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Summerific® Holy Grail Hardy Hibiscus Plant

  • - Rose Mallow, Swamp Rose Mallow, Perennial Hibiscus
  • - Hibiscus moscheutos
  • - Height: 3-4 feet
  • - Hardiness Zone: 4-9
  • - Bloom Time: July-August
  • - Exposure: Full Sun
  • - Each Quart contains 1 Summerific® Holy Grail Hardy Hibiscus Plant
Plant Features

Summerific® Holy Grail Hardy Hibiscus Plants offer something special. The large 8-9-inch, deep red flowers bloom amongst the oval shaped leaves that are almost black in color. You don't want to be without this beauty in your late summer garden.

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

Attribute name Attribute value
Plant Needs
Sunlight 6+ hours
Soil Moisture Moist to Wet
Soil Properties Well-drained
Tolerates Clay soil
Fertilizer Every 4-6 weeks
Attribute name Attribute value
Plant Characteristics
Height Category Tall
Mature Spread 4-5 feet
Habit Upright
Flower Color Red
Foliage Color Green
Attracts Bees
Features Heat tolerant
Garden Styles Cottage Garden, Tropical Garden, Wetland Garden
Plant Used for Aesthetic Appeal, Borders and Edging, Focal Point, Healing and Medicinal, Thriller
Critter Resistance Deer
Pet Friendly Yes
Plant Type Hybrid

Product Reviews


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Top Reviews

Love these hardy hibiscus, highly recommend

My plants arrived very healthy, excellent shipping/packaging, and they are growing very well. I am very happy with my purchase and will definitely buy more from GrowJoy. They are a wonderful addition to garden.

From anonymous | August 04, 2023

Exactly what I ordered and expected!

The two hibiscus plants I ordered came well-packed and in excellent shape and on-time! Really, I couldn't have asked for a better experience with GrowJoy.

From Rick | October 08, 2022

Holy Grail Hardy Hibiscus

I planted this Holy Grail Hardy Hibiscus and Brandy Punch Hardy Hibiscus from GrowJoy last year.The photo is of the 2 plants in only 1 year later. They both grew and flowered unbelievably and continue to bloom in September when this picture was takI am very happy with my purchase from GrowJoy that I purchased 4 more Hardy Hibiscus plants this year! Plants are very healthy and do great here on Long Island N.Y. You will not be disappointed with these plants! Thanks GrowJoy for selling premium quality plants!

From Peter | September 30, 2021

Terrific Looking Plants

These plants arrived healthy and thriving, and I'm looking forward to see what they turn out like next summer.

From Paula | September 28, 2021

Summerific Holy Grail Hardy Hibiscus Plant

They sure are going to be beautiful next year with my other older ones wanted to fill them in

From Vicky | August 16, 2021

Holy Grail Hardy Hibiscus

Beautiful!!! Will order more.

From anonymous | August 15, 2020