How Fast Does Hazelnut Grow and When Will It Fruit?

Hazelnut is generally considered a moderate to fast-growing shrub by woodland and hedgerow standards, but new growers are often surprised by the timeline to first significant harvest. Setting realistic expectations for each year of growth saves frustration and helps you plan your management correctly from the start.

Year One: Establishment

A bare-root hazelnut planted in autumn or winter will focus most of its energy in the first growing season on establishing its root system. Top growth in year one is often modest — sixty to ninety centimetres of shoot extension is typical on a healthy plant in good soil. Some plants barely seem to move above ground while putting down a substantial root network below. Do not be alarmed by apparent slow early growth; it is a good sign that root development is happening. Keep weed competition suppressed and water during dry spells.

Years Two and Three: Rapid Shoot Growth

Once established, hazelnut grows vigorously. Shoot extensions of one to one and a half metres per year are common in years two and three on a well-grown plant in a good site. The plant begins to develop its characteristic multi-stemmed form and may start producing catkins in year two or three, though they are usually sparse. Some small female flowers appear from year three, and a very light scattering of nuts in year three or four is possible though not typical.

Years Three to Five: First Meaningful Crop

Most garden hazelnuts produce their first worthwhile crop between year three and year five. The crop builds progressively — a handful of nuts in year three, more in year four, and the beginning of a genuinely useful harvest from year five onwards on a well-managed, well-pollinated plant. Plants from established nursery stock that have already developed a reasonable root system at time of purchase can sometimes fruit more quickly than this.

Mature Size

Left unpruned, a hazelnut grows to four to five metres in height and similar spread as a multi-stemmed stool. In a managed garden it is routinely kept to two to three metres by annual pruning and the removal of the oldest stems. Height and spread develop fairly quickly once establishment is complete — a planted hazelnut can reach two metres height within four to five years in a good position. The plant is long-lived; managed hazelnut stools can remain productive for decades or even centuries.

Factors That Affect Growth Rate

Soil quality, moisture availability, and competition from surrounding plants all influence hazelnut growth rate significantly. A hazelnut planted in a lawn without a weed-free circle around it will grow noticeably more slowly than one given a two-metre clear area mulched to retain moisture and suppress competition. Aspect also matters: a south-facing position with good light typically produces more vigorous growth and earlier fruiting than a north-facing or heavily shaded site.