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- USDA Hardiness Zones 4-9
- Height 4-4.5 Feet Tall
- Spread 4.5-5 Feet Wide
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.
Summerific Holy Grail Hibiscus Plant Facts
| USDA Hardiness Zones: 4-9 |
| Flower Color(s): Red |
| Bloom Period: Summer to Fall |
| Foliage Color(s): Black |
| Light Exposure: Partial Sun to Full Sun |
| Height Class: Tall |
| Height: 4-4.5 Feet |
| Spread: 4.5-5 Feet |
| Spacing: 4.5-5 Feet |
| Habit: Upright |
| Watering: Average |
| Drought Tolerant: No |
| Resists: Deer |
| Attracts: Hummingbirds |
| Features: Fall Interest; Long Blooming |
| Scientific Name: Summerific® Holy Grail Hibiscus hybrid USPPAF |
| Common Name: Summerific® Holy Grail Hibiscus |
| Other Name(s): Rose Mallow; Hardy Perennial Hibiscus; Swamp Mallow |
| Brand: Proven Winners |
- 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.
4.5" Pot
Also Know As:
4.5" Container
Plant Age:
~ 6 months
Plant Size:
~ 3"-6"
Pot Size:
~ 4.5"H x 3.75"W
Volume:
1.42 quarts
Quart Pot
Also Know 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 Know As:
2.5 Quart Pot
Plant Age:
~ 1.5 - 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 Know As:
#1 Container
1 Gallon
Plant Age:
~ 1.5 - 2 years old
Plant Size:
~ 10"-14"
Pot Size:
~ 7"H x 7.75"W
Volume:
2.26-3.73 quarts
#2 Pot
Also Know 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 Know 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
For more detailed information, please click here.
Plant Addict Guarantee (Included On All Plant Orders)
Plant Addicts Warranty - 1 Year (Extra Purchase Required)
Guide: How to Care for Your New Plant(s)
Planter Shipping
Standard Colors: 2-3 business days
Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice
Please Note: On special orders there can not be any cancellations
Plant Shipping
Time of Order:
Summer Shipping
- If there is extreme heat we’ll delay shipping.
- We’ll have to review what areas the plants are traveling through along with your location
Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.
It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.