{% assign use_variant_images = false %}
{% capture vertical_scroll %}{% endcapture %} {%- if use_variant_images and variant.images[0] -%} {%- assign images = variant.images -%} {%- else -%} {%- assign images = product.images -%} {%- endif -%}
{% assign last_slide = 0 %} {% assign imgOffset = 0 %} {% if product.tags contains 'Graphic Overlay' %} {% assign imgOffset = 1 %} {% endif %} {%- for image in images offset: imgOffset -%} {% capture thumbRepsonsive %} {%- if image != blank -%} {%- if image.width > 180 -%}{{ image.src | img_url: '180x' }} 180w {{ 180 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 360 -%}{{ image.src | img_url: '360x' }} 360w {{ 360 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 540 -%}{{ image.src | img_url: '540x' }} 540w {{ 540 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 720 -%}{{ image.src | img_url: '720x' }} 720w {{ 720 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 900 -%}{{ image.src | img_url: '900x' }} 900w {{ 900 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 1080 -%}{{ image.src | img_url: '1080x' }} 1080w {{ 1080 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 1296 -%}{{ image.src | img_url: '1296x' }} 1296w {{ 1296 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 1512 -%}{{ image.src | img_url: '1512x' }} 1512w {{ 1512 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 1728 -%}{{ image.src | img_url: '1728x' }} 1728w {{ 1728 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 1944 -%}{{ image.src | img_url: '1944x' }} 1944w {{ 1944 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 2160 -%}{{ image.src | img_url: '2160x' }} 2160w {{ 2160 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 2376 -%}{{ image.src | img_url: '2376x' }} 2376w {{ 2376 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 2592 -%}{{ image.src | img_url: '2592x' }} 2592w {{ 2592 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 2808 -%}{{ image.src | img_url: '2808x' }} 2808w {{ 2808 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- if image.width > 3024 -%}{{ image.src | img_url: '3024x' }} 3024w {{ 3024 | divided_by: image.aspect_ratio | round }}h,{%- endif -%} {%- assign image_size = image.width | append: 'x' -%} {{ image.src | img_url: image_size }} {{ image.width }}w {{ image.height }}h {%- endif -%} {% endcapture %}
{% assign last_slide = forloop.index %} {% endfor %}
All media depicts mature plants.

Summerific® 'Holy Grail' Perennial Hibiscus

PERENNIAL

Description

  • Red blooms shine all summer long!
  • Dramatic purple-black foliage stands out in the landscape.
  • Very easy to grow.
  • Ideal specimen plant.
  • Zones 4-9, sun, 4.5' tall x 4.5' wide at maturity. 
Zone 4-9
Light sun
medium

{% capture DiscountGroup %}1{% endcapture %} {% capture DiscountTier %}1{% endcapture %} {% assign DiscountGroup = DiscountGroup | plus: 0 %} {% assign DiscountTier = DiscountTier | plus: 0 %} {% assign discount_amount = 0 %} {% for group in product.discounts_structure.groups %} {% if group.id == DiscountGroup %} {% for tier in group.tiers %} {% if tier.id == DiscountTier %} {% for discount in tier.discount %} {% if discount.min_quantity > variant.quantity %}{% break %}{% endif %} {% assign discount_amount = discount.discount_amount | times: 100 %} {% endfor %} {% break %} {% endif %} {% endfor %} {% break %} {% endif %} {% endfor %} {% if variant.price < variant.compare_at_price %} Sale {{- variant.price | minus: discount_amount | money | remove: ' ' -}}
{{- variant.compare_at_price | money | remove: ' ' -}} {% else %} {{- variant.price | money | remove: ' ' -}} {% endif %} Each

