Koa (Acacia koa) - PictureThis

Koa

Koa (Acacia koa) is a large flowering tree that is part of the legume family. It is endemic to Hawaii. The trunk of the tree has traditionally been used by indigenous peoples to build vessels similar to dugout canoes and surfboards. In the Hawaiian language, the word "koa" means "brave" or "bold."

Scientific classification

Species

Koa (Acacia koa)

Legumes, milkworts and allies

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Perennial

Lifespan

Tree

Plant Type

Spring, Summer, Winter

Bloom Time

15 m to 24 m

Plant Height

12 m

Spread

Green, Gray, Silver

Leaf Color

8 mm to 1 cm

Flower Size

Yellow

Flower Color

Green, Gray, Silver, Pink

Stem Color

Evergreen

Leaf type

Images of Koa

Attributes of Koa

Growth Rate

With a moderate growth rate, koa actively develops throughout the year, demonstrating a consistent yet pleasing progression of height and foliage. This pace enables balanced growth patterns, ensuring each plant body part adequately develops, reducing the potential for leggy or disproportionate plants. Notably, the year-round growth also includes the production of its distinctive sickle-shaped leaves and bright yellow flowers, contributing to its horticultural appeal. The growth rate may vary slightly with seasonal changes, but typically remains moderate.

Care Guide for Koa

Every 2-3 weeks

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Water: Koa is native to Hawaii, thriving with periodic rainfall and tolerating dry spells through internal moisture reserves. Watering every 2-3 weeks mimics its natural habitat. The plant flourishes in volcanic soil, benefiting from excellent drainage that aids its water management.

Fertilize: For optimal health, koa thrives on high nitrogen fertilizers, applied quarterly in recommended dosages. Reduce during dormancy. Seedlings require more frequent feeding than mature plants. Apply granules to moist soil and water well, ensuring effective nourishment for koa's vigor and longevity.

Pruning: Koa features a tall, elegant form and attractive wood. Prune from early to late winter while dormant, focusing on dead wood, thinning branches, and shaping for airflow. Regular pruning fosters healthy growth and blooms. Use sharp, clean tools to prevent disease and ensure quick recovery.

Propagation: Koa is a prized tropical hardwood known for its attractive grain and durability, ideal for furniture and crafts. Propagation is mainly via seed sowing, requiring well-drained, fertile soil and moisture control. Treat seeds to break dormancy and protect young saplings from pests and diseases.

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