{% 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 %}
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{% assign last_slide = forloop.index %} {% endfor %}
All media depicts mature plants.

'Blacknight' Hollyhock (Alcea)

PERENNIAL

Description

  • Six-foot-tall spikes of flowers tower in the garden!
  • Nearly black cup-shaped flowers have yellow centers.
  • Attracts butterflies and hummingbirds.
  • Zones 3-9, sun, 5-6' tall and 24" wide at maturity.
Zone 3-9
Light sun
very tall

{% 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':['3a', '3b', '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/Alcearosea_Blacknight_0003lowres.jpg?v=1672237637', title: 'Blacknight Hollyhock (Alcea)', 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 Try to find a plant that showcases the cottage-core aesthetic as well as 'Blacknight' hollyhock. We'll wait. 'Blacknight' features deep purple-black flowers with a yellow eye, positioned along a single stalk that reaches up to six feet tall. We think this earns it a place in every cottage garden. Its towering height makes it an excellent option for growing against walls and fencelines, or as an eclectic backdrop to low-growing perennials. 'Blacknight' is especially attractive to hummingbirds and butterflies. Though it may require some staking, this hollyhock will be a reliable and intriguing perennial in your garden.

Hollyhocks (or Alcea) have long been an old-fashioned cottage garden staple. This sun-loving classic boasts vibrant flowers, tall stems, and prominent lower foliage, which makes quite a statement in the landscape. Hollyhocks are easy to grow in rich soil and are fairly low maintenance, only requiring a heavy trim after flowering. Even near black walnut trees, hollyhocks manage to find a way to shine. Plant it as a specimen or in masses for a tall wall of color that will never cease to impress! Details Botanical name: Alcea rosea ‘Blacknight’
Common name: Hollyhock
Zone: 3-9
Sun exposure: Sun (6+ hours sun)
Height x width: 5-6' X 24"
Flower color: Deep purple to black
Foliage color: Green
Season of Interest: Summer
Bloom time: Summer
Features: Rabbit resistant, juglone tolerant
Uses: Background, border How To Grow Soil: Rich, moist, well-drained soil.
Light: Full sun
Water: Average, keep well-watered until established, once established they can tolerate some drought.
Spacing: 24 inches
Fertilizing: Hollyhocks benefit from light fertilizer in the spring.
Winterizing: prune back 6-8 inches above the ground before over-wintering. Additional mulching is optional. ‘Blacknight’ is a hardy perennial unlike other varieties of Hollyhock.
Maintenance & Pruning: Prune back after flowering to 6-8 inches above the ground. Staking may be required in high wind locations.

Life In The Garden

Pollinator-Friendly Perennials to Keep Your Garden Buzzing

Pollinators play a vital role in our ecosystems, gardens, and especially our food chain. Flowers produce pollen as a means of reproduction. While there are so many pollinator-friendly plants to choose from, here are seven of our favorites. You’ll love them, and the pollinators will too.

Learn more

Customer Reviews

Based on 11 reviews
64%
(7)
9%
(1)
0%
(0)
18%
(2)
9%
(1)
D
D.E. (Colorado)

It came with many crispy leaves and it did not survive after it was planted in the ground

We're sorry you're having trouble with your plants. Our team of horticulture experts would love to take a closer look! Please contact us at claims@greatgardenplants.com with your order number and photos of the plants so we can better assist you. All orders are covered by our 60-day guarantee. We look forward to helping! https://bit.ly/ggp-guarantee

M
M.V.
A bit dramatic

This is a beautiful plant. I can't wait for it to become established. It does require watered frequently. It will definitely let you know when it needs water.
It arrived 6/6/24, and it is now 6/11/24. It arrived alive and well.

User picture
D
D.W. (Iowa)

Dear Great Garden Plants

Just ordered another three plants from your business! The delivery service said today that they delivered those plants!!! No delivery!

C
C.B. (Missouri)
Love them

Arrived quickly...healthy..well packaged

J
J.T. (Virginia)
Dead

My plant looked fairly pitiful when opened. I thought that it would perk back up once planted and given some needed TLC. However, the plant never bounced back shriveled and died within just a few days.

We're sorry you're having trouble with your plants. Our team of horticulture experts would love to take a look. Please contact us at claims@greatgardenpants.com with your order number and photos of the plants. Our customer service team would love to hear more from you about your experience with this plant. All orders are covered by our 60-day guarantee. We look forward to helping! https://bit.ly/ggp-guarantee

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