Box Micrantheum

(Micrantheum hexandrum)

Box Micrantheum (Micrantheum hexandrum)

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Climate Requirements

Precipitation 26" - 54"
High Temp. 68°F - 80°F
Low Temp. 32°F - 42°F

Summary

Micrantheum hexandrum, commonly known as Box Micrantheum, is a monoecious shrub native to montane and subalpine regions in eastern Australia, including Queensland, New South Wales, Victoria, and Tasmania. It is typically found in moist eucalypt forests, heathlands, and along watercourses at higher altitudes. This erect shrub can grow to about 6.5 feet tall and features oblong to narrowly lance-shaped leaves. From October to February, it produces small, inconspicuous white flowers with six or nine stamens, which are not particularly showy but are of ecological importance for local pollinators.

Box Micrantheum is valued for its hardiness and ability to thrive in cool, moist conditions, making it suitable for cultivation in similar climates. It is often used in native plant gardens and as part of revegetation projects where its local provenance is an advantage. Gardeners should provide it with well-drained, acidic to neutral soils. It prefers part shade to full sun exposure. While not widely known for ornamental use, its resilience and ecological role in supporting native fauna make it a beneficial addition to conservation-focused landscapes. There are no major diseases or pests reported, but it may not be suitable for very dry or warm climates.CC BY-SA 4.0

Plant Description

  • Plant Type: Shrub
  • Height: 0.3-1 feet
  • Width: 2-3 feet
  • Growth Rate: Moderate
  • Flower Color: White
  • Flowering Season: Spring
  • Leaf Retention: Evergreen

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Drainage: Fast

Common Uses

Border Plant, Drought Tolerant, Low Maintenance, Rock Garden

Natural Habitat

Native to montane and subalpine regions in moist eucalypt forests, heathlands, and along watercourses at higher altitudes in eastern Australia

Other Names

Common Names: Erect Micrantheum

Scientific Names: Micrantheum hexandrum, Caletia hexandra, Caletia micrantheoides, Micranthea hexandra, Phyllanthus boroniacus, Phyllanthus boroniacus

GBIF Accepted Name: Micrantheum hexandrum