Summerific® Holy Grail Hibiscus

Light Needs

Part Sun to Full Sun

(5+ Hours Direct Sun)

Mature Height

4-4.5 Feet

Mature Spread

4.5-5 Feet

Growing Zones

4 to 9

Summerific Holy Grail Hibiscus is a hardy version and will look great in your yard! It has almost black foliage that is paired with large deep red blooms. This one brings hummingbirds to your yard while looking amazing. This award winner is native to North America and resistant to deer.

The foliage is as interesting as the blooms. It is deep near-black in color and provides fall interest. The blooms are a large eight to nine inches and deep red. This upright perennial falls into the tall category reaching a height of forty-eight to fifty-four inches tall and fifty-four to sixty inches wide. The Summerific Holy Grail Hibiscus has a long bloom season that lasts from summer to fall. This hibiscus makes an unforgettable focal point. It is a great border plant, and does well in mass planting. Plant in containers as a thriller or spiller.

Summerific Holy Grail Hibiscus Care

Plant in full sun to part sun, ensuring it receives four to six hours of sun per day. Water needs are average. Soil should be well-drained and moist. Plant your Summerific Holy Grail Hibiscus in acidic soil. It is tolerant to all types of soil. Trim down in the spring prior to new growth. Apply slow release fertilizer in the spring. Mulching in the winter can be beneficial.

Summerific Holy Grail Hibiscus Spacing

The Summerific Holy Grail Hibiscus grows to be 48”-54” inches tall, spacing is important when used for border or mass planting. Spacing for this plant should be 54”- 60” inches, center on center.

Variety	Flowers	Foliage	Mature Size	Why Choose It
Summerific® Lilac Crush Hibiscus	Lavender-blue with red eye	Green	5–5.5' H × 4–4.5' W	Cool-toned blooms on a tall, upright plant
Summerific® Valentines Crush Hibiscus	Bright red	Green with bronze tones	5' H × 3.5' W	Tall, narrow habit with strong red color
Summerific® All Eyes on Me Hibiscus	Blush pink with dark magenta eye	Dark green	3.5' H × 3.5' W	Scaled-down habit with full-size 8" flowers
Summerific® Cherry Choco Latte Hibiscus	White with deep pink veining & red eye	Dark olive with bronze tones	4' H × 4' W	Huge, heavily patterned 8–9" flowers
Summerific® French Vanilla Hibiscus	Creamy custard yellow with red eye	Deep green	3.5–4' H × 3.5–4' W	Creamy yellow flowers on a compact plant
Summerific® Glitter Bomb Hibiscus	White with pink peppermint pattern & red eye	Dark olive green	4.5–5' H × 5.5–6' W	Peppermint-patterned blooms on the broadest habit
Summerific® Coconut Cream Hibiscus	Creamy yellow with red eye	Dark green	4–4.5' H × 4–4.5' W	Early-flowering yellow selection with a rounded habit
Summerific® Cranberry Crush Hibiscus	Deep scarlet red	Deep green with purple tones	4' H × 4–5' W	Glossy scarlet flowers on a full rounded plant
Summerific® Holy Grail Hibiscus	Deep red	Near black	4–4.5' H × 4.5–5' W	Deep red flowers against near-black foliage
Summerific® Garnet Globes Rose Mallow	Garnet red with dark eye	Olive green	3–3.5' H × 3' W	Exceptionally compact red-flowered selection
Summerific® Holy Grail Hibiscus Plant Facts Growing Conditions Hardiness ZonesGrowing Zones USDA Zones 4 to 9 (perennial); grown as an annual elsewhere (outdoors year-round); grown indoors elsewhere (outdoors year-round); grown in containers elsewhere (grown as a seasonal crop) Sun Exposure Part Sun to Full Sun (5+ Hours Direct Sun) Mature Height 4-4.5 Feet Mature Spread 4.5-5 Feet Growth Habit , Upright Water Needs Consistently Moist Flowers & Foliage Flower Colors , Red Flower Description Red Bloom Time Late Summer Foliage Color , Purple Foliage Description Black Foliage Type , Herbaceous Seasonal Interest , Summer Flowering, Fall Interest, 3 Season Interest Garden Benefits AttractsHummingbirds ResistsDeer ToleratesJuglone SafetyKid Safe FeaturesPet Safe Deadheading Not Needed Low Maintenance Native to North America Award Winner Continuous or Reblooming Flowering Great ForBorders Specimen or Focal Point Wetland Areas & Ponds Container RoleThriller Plant Overview Common Name Summerific® Holy Grail Hibiscus Also Known As Rose Mallow; Hardy Perennial Hibiscus; Swamp Mallow Botanical Name Summerific Holy Grail Hibiscus hybrid USPPAF Brand Proven Winners Simple Plant Spacing Calculator Planting Shape Rectangle Circle Known Area Length (ft) Width (ft) Diameter (ft) Or enter radius below Radius (ft) Known Area (sq ft) Plant Spacing On-Center (in) Pattern Square (grid) Triangular (staggered) Fill edge gaps (max plants) Enter area to see results. Visual Preview Print / Save PDF Powered by SKU: HIBHG Container Sizes Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on type of plant, time of year, last pruning & many other factors. Quart Pot Also Known As: Quart Plant Age: ~ 6 months - 1 year Plant Size: ~ 4"-8" Pot Size: ~ 4.75"H x 4.5"W Volume: 1.50 quarts 2.5 Quart Also Known As: 2.5 Quart Pot Plant Age: ~ 1 - 2 years old Plant Size: ~ 8"-12" Pot Size: ~ 6.5"H x 6.5"W Volume: 2.20-2.30 quarts #1 Pot Also Known As: #1 Container 1 Gallon Plant Age: ~ 1 - 2 years old Plant Size: ~ 10"-14" Pot Size: ~ 7"H x 7.75"W Volume: 2.26-3.73 quarts #2 Pot Also Known As: #2 Container 2 Gallon Plant Age: ~ 1.5 - 3 years old Plant Size: ~ 12"-18" Pot Size: ~ 9.5"H x 9.5"W Volume: 1.19-1.76 gallons #3 Pot Also Known As: #3 Container 3 Gallon Plant Age: ~ 2 - 4 years old Plant Size: ~ 12"-30" Pot Size: ~9.5"H x 11"W Volume: 2.32-2.76 gallons #5 Pot Also Known As: #5 Container 5 Gallon Plant Age: ~3-4 years old Plant Size: ~ 20" - 60" Pot Size: ~11" H x 10 1/2” W Volume: 3.5 - 4 gallons Learn more about container sizes. Best in Class Warranty We stand behind our plants with industry-leading guarantees to give you peace of mind. Arrival Guarantee We want your plants to arrive in great condition! If you notice any issues upon delivery, contact us within 3 days. Free 1-Year Plant Warranty Starting January 1, 2026 all bushes, perennials & trees purchased come with an extended 1-year warranty for added confidence. If your plant dies due to a health issue within a year, we’ll make it right. Learn more about our warranty Plants Shipping Now Plants that are currently in stock typically ship within 2-7 business days after your order is placed. Shipping Destinations Plant Addicts ships to the lower 48 states within the U.S. Unfortunately, we do not currently ship to Alaska, Hawaii, or internationally. This plant cannot be shipped to the following states: AK, HI. These restrictions apply only to this specific plant due to agricultural regulations or other limitations. Other plants may still be available for shipping to these states. If you have any questions about shipping restrictions, feel free to reach out to our team! Close × Summerific® Holy Grail Hibiscus Related Categories ❮ ❯ Close × ! OK Cancel