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    • Photo of Casuarina glauca cones by Kevin Thiele

    Photo by Kevin Thiele

    This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.

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    Casuarina glauca

    Also Known As

    • Grey Oak
    • River Oak
    • Swamp Oak
    • Swamp She-Oak

    Plant type

    tree, shrub

    size

    • H: 7'-30'
    • W: 7'-30'

    planting zones

    • 7b-10b

    Casuarina glauca plant details

    Casuarina glauca is a broadleaf evergreen shrub or tree with blue and green foliage. Features glaucous texture. Grows well with sun and occasional - low water. Drought tolerant once established. Prefers to be dry in summer. Does well in lean and well-drained soil. A good option if you're seeking something heat tolerant.

    CHARACTERISTICS OF Casuarina glauca

    Plant type: shrub or tree
    Plant family: casuarinaceae
    Foliage: evergreen blue and green
    Mature size: 7 FT - 30 FT - wide, 7 FT - 30 FT - tall
    Uses: year round interest

    GROWING CONDITIONS for Casuarina glauca

    USDA Zones: 7b - 10b
    Sun exposure: sun
    Watering frequency: occasional - low
    Resistant to: deer, heat
    Soil needs: lean and well-drained

    Nursery contributed plant descriptions

    A most attractive Australian "she-oak,” this from seed collected at some elevation. A medium tree, to 30 ft or more, with wispy, blue foliage, the "leaves" expressed as tiny scales on small, multi-branched stems and providing wispy blue foliage. Full sun is best for blueness. Very drought tolerant but accepts summer water as well. Evergreen in USDA zone 8 and up; surprisingly perennial in zone 7. Impressive. Very good container subject. Somewhat invasive in Florida and Hawaii.

    By: Cistus Nursery

    Gardening facts about Casuarina glauca plant

    How to Grow Casuarina glauca

    • Sun Exposure

      • sun

    • Water Needs

      • occasional - drought tolerant

    • Water Needs

      • dry in summer

    • Soil Needs

      • lean
      • well-drained

    • Special Situation

      • heat tolerant

    Features

    • Foliage Color

      • green
      • blue

    • Wildlife

      • deer resistant

    • Foliage Season

      • evergreen

    • Texture

      • glaucous

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