Giant Montbretia

(Crocosmia masoniorum)

Giant Montbretia (Crocosmia masoniorum)

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Estimated Native Range
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Summary

Crocosmia masoniorum, commonly known as Giant Montbretia, is a deciduous perennial bulb native to grasslands and open areas in Eastern South Africa, particularly in the KwaZulu-Natal province. It typically grows to a height and width of 2 feet (0.6 meters), forming clumps of upright, sword-shaped leaves. The plant is renowned for its vibrant, funnel-shaped flowers that bloom in succession from the bottom up, appearing in shades of yellow, orange, and red during the summer and fall months. These flowers are particularly showy and attract pollinators such as hummingbirds and butterflies.

Giant Montbretia is valued for its striking floral display and is often used in borders, beds, and as cut flowers due to the long vase life of its blooms. It thrives in full sun to partial shade and prefers well-drained soil. While it requires medium amounts of water, it is relatively drought-tolerant once established. Crocosmia masoniorum is also appreciated for its ease of maintenance and its ability to naturalize in favorable conditions. However, it can be susceptible to spider mites and thrips, especially when grown in hot, dry climates. The plant has received the Royal Horticultural Society’s Award of Garden Merit, indicating its exceptional qualities for garden use.CC BY-SA 4.0

Plant Description

  • Plant Type: Bulb
  • Height: 4-5 feet
  • Width: 1-1.5 feet
  • Growth Rate: Moderate
  • Flower Color: Orange, Red
  • Flowering Season: Summer, Fall
  • Leaf Retention: Evergreen

Growth Requirements

  • Sun: Full Sun
  • Water: Medium
  • Drainage: Medium, Fast

Common Uses

Bank Stabilization, Bird Garden, Deer Resistant, Hummingbird Garden, Low Maintenance, Rabbit Resistant, Salt Tolerant, Showy Flowers

Natural Habitat

Grasslands and open areas in Eastern South Africa

Other Names

Common Names: Swan Crocosmia

Scientific Names: , Crocosmia masoniorum, Tritonia masoniorum,

GBIF Accepted Name: Crocosmia masoniorum (L.Bolus) N.E.Br.