the show-stopper in my garden. I'll be on the lookout for more at my favorite nursery for sure!

      Meghan
      , Tennessee
      , United States
      , 5 weeks ago
    • First year gardener and this has outperformed everything! Definitely a show stopper! Absolutely beautiful. So many buds and the flowers are bigger than my head. Just curious if it produces seed pods? They start to turn tan colored then fall off.

      Ryan Rosenberg
      , Oklahoma
      , United States
      , 8 weeks ago
    • I was a little worried when I rec'd this plant, I ordered 2 & one of them was a little messed up in the shipping. I decided to plant it anyways. Boy am I glad I did. It has grown so big & I have lots of buds on it. Can't wait for them to bloom!!! So pleased with it that I just ordered 2 more.

      Bernadette Vanas
      , Maryland
      , United States
      , 1 year ago
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