Advanced Search Filters

Plant Type
Hardiness Zone
Heat Zone
Sunset Zone
Function
Sun Exposure
Soil Moisture
Water Requirement

HELIANTHUS annuus 'Solara'

Image of Helianthus annuus 'Solara'

Ernst Benary® Inc.

Family

Asteraceae

Botanical Name

HELIANTHUS annuus 'Solara'

Plant Common Name

Annual Sunflower

General Description

Bred for the cutflower industry, the large-flowered 'Solara' is equally suited to cutting gardens and vegetable borders. This Ernst Benary introduction has uniform blooms with large chocolate brown eyes surrounded by short, gold petals. The flowers are borne on medium-sized plants with long strong stems.

The sunflower is one of the most cheerful and distinctive garden flowers. Its big bold daisies track the sun, hence the common name. This warm season annual is uncommonly easy to grow and economically important for the production of sunflower seeds, for human consumption, cooking oil and birdseed, as well as cutflowers for the florist’s industry. It is a New World native that exists throughout the whole of North America down to Central America. Natural populations can vary widely in height but most are tall, upright with multiple side branches that extend from a sturdy central stem.

Sunflower leaves are very distinctive. They are large, medium green and heart-shaped with a rough and slightly hairy surface. Sunflowers grow and bloom when temperatures are warm and summery. Mature plants produce huge daisies with a broad “eye” of disc flowers surrounded by lots of ray petals. Bloom color is typically golden yellow but lemon yellow, bronze, burgundy, red, orange and white cultivars are also available. The fresh flowers draw lots of insect pollinators, including bees and butterflies. It is essential to keep the spent flowers up because the seeds within the drying heads are beloved by birds and mammals.

Grow sunflowers in full sun and average soil with good drainage. It is best to directly sow the seeds in the ground in the late spring. Tall plants with few side branches may require staking—sunflowers often fall when subjected to high winds and heavy rain. After flowering and setting seed, sunflower plants die, so they are not long-lived. If you desire continuous sunflowers, plant seeds every two weeks in succession until midsummer. These outstanding annuals make superb additions to cutting garden or vegetable plots. Children also love them because they are fun to plant and grow. Sunflower heads can also be cut with their seeds intact, dried indoors and brought outside to feed wildlife in winter.

Sunflowers emit a substance from their roots and germinating seeds that inhibits the germination of other seeds around them.

Characteristics

  • AHS Heat Zone

    12 - 1

  • Sunset Zone

    A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24

  • Plant Type

    Annual

  • Sun Exposure

    Full Sun

  • Height

    4'-5' / 1.2m - 1.5m

  • Width

    2'-3' / 0.6m - 0.9m

  • Bloom Time

    Summer, Late Summer, Early Fall, Fall, Indeterminate

  • Native To

    North America, Mexico, Central America

Growing Conditions

  • Soil pH

    Neutral, Alkaline

  • Soil Drainage

    Well Drained

  • Soil type

    Clay, Loam, Sand

  • Growth Rate

    Very Fast

  • Water Requirements

    Drought Tolerant, Average Water

  • Habit

    Upright/Erect

  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Yellow, Gold, Chocolate

  • Flower Color Modifier

    Bicolor

  • Fruit Color

    Chocolate, Ivory, Black

  • Fruit Color Modifier

    Striped/Striated

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    Yes

  • Showy Foliage

    No

  • Foliage Texture

    Coarse

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Cutflower, Edible, Herb / Vegetable, Mixed Border, Wildflower

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Birds, Butterflies

  • Self-Sowing

    Yes