kowhai tree height

Kowhai Tree Height by Species

Kowhai trees can reach a range of heights depending on the species, growing conditions, and age. Generally, mature kowhai tree height ranges from 4 to 12 metres, although some may exceed this in ideal conditions. Here’s a brief overview of the main Sophora species found in New Zealand nurseries, including their typical heights:

Sophora tetraptera (Large Leaved Kōwhai)

Often selected for its bold leaves and vigorous growth, Sophora tetraptera (Large Leaved Kōwhai) can reach heights of 8–12 metres at full maturity. This makes it a striking choice for larger gardens or as a shade tree, especially in areas where space allows. With its robust structure and lush foliage, this species offers an impressive presence and plenty of nectar during flowering season.

Sophora microphylla (Small Leaved Kōwhai)

If you’re after a more compact tree, Sophora microphylla (Small Leaved Kōwhai) generally grows 6–10 metres tall, though it may remain smaller in exposed or dry locations. Its fine, delicate leaves and lovely yellow blooms draw tuis and other native birds, adding wildlife interest to gardens of varying sizes.

Sophora godleyi (Godleys Kowhai)

Known for its upright, columnar habit, Sophora godleyi (Godleys Kowhai) reaches heights of 6–10 metres. It’s favoured for its reliable flowering and tidy shape, making it a great choice for shelter belts or as an avenue tree where height matters but spreading width is less desirable.

Sophora longicarinata (Limestone Kowhai)

For rocky or calcareous soils, Sophora longicarinata (Limestone Kowhai) offers an appealing solution. This species grows 4–6 metres tall, often maintaining a more compact form even when mature. It’s ideal for smaller gardens, urban spaces, and those wanting a manageable yet distinctive native tree.

Sophora chathamica

A coastal treasure, Sophora chathamica commonly reaches up to 10 metres in ideal conditions. Its lush foliage and resilience in salt-laden winds make it a popular choice for gardens near the sea or exposed sites, all while delivering that iconic kowhai colour.

Choosing the Right Kowhai for Your Garden

When considering kowhai tree height, factor in your available space, desired growing conditions, and landscape goals. For tall specimens, Large Leaved Kōwhai or Chatham Island kowhai offer showy height and shade, while Limestone Kowhai suits tighter spots. Each species brings a unique combination of beauty, wildlife attraction, and adaptability.

Thinking of planting a kowhai? Visit our guides on Sophora tetraptera (Large Leaved Kōwhai), Sophora microphylla (Small Leaved Kōwhai), and other unique kowhai species to find the perfect fit for your site. Let your garden soar with New Zealand’s golden native!