Black Hollyhock

Cornflower

About Black Hollyhock and Cornflower

Black Hollyhock

Cornflower

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What is

Life Span

Perennial

Annual and Perennial

Type

Perennial

Flowering Plants, Shrubs

Origin

Asia

World/Pandemic, North America, Europe, Russia/Siberia, China, Korea

Types

Bigleaf hydrangea, Hortensia, Smooth hydrangea, Oakleaf hydrangea, Annabelle

Number of Varieties

100100

0 40000

👆🏻

Habitat

Forest edges, Hillside, Woods

USDA Hardiness Zone

3-92-11

0 99

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AHS Heat Zone

10*3

7 - 1

Sunset Zone

21,22

7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24

Habit

Upright/Erect

Information

Plant Size

Minimum Height

15.00 cm30.00 cm

0 3900

👆🏻

Minimum Width

61.00 cm30.00 cm

0 6350

👆🏻

Plant Color

Flower Color

Chocolate, Black

Blue, Sky Blue, Indigo, Dark Blue

Flower Color Modifier

Bicolor

Fruit Color

Brown, Sandy Brown

Leaf Color in Spring

Light Green

Sea Green, Gray Green

Leaf Color in Summer

Light Green

Sea Green, Gray Green

Leaf Color in Fall

Light Green

Sea Green, Gray Green

Leaf Color in Winter

Light Green

Shape

Leaf Shape

Oblovate

Thorns

✔ ✘

Season

Plant Season

Summer

Spring, Summer, Fall

Growing Conditions

Sunlight

Full Sun, Partial Sun

Growth Rate

Medium

Very Fast

Type of Soil

Loam

Loam, Sand

The pH of Soil

Neutral

Acidic, Neutral, Alkaline

Soil Drainage

Well drained

Bloom Time

Early Summer, Summer

Indeterminate

Repeat Bloomer

✔ ✘

Tolerances

Drought

Care

Where to Plant?

Container, Ground

Container, Ground, Pot

How to Plant?

Seedlings, Stem Planting

Seedlings

Plant Maintenance

Medium

Watering Plants

Watering Requirements

Keep ground moist, Requires a lot of watering, Requires regular watering, Requires watering in the growing season

In Summer

Average Water

Lots of watering

In Spring

Moderate

In Winter

Average Water

Soil

Soil pH

Neutral

Slightly Acidic

Soil Type

Loam

Loamy

Soil Drainage Capacity

Well drained

Loamy

Sun Exposure

Full Sun, Partial Sun

Full Sun

Pruning

Remove damaged leaves, Remove dead branches, Remove dead leaves

Prune to control growth, Remove damaged leaves, Remove dead branches, Remove dead leaves

Fertilizers

All-Purpose Liquid Fertilizer

Compost

Pests and Diseases

Red blotch

Bacterial leaf spot, Botrytis Blight, Leafminers, Mealybugs, Mushroom root rot

Plant Tolerance

Drought

Facts

Flowers

Showy

Flower Petal Number

Single

Fruits

Showy Fruit

✔ ✘

Edible Fruit

✔ ✘

Fragrance

Fragrant Flower

✔ ✘

Fragrant Fruit

✔ ✘

Fragrant Leaf

✔ ✘

Fragrant Bark/Stem

✔ ✘

Showy Foliage

✔ ✘

Showy Bark

✔ ✘

Foliage Texture

Coarse

Medium

Foliage Sheen

Matte

Evergreen

✔ ✘

Invasive

✔ ✘

Self-Sowing

✔ ✘

Attracts

Bees, Flies

Butterflies

Allergy

Chest tightness, Diarrhea, Dizziness, Nausea, Vomiting

Benefits

Uses

Aesthetic Uses

Beautification, Bouquets, Landscape Designing, Showy Purposes

Beauty Benefits

Edible Uses

✔ ✘

Environmental Uses

Air purification

Air purification, Food for insects, Indoor Air Purification, Prevent Soil Erosion, Very little waste

Plant Benefits

Medicinal Uses

Fever, Kidney problems, Urinary tract problems

Part of Plant Used

Flowers, Root

Other Uses

Can be made into a herbal tea, Decoration Purposes, Employed in herbal medicine, Showy Purposes, Used as Ornamental plant, Used for its medicinal properties

Used As Indoor Plant

✔ ✘

Used As Outdoor Plant

✔ ✘

Garden Design

Feature Plant, Mixed Border

Container, Herb

Scientific Name

Botanical Name

ALCEA rosea 'Nigra'

CENTAUREA cyanus

Common Name

Black Hollyhock, Hollyhock

Batchelor's Buttons, Cornflower

In Hindi

Hydrangea

In German

Hortensie

In French

Hortensia

In Spanish

Hortensia

In Greek

υδραγεία

In Portuguese

Hortênsia

In Polish

Hortensja

In Latin

Hibiscus

Classification

Kingdom

Plantae

Phylum

Anthophyta

Class

Magnoliopsida

Order

Asterales

Family

Malvaceae

Asteraceae

Genus

Centaurea

Clade

Angiosperms, Asterids, Eudicots

Tribe

Cynareae

Subfamily

Carduoideae

Number of Species

60250

1 27800

👆🏻

Properties of Black Hollyhock and Cornflower

Wondering what are the properties of Black Hollyhock and Cornflower? We provide you with everything About Black Hollyhock and Cornflower. Black Hollyhock doesn't have thorns and Cornflower doesn't have thorns. Also Black Hollyhock does not have fragrant flowers. Black Hollyhock has allergic reactions like Chest tightness, Diarrhea, Dizziness, Nausea and Vomiting and Cornflower has allergic reactions like Chest tightness, Diarrhea, Dizziness, Nausea and Vomiting. Compare all the properties and characteristics of these two plants. Find out which of these plant can be used as indoor plant. If you are interested to decorate your house and garden, find out aesthetic uses, compare them and select the plant which will beautify your surrounding. Along with beautification, try comparing medicinal and edible uses of Black Hollyhock and Cornflower and you can choose the plant having best and most benefits.

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Season and Care of Black Hollyhock and Cornflower

Season and care of Black Hollyhock and Cornflower is important to know. While considering everything about Black Hollyhock and Cornflower Care, growing season is an essential factor. Black Hollyhock season is Summer and Cornflower season is Summer. The type of soil for Black Hollyhock is Loam and for Cornflower is Loam, Sand while the PH of soil for Black Hollyhock is Neutral and for Cornflower is Acidic, Neutral, Alkaline.

Black Hollyhock and Cornflower Physical Information

Black Hollyhock and Cornflower physical information is very important for comparison. Black Hollyhock height is 15.00 cm and width 61.00 cm whereas Cornflower height is 30.00 cm and width 30.00 cm. The color specification of Black Hollyhock and Cornflower are as follows:

Black Hollyhock flower color: Chocolate and Black
Black Hollyhock leaf color: Light Green
Cornflower flower color: Blue, Sky Blue, Indigo and Dark Blue
Cornflower leaf color: Sea Green and Gray Green

Care of Black Hollyhock and Cornflower

Care of Black Hollyhock and Cornflower include pruning, fertilizers, watering etc. Black Hollyhock pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves and Cornflower pruning is done Prune to control growth, Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Black Hollyhock needs Average Water and in winter, it needs Average Water. Whereas, in summer Cornflower needs Lots of watering and in winter, it needs Average Water.