Photo of Isopogon trilobus flower by Waltzing Matilija

Photo by Waltzing Matilija

Used with permission, all rights reserved

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Isopogon trilobus

Also Known As

  • Barrel Cone Flower

Plant type

shrub

size

  • H: 3'
  • W: 2'

planting zones

  • 9b-11

Isopogon trilobus plant details

Isopogon trilobus is a broadleaf evergreen shrub with green foliage. In spring and summer yellow flowers emerge. Grows well with sun - mostly sun and low water. Prefers to be dry in summer. Does well in well-drained soil.

CHARACTERISTICS OF Isopogon trilobus

Plant type: shrub
Plant family: proteaceae
Foliage: evergreen green
Mature size: 2 FT wide, 3 FT tall
Flowers: yellow blooms in spring and summer

GROWING CONDITIONS for Isopogon trilobus

USDA Zones: 9b - 11
Sun exposure: sun - mostly sun
Watering frequency: low
Soil needs: well-drained

Nursery contributed plant descriptions

This medium-sized shrub has distinctive three-lobed leaves with soft pink/red new growth, similar to Adenanthos. The terminal flowers appear in Spring and persist for several weeks. Tip pruning from a young age is recommended to keep the plant looking full and encourages more flowers. Provide a location with good drainage and airflow for best results. A spot in full sun will produce the best flowers but it can handle part shade too. Expect a mature size of around 3' high and slightly less wide. Hardy to around 26 °F.

Gardening facts about Isopogon trilobus plant

How to Grow Isopogon trilobus

  • Sun Exposure

    • sun - mostly sun
  • Water Needs

    • low
  • Water Needs

    • dry in summer
  • Soil Needs

    • well-drained

Features

  • Foliage Color

    • green
  • Flower Color

    • yellow
  • Flower Season

    • spring
    • summer
  • Foliage Season

    • evergreen

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