Buy More, Save More:
    {% for discountGroup in product.discounts_structure.groups %} {% if discountGroup.id == 1 %} {% for discountTier in discountGroup.tiers %} {% if discountTier.id == 1%} {% for discount in discountTier.discount %}
  • {% assign discount_amount = discount.discount_amount | times: 100 %} {% assign tier_ceiling = 10000 %} {% if discountTier.discount[forloop.index] != blank %}{% assign tier_ceiling = discountTier.discount[forloop.index].min_quantity | minus: 1 %}{% endif %}
    {{ variant.price | money | remove: ' ' }} {{ variant.price | minus: discount_amount | money | remove: ' ' }} / {{ discount.min_quantity }}{% if discountTier.discount[forloop.index] != blank %}-{{ discountTier.discount[forloop.index].min_quantity | minus: 1 }}{% else %}+{% endif %} qty.
  • {% endfor %} {% endif %} {% endfor %} {% endif %} {% endfor %}
Total
{% capture DiscountGroup %}1{% endcapture %} {% capture DiscountTier %}1{% endcapture %} {% assign DiscountGroup = DiscountGroup | plus: 0 %} {% assign DiscountTier = DiscountTier | plus: 0 %} {% assign discount_amount = 0 %} {% for group in product.discounts_structure.groups %} {% if group.id == DiscountGroup %} {% for tier in group.tiers %} {% if tier.id == DiscountTier %} {% for discount in tier.discount %} {% if discount.min_quantity > variant.quantity %}{% break %}{% endif %} {% assign discount_amount = variant.quantity | times: discount.discount_amount | times: 100 %} {% endfor %} {% break %} {% endif %} {% endfor %} {% break %} {% endif %} {% endfor %}
{{ variant.price | times: variant.quantity | minus: discount_amount | money | remove: ' ' }}
{% if discount_amount > 0 %} Saved {{ discount_amount | money | remove: ' ' }} {% endif %}
{% for option in product.options_with_values %} {% assign optionIndex = forloop.index0 %} {% assign position = forloop.index %}
{{option.name}}
{% assign sortedvalues = option.values %} {% if option.name contains 'Length' or option.name contains 'Width' or option.name contains 'Height' or option.name contains 'Depth' or option.name contains 'Thickness' or option.name contains 'Weight' %} {% assign sortedvalues = option.values | sort %} {% endif %} {% for value in sortedvalues %} {% assign inventory_quantity = 0 %} {% assign available = false %} {% assign optionVariant = false %} {% if product.options_with_values.size == 3 and optionIndex == 2%} {% for v in product.variants %} {% unless v.bogus %} {% if v.option1 == variant.option1 and v.option2 == variant.option2 and v.option3 == value %} {% assign optionVariant = v %} {% assign inventory_quantity = inventory_quantity | plus: v.inventory_quantity %} {% if v.available %}{% assign available = true %}{% endif %} {% endif %} {% endunless %} {% endfor %} {% elsif product.options_with_values.size == 2 and optionIndex == 1%} {% for v in product.variants %} {% unless v.bogus %} {% if v.option1 == variant.option1 and v.option2 == value %} {% assign optionVariant = v %} {% assign inventory_quantity = inventory_quantity | plus: v.inventory_quantity %} {% if v.available %}{% assign available = true %}{% endif %} {% endif %} {% endunless %} {% endfor %} {% else %} {% for v in product.variants %} {% unless v.bogus %} {% if v.option1 == value %} {% assign optionVariant = v %} {% assign inventory_quantity = inventory_quantity | plus: v.inventory_quantity %} {% if v.available %}{% assign available = true %}{% endif %} {% endif %} {% endunless %} {% endfor %} {% endif %} {% assign checked = "" %} {% if variant.options[optionIndex] == value%}{% assign checked = "checked" %}{% endif %} {% endfor %}
{% endfor %}
{% capture add_to_cart %}Neptune.cart.add({ id:{{ variant.id | json }}, quantity:{{ variant.quantity }}, properties:{ '_growingzone':['4a', '4b', '5a', '5b', '6a', '6b', '7a', '7b', '8a', '8b', '9a', '9b'],'shipping_exclusions':''} }, '.atcprod-{{ variant.id }}', { quantity: {{ variant.quantity }}, image: '//www.greatgardenplants.com/cdn/shop/products/hibiscus-summerific-holy-grail-3-sw.jpg?v=1643397982', title: 'Summerific® Holy Grail Perennial Hibiscus', option: 'One Quart' }); return false;{% endcapture %} {% assign discontinued = '' %} {% for tag in product.tags %} {% if tag contains 'discontinued' %} {% assign discontinued = 'true' %} {% endif %} {% endfor %} {% if variant.available %} {% else %} {% unless discontinued == 'true' %} Notify Me When Available {% endunless %} {% endif %}
{% if error %}
{{error.description}}
{% endif %}
white plant in hand icon

