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kowhai tree size

Curious about kowhai tree size for your New Zealand garden? You’re not alone. The iconic kowhai is loved for its golden-yellow spring blooms and its appeal to native birds, but getting the right fit for your green space starts with understanding just how big these stunning trees can grow. The mature height and spread can vary quite a bit, depending on the species, growing conditions, and care. Below you’ll find everything you need to know about kowhai tree size, plus advice on which species could be best for your garden needs.

Sophora microphylla specimen tree covered in yellow flowers.

Sophora microphylla (Small Leaved Kōwhai)

Sophora microphylla, commonly known as Weeping Kowhai, is a treasured New Zealand native tree admired for its graceful, drooping branches and masses of golden yellow flowers in spring. This semi-evergreen species is highly attractive to native birds such as tui and bellbirds, which feed on its nectar.

Buy Sophora microphylla (Small Leaved Kōwhai)

From $28.91

Suited to regions: All regions

Plant type: Trees

Height: 10.00 m

Spread: 6.00 m

Flowering time: Spring

Tolerances: Hardy, Wet, Wind

Garden uses: Parks, Ponds, Screening, Specimen

Garden styles: Alpine, Backyard, Frontyard, Japanese, Native

Sophora tetraptera (Large-leaved Kowhai) yellow flowers.

Sophora tetraptera (Large Leaved Kōwhai)

Sophora tetraptera, commonly known as the Large Leaved Kowhai, is a striking New Zealand native tree admired for its bold foliage and spectacular yellow flowers. Flowering in spring, it produces nectar rich blooms that attract tui, bellbirds, and other native wildlife.

Buy Sophora tetraptera (Large Leaved Kōwhai)

From $24.15

Suited to regions: Subtropical, Temperate

Plant type: Trees

Height: 10.00 m

Spread: 3.00 m

Flowering time: Spring

Tolerances: Coastal, Hardy

Garden uses: Living areas, Parks, Ponds, Screening, Specimen

Garden styles: Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Modern, Native

How Big Does a Kowhai Tree Grow?

Kowhai tree size depends on the variety in question. Most commonly, mature kowhai trees range from small to medium height in domestic gardens, but in the wild, some species can become surprisingly large. On average, you can expect a well-established kowhai to reach between 5 and 12 metres tall, with a spread of 3 to 6 metres depending on the species. Take note that kowhai trees grow slowly at first, but once established, they can quickly rise to fill their space.

Kowhai Tree Size by Species

Not all kowhai are created equal. Here’s a breakdown of kowhai tree size according to some of the most popular species found in New Zealand gardens:

Sophora tetraptera (Large Leaved Kōwhai)

Known for its lush, large leaves and impressive stature, Sophora tetraptera (Large Leaved Kōwhai) is one of the largest kōwhai species in New Zealand. Mature specimens can reach up to 12 metres tall and develop a rounded crown up to 6 metres wide, making it a stunning feature tree for bigger gardens or lifestyle blocks.

Sophora microphylla (Small Leaved Kōwhai)

A favourite due to its classic look and manageable size, Sophora microphylla (Small Leaved Kōwhai) typically grows to around 8 metres tall, with a spread of about 4 to 5 metres. Its slightly smaller form makes it suitable for urban gardens seeking a native touch without overwhelming the space.

Sophora longicarinata (Limestone Kowhai)

Renowned for its delicately weeping habit, Sophora longicarinata (Limestone Kowhai) is one of the more compact kōwhai options. It typically matures at 4 to 6 metres high, perfect for smaller gardens or as a distinctive understorey planting.

Sophora godleyi (Godleys Kowhai)

With elegant foliage and a graceful shape, Sophora godleyi (Godleys Kowhai) regularly reaches around 8 to 10 metres tall and about 5 metres wide, striking a happy medium for most larger suburban gardens or shelter belts.

Sophora chathamica

Often found growing naturally near the coast, Sophora chathamica can reach up to 10 metres tall. Its spreading canopy is a favourite for providing dappled shade and its size makes it a perfect candidate for feature planting or wildlife corridors.

Choosing the Right Kowhai for Your Garden Size

When selecting a kowhai tree, always consider both the mature size and the growing space available. Smaller gardens benefit from graceful species like Sophora longicarinata (Limestone Kowhai), while those with more room might opt for Sophora tetraptera (Large Leaved Kōwhai) or Sophora chathamica to create a stunning, wildlife-friendly focal point.

Final Thoughts

Understanding kowhai tree size will help you make an informed decision for your New Zealand garden. Whether you’re dreaming of towering branches filled with tuis or a compact specimen tucked into a courtyard, there’s a kōwhai to suit your space. Explore our range of kōwhai species to find the perfect tree for your landscape.

Contact us

Whether you need assistance finding the plant you’re looking for or you simply want to know more about who we are and what we do, we invite you to get in touch with us today. A member of The Plant Company team will get back in touch as soon as possible.

kowhai tree size

Sophora microphylla (Small Leaved Kōwhai)

Sophora tetraptera (Large Leaved Kōwhai)

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How Big Does a Kowhai Tree Grow?