Whau (Entelea): New Zealand’s Fast-Growing Native Wonder
If you’re looking for a plant that grows faster than your weekend to-do list, meet the whau! This distinctive New Zealand native might just be the perfect addition to your garden – if you live in the right climate zone and appreciate plants with serious personality.
What Is Whau?
Whau (Entelea arborescens) is a fast-growing native tree endemic to New Zealand. Don’t let the fancy botanical name intimidate you – this plant is as straightforward as they come. It’s a pioneer species, which means it’s one of nature’s first responders, quickly colonizing disturbed areas and getting the ecological party started.
This remarkable plant is found naturally throughout New Zealand’s North Island and parts of the South Island, particularly in coastal and lowland areas where it thrives in the mild, maritime climate.
Why You Might Want to Grow Whau
Here’s what makes whau special in the garden:
- Lightning-fast growth: This tree can grow several feet per year, making it perfect for impatient gardeners
- Distinctive appearance: Large, heart-shaped leaves create a tropical feel, while white flowers add seasonal interest
- Coastal tough: Handles salt spray and coastal winds like a champ
- Pollinator magnet: Bees and other beneficial insects love the flowers
- Erosion control: Excellent for stabilizing slopes and preventing soil erosion
The Reality Check
Before you get too excited, whau isn’t suitable for every garden or gardener:
- Climate requirements: Only hardy in USDA zones 9-11, so it’s not an option for colder climates
- Space needs: Can reach 20 feet tall and wide, so it needs room to spread
- Frost sensitivity: Young plants are particularly vulnerable to cold snaps
- Wind vulnerability: Despite being coastal-adapted, young trees need protection from strong winds
Perfect Garden Settings
Whau shines in specific garden types:
- Coastal gardens where salt tolerance is essential
- Native plant gardens, especially those featuring New Zealand species
- Informal, naturalistic landscapes
- Erosion-prone slopes that need quick stabilization
- Windbreak plantings (once established)
Growing Whau Successfully
The good news? Whau is relatively easy to grow if you can provide the right conditions:
Soil: Well-draining soil is non-negotiable. Whau hates wet feet and will sulk (or worse, rot) in waterlogged conditions. Sandy or loamy soils work best.
Light: Full sun to partial shade keeps whau happy. It can handle some shade but grows best with plenty of sunlight.
Water: Regular watering while establishing, then it becomes quite drought-tolerant once the root system develops.
Location: Choose a spot protected from strong winds, especially for young plants. A naturally sheltered location or the protection of other established plants works well.
Planting and Care Tips
Getting your whau off to a good start is crucial:
- Plant in spring after the last frost danger has passed
- Dig a hole twice as wide as the root ball but no deeper
- Add compost to improve soil structure, but don’t over-fertilize
- Stake young trees in windy locations
- Mulch around the base to retain moisture and suppress weeds
- Prune lightly to shape, but avoid heavy pruning which can weaken the tree
Is Whau Right for Your Garden?
Whau is an excellent choice if you live in a mild, coastal climate and want a fast-growing native plant that supports local wildlife. It’s particularly valuable for New Zealand gardeners looking to create authentic native landscapes or anyone dealing with erosion issues in suitable climate zones.
However, if you’re in a colder climate, you’ll need to look for alternatives. Consider fast-growing native trees suited to your specific region instead – your local native plant society can point you toward the best options for your area.
Remember, the best garden plants are those that naturally thrive in your specific conditions. Whau might not be for everyone, but in the right spot, it’s a remarkable addition that brings both beauty and ecological benefits to the landscape.
