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•Status in Florida: Native

•Size at Maturity: Typically grows 2 to 4 feet tall and wide

•Phenology: Perennial herb with basal rosette of yucca-like leaves; cylindrical flower heads with small, greenish-white flowers in summer

•Life Cycle: Perennial

•Bloom Season: Summer

•Deciduous, Dioecious, Evergreen: Deciduous

•Sunlight Requirements: Full sun to partial shade

•Soil Texture: Well-drained sandy or loamy soils

•Soil pH: Tolerant of a wide range, but prefers slightly acidic to neutral (pH 5.5-7.0)

•Moisture Requirements: Drought-tolerant once established, prefers moderately moist soil

•Tolerance to Salt Spray: Low tolerance

•Recommended Landscape Uses: Naturalistic landscapes, prairie gardens, butterfly gardens, pollinator gardens

•Maintenance Tips: Low maintenance; cut back dead foliage in late winter or early spring; avoid overwatering

•Considerations: Spiky foliage can be sharp, handle with care; may self-seed in favorable conditions

•Edible: Not typically consumed

•Medicinal Uses: Traditionally used for various medicinal purposes, such as treating snakebites and as a diuretic

•Toxicity to Pets: Not known to be toxic, but spiky foliage may cause irritation

•Florida Native Companion Plant: Blazing star (Liatris spp.), butterfly milkweed (Asclepias tuberosa)

•Wildlife Benefit: Attracts pollinators such as bees and butterflies; provides habitat and food for various insects

Rattlesnakemaster, Eryngium yuccifolium

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  • Bloom Season

    Late Spring through Fall

  • Soil Type

    Moist but well drained

  • Life Span

    Perennial, long lived

  • Sun

    Full Sun to Part Shade

  • Bloom Color

    White, Green

  • Size

    1-2' tall to 1' wide,  with flower spikes reaching 4-5' tall

  • Drought Tolerance

    Tolerant once established

  • Salt Tolerance

    Low/No Tolerance

  • Phenology

    Winter Dormant 

  • pH

    Acidic to Neutral

  • Native Habitats

    Moist/wet sites. Cutthroat seeps, savannas, wet flatwoods, wet prairie, coastal flatwoods

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