Hand-picked at our greenhouse

white shipped to door icon

Shipped to your door

Young plant icon

Arrives as young plant

background image

More Information

Description Summerific ‘Holy Grail’ hibiscus (aka rose mallow or Hibiscus moscheutos) from Proven Winners will be one of the true head-turners in your garden or landscape. Just look at the richness and uniqueness of this color scheme: deep red flowers and near-black foliage. The show begins mid-summer and lasts for weeks beyond, providing a dramatic display of enormous dish-shaped blooms. It looks fabulous with yellow flowering plants like black-eyed Susan or coreopsis. Summerific hibiscus from Proven Winners are herbaceous perennials, so unlike their close cousin rose of Sharon, they die back to the ground in fall and begin each year fresh in spring. They are one of the latest perennials to emerge in spring, but watching them transform from tiny buds to big, healthy plants in a matter of weeks is nothing short of delightful. These are great plants for beginners – anyone, really! Details Botanical name: Hibiscus x 'Holy Grail'
Patent: USPP 31,478
Common name: Hibiscus, perennial hibiscus, rose mallow, swamp mallow, hardy hibiscus
Zone: 4 - 9
Sun exposure: Sun (> 6 hours sun)
Height x width: 4- 4.5' tall and wide
Flower color: Red
Foliage color: Black
Season of interest: Summer
Bloom time: Midsummer, late summer, early fall
Features: Rain gardens, Proven Winners, heat tolerant, deer resistant, cold tolerant
Uses: Flower gardens, landscaping, specimen, flowering hedge
How To Grow Soil: Plant in any sunny spot. Can tolerate wet soil once established; if grown in dry conditions, growth and blooming may be compromised.
Light: Full sun (> 6 hours sun) is best.
Water: Average to high.
Space: 4.5 - 5'
Fertilizing: Fertilize in early spring, once the ground has thawed, with a granular rose fertilizer.
Winterizing: No special treatment is required; Stems can be cut off once the plant has gone dormant in late autumn as they do not add any considerable interest. 2-3" of mulch is recommended.
Maintenance: Little needed. Perennial hibiscus is one of the very last plants to emerge each spring. Be patient! Once they begin to show buds, they will start to grow quickly.

Did You Know?

10 Native Plants (& Nativars) To Grow This Year

Support pollinators and local wildlife by growing natives. We offer over 200 plants native to North America, and we've compiled a list of our favorites that will happily call your garden home.

Customer Reviews

Based on 6 reviews
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J
J. (Texas)
Thriving almost a year later!

Last year I left a review for the Holy Grail hibiscus in August. This year I am here to update. They are gorgeous. Unfortunately, I still have not planted them in the ground. The area I intended for them to go is not ready yet. I did upgrade them to a larger pot and they are content in there for now. All 3 of the ones I ordered came back after the winter. I cut them back after the last frost and they started to sprout around April and are packed with buds and starting to bloom. I can only imagine how huge they will get after planted in the ground.

D
D.F. (Illinois)
Hibiscus

My Holy Grail hibiscus is doing just fine. I will be so glad when it is really big.

J
J. (Texas)
Great first time buy!

I’ve never ordered plants online before. So far, it has been a pleasant experience with Great Gardens. I ordered 3 Summerific Holy Grail plants after seeing them on an online vlog. It was buy 2 plants get a lavender plant free. You can’t beat free plants. They arrived in a timely manner and thankfully made it to Houston in this excessive heat. They were healthy, happy, and still moist upon arrival. Unfortunately, the lavender did not make it. It was not in the best shape when it arrived. I think it got too humid in the packaging. I attempted to save it, but it spontaneously combusted after being in our heat for a day. Oh well, it was free! My main concern was the plants I paid for. They are thriving right now on our covered patio. When it cools off a bit I will prep them for planting. I was so impressed with packaging I ordered 3 for my dad. He said one of his was a little weak upon arrival, but he is giving it time to adjust before planting. I appreciated the magazine included in my packaging and all the coupons that I’ve received since my order. You guys really know how to reel in the crazy plant people. 😉

S
Sara

Great plants

r
r. (Ohio)
Totally happy with my first online purchase from Great Garden Plants

Shipping was very quick. When I received my plants, I found them to be securely packaged and very healthy. Thanks to more summer rain than usual, they took off very well. They bloomed right at planting and a second round of blooms soon.