{% 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 %} {%- for image in images offset: imgOffset -%}
{% capture ImageResponsive %} {%- 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 %}
{% if forloop.first or product.tags contains 'Graphic Overlay'%}
{% endif %}
{% assign last_slide = forloop.index %} {% endfor %}
{% 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.
  • Cold-hardy hibiscus, 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

{% assign discount_amount = 0 %} {% 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
Total
{{ variant.price | times: variant.quantity | money | remove: ' ' }}
{% 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 %}
More Info on Plant Sizes

{% 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'] } }, '.atcprod-{{ variant.id }}', { quantity: {{ variant.quantity }}, image: '//www.greatgardenplants.com/cdn/shop/products/hibiscus-summerific-holy-grail-5-sw.jpg?v=1626783358', 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 %}
View Detailed Plant Information
↓

Plant Spacing

Plant spacing is based on the ultimate width of the plants. This figure is normally given as a range; for example, 3-5’. If you live in a cold climate and/or want plants to fill in more quickly, plan to space at the shorter end of the range. If you live in a warm climate, are on a limited budget, or are willing to wait longer for plants to touch, use the higher end of the range. Using the larger number is recommended when calculating distance from a building or structure. There’s really no such thing as "maximum spacing": if you don’t want your plants to touch, you can space them as far apart as you’d like. All plant spacing is calculated on center, or in other words, the centers of the plants are spaced one half of their eventual width apart:

bush distance

Unless you are planting in a straight line, as you might for hedges or edging, space your plants in a staggered or zig-zag pattern for a more interesting and naturalistic look:

bush distance zigzag
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.

Discover More

Customer Reviews

Based on 12 reviews
92%
(11)
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8%
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A
A.M. (Indiana)
Summerific Holy Grail Hibiscus

I ordered 2 of these. They came very well packaged with superb instructions on how to plant. So far they are holding up well.

A
A.D. (New York)

Plants were smaller than I expected because they were trimmed before shipping.with only a 60 day

Plants were smaller than expected because they were trimmed back before shipping.
With only a 60 day guarantee I hope they will survive the winter!

K
K.P. (Kentucky)
Awesome

We have had a great experience with this company! By phone, Awsome!!
Shipping was quick and plants were packed very well!!
Will be using this company in the future!!!
Thank you!!!!😊

M
M.L.

Beautiful flowers I almost lost it

K
K.H.

Arrived in beautiful condition! Planted immediately! Cannot wait to see how they blossom!!!

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