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PHLOX drummondii '21st Century Crimson'

Image of Phlox drummondii '21st Century Crimson' (21ST CENTURY SERIES)

Family

Polemoniaceae

Botanical Name

PHLOX drummondii '21st Century Crimson'( 21ST CENTURY SERIES)

Plant Common Name

Annual Phlox

Special Notice

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

General Description

The pretty and easy-to-grow, heat tolerant 21st Century Series Crimson phlox bears clusters of starry flowers that are fiery red with deeper crimson tints. The compact, mounding plants produce side branches readily, forming a full specimen and bloom across the heat of summer, not just in spring and fall. This low, mounding, frost-tender annual is a highly bred selection of the Texas native Phlox drummondii.

Small, narrow, lance-shaped leaves adorn the tender stems. Tiny hairs cover the leaves and stems and give the plants a sticky sensation when touched. The flowers appear a few weeks after the seeds germinate. The five-petaled blooms are tubular at the base and flattened and radial at the mouth. The bright blood red blossoms attract hummingbirds and butterflies and have a light, sweet scent.

Grow annual phlox in full sun and fertile, well-drained garden soil. Plant it outdoors only after the danger of frost has passed. Better tolerant of summertime heat, they may also be planted as a winter annual in hot climates. This cultivar offers a pretty show with unique coloration in seasonal annual beds and along container edges.

Characteristics

  • AHS Heat Zone

    12 - 1

  • Sunset Zone

    A2, A3, H1, 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, Partial Sun

  • Height

    7"-10" / 17.8cm - 25.4cm

  • Width

    8"-12" / 20.3cm - 30.5cm

  • Bloom Time

    Indeterminate

  • Native To

    Texas

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam, Sand

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Cushion/Mound-forming

  • Seasonal Interest

    Spring, Summer, Fall

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    Red

  • Foliage Color (Spring)

    Green

  • Foliage Color (Summer)

    Green

  • Foliage Color (Fall)

    Green

  • Foliage Color (Winter)

    Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    Yes

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    No

  • Foliage Texture

    Fine

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Bedding Plant, Container, Feature Plant, Groundcover, Hanging Basket, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Hummingbirds, Butterflies

  • Self-Sowing

    Yes