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DAHLIA 'Bjorn'

Image of Dahlia 'Bjorn'

James H. Schutte

Family

Asteraceae

Botanical Name

DAHLIA 'Bjorn'

Plant Common Name

Bjorn Dahlia, Dahlia, Formal Decorative Dahlia

Special Notice

This entry has yet to be reviewed and approved by L2G editors.

General Description

Few garden plants rival dahlias as everblooming bedding plants and cutflowers. The selection 'Bjorn' is a herbaceous, warm-season, tender perennial with bulbous underground tubers. Its compound green foliage is made of oval and pointed leaflets with toothed margins. The 5-inch (12 cm), formal double (extra petals) flowers are dark red and long-lasting. The petal rows overlap to create a full, perfectly shaped flower head. It is good to remove the spent flowers to encourage continued flower production up until frost. The hybrid 'Bjorn' was introduced around 1995.

Dahlias prefer well-drained, fertile soil and full to partial sun. The most beautiful flowers occur when nights are comfortably cool and days warm and sunny. Hybrid dahlias are often grown from divisions of tuberous roots and cuttings to preserve their unique characteristics. Dahlias are cold sensitive and their tuberous roots should be lifted and overwintered in cool dry locations where winters are harsh. In hot, humid subtropical regions the dahlia is best grown in the late fall and winter with the start of the dry season.

Characteristics

  • AHS Heat Zone

    12 - 1

  • USDA Hardiness Zone

    8 - 11

  • Sunset Zone

    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

    Bulb or Corm or Tuber

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    18"-36" / 45.7cm - 91.4cm

  • Width

    1'-2' / 0.3m - 0.6m

  • Native To

    Hybrid Origin

Growing Conditions

  • Soil pH

    Neutral

  • Soil Drainage

    Well Drained

  • Soil type

    Loam, Sand

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Dark Red

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green, Dark Green

  • Foliage Color (Fall)

    Green, Dark Green

  • Fragrant Flowers

    No

  • Fragrant Fruit

    No

  • Fragrant Foliage

    Yes

  • Bark or Stem Fragrant

    No

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Coarse

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Container, Cutflower, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    No