Alnus glutinosa (Black Alder)

How to grow Alnus glutinosa (Black Alder) in NZ

Alnus glutinosa (Black Alder) thrives in full sun and moist soil, making it ideal for New Zealand sites with higher water levels. It tolerates clay, compacted soil, and periods of wetness that many other trees cannot handle. Plant in an open area where it has room to develop a broad crown. Water during the first summer to assist establishment. Once settled, it grows rapidly and remains highly resilient in challenging conditions.

Alnus glutinosa (Black Alder) care tips

Caring for Alnus glutinosa (Black Alder) is easy due to its adaptable nature. Water young trees during dry periods to encourage strong root development. Mulching helps maintain even soil moisture and reduces weed competition. Prune lightly in winter if shaping is needed, although most trees maintain a naturally tidy form. Fertiliser is rarely required, making this a low maintenance option for busy gardeners.

Alnus glutinosa (Black Alder) size, spacing, and growth rate

Alnus glutinosa (Black Alder) can reach fifteen to twenty metres tall with a rounded to oval crown that spreads widely as it matures. Space trees eight to ten metres apart when planting for shelter or large scale landscaping. Its growth rate is fast, especially in moist or fertile soils, allowing it to fill space quickly. The strong central leader and steady growth habit give the tree a consistent and attractive structure.

Landscaping uses for Alnus glutinosa (Black Alder)

Alnus glutinosa (Black Alder) is widely used for shelterbelts, riparian planting, and wet area stabilisation. It performs well beside ponds, streams, and low lying areas where moisture levels are naturally high. In larger gardens it works as a bold specimen tree that offers shade and seasonal structure. Its resilience and fast growth make it an excellent choice for restoration projects, lifestyle blocks, and large properties.

Why buy Alnus glutinosa (Black Alder) from The Plant Company?

Alnus glutinosa (Black Alder) from The Plant Company is grown to deliver strong performance and long term reliability. As New Zealands most trusted plant nursery, we supply premium quality trees selected for health, vigour, and resilience. Our plants are professionally grown and carefully handled to ensure successful establishment. Customers benefit from expert advice and dependable service. Choosing Alnus glutinosa (Black Alder) from The Plant Company ensures excellent results for your landscape.