Get 20% Off Annuals for Planters HERE

Summerific® Holy Grail Hardy Hibiscus Plant

16.99
  • - 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.

Our Hardy Hibiscus Plants are carefully grown without harmful pesticides, ensuring they are a safe and vibrant addition to your garden. Guaranteed to arrive healthy and ready to thrive!

Planting Instructions:

  • - Best planted in spring or early summer for optimal root development
  • - Space plants 3-4 feet apart to allow for mature growth and proper air circulation

Soil Preparation:

  • - Ideal soil pH: 6.0-7.5
  • - Prefers moist, well-drained soil; thrives in rich, organic soil but tolerates average conditions

Watering Specifics:

  • - Water deeply and regularly, especially during dry periods, to keep the soil consistently moist
  • - Mulch around the base of the plant to retain moisture and maintain even soil temperature

Fertilizer Type:

  • - Apply a balanced fertilizer in early spring to encourage vigorous growth and flowering
  • - Feed again in mid-summer to support continuous blooming

Pruning and Training:

  • - Prune in late winter or early spring to remove dead or damaged stems
  • - Cut back to the ground in late fall after the plant has gone dormant to encourage fresh growth next spring

Additional Pest Management:

  • - Hardy Hibiscus is generally pest-resistant but may attract aphids or Japanese beetles; monitor and treat if necessary
  • - Ensure good air circulation to prevent fungal diseases

Blooming Indicators:

  • - Blooms from mid-summer to early fall with large, showy flowers in shades of red, pink, white, or purple

Temperature Tolerance:

  • - Hardy in USDA zones 4-9, tolerates both heat and cold, but may need protection in colder regions

Companion Plants for Hardy Hibiscus:

  • - Echinacea: Complements Hibiscus with its bright, daisy-like blooms
  • - Achillea: Pairs beautifully with Hibiscus’ large flowers for a striking contrast
  • - Rudbeckia: Adds bright yellow blooms that enhance the bold colors of Hibiscus
  • - Lavender: Provides a fragrant, low-growing companion that complements Hibiscus blooms
  • - Coreopsis: Offers a continuous display of yellow flowers that pairs well with Hibiscus
Attribute name Attribute value
Plant Needs
Sunlight 6+ hours
Soil Moisture Moist to Wet
Soil Properties Well-drained
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
Plant Used for Aesthetic Appeal, Borders and Edging, Focal Point, Healing and Medicinal, Thriller
Critter Resistance Deer
Pet Friendly Yes
Plant Type Hybrid
Tolerates Clay soil

Product Reviews

5
6
4
0
3
0
2
0
1
0

Review this product

Share your thoughts on this product with other customers.

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


#stopAjax