Mars walnut trees

Mars walnut trees for sale

Mars characteristics

British-grown trees

Unlike many garden centres and online retailers, the vast majority of our fruit trees are grown in the UK. Find out more.

In addition, all our trees are certified under the Plant Healthy scheme, supervised by the Plant Health Alliance. Other stakeholders include Defra and the RHS. The scheme aims to improve UK biosecurity by setting standards for all growers and retailers involved in selling plants in the UK. Find out more

Guaranteed fruit trees

When you buy your fruit tree from Orange Pippin Fruit Trees we guarantee it for the first season in your garden whilst it gets established. If it doesn't grow successfully, we'll either replace it the following season or offer a refund - subject to some conditions. Find out more.

More about walnut trees

The combination of healthy unsaturated fats, high levels of antioxidants, and rich vitamin content has increased interest in growing nuts in the garden or home orchard. Somewhat surprisingly the humble Walnut is turning out to be perhaps the healthiest of all nuts, thanks to its super-abundance of antioxidants.

Walnuts are essentially large spreading trees, and over the course of several decades will slowly grow to a height of between 6m-12m (20ft - 40ft) depending on the variety. The ultimate size is quite variable, dependent on the local soil quality and climate. Walnut trees take a while to establish and some dieback is quite likely in the first year after planting.

Walnuts grown in the cool climate of the UK are generally not suitable for drying, and should be harvested green in late July for eating fresh or preserving.

All our walnuts are of the fruiting species, Juglans regia, but most are grafted on to rootstocks of a related species (Juglans nigra, the Eastern Black Walnut*) which encourages earlier fruiting. Even so they grow at a leisurely pace and regular nut production is unlikely to start before 4-8 years. However like most slow-growing trees, Walnuts are very long-lived. Growing Walnut trees is therefore a long-term undertaking, but a worthwhile one.

Some Walnut varieties are self-fertile, with both male catkins and female flowers occurring on the same tree. In this respect Walnuts are similar to Hazelnuts rather than Almonds (which are more closely related to plums). The potential for self-fertility arises when the timing of both the flowers and catkins co-incides. Self-sterile Walnut varieties are those where the flowers and catkins do not overlap. Again, as with Hazelnuts, it is often a good idea to plant two Walnuts of different but compatible varieties if you have the space. Walnuts have an advantage over other nuts in that the pollination process occurs in late spring so is less affected by the poor early spring weather which often occurs in the UK.

Walnuts are relatively untroubled by diseases, but pruning is best avoided.

*Juglans nigra grows a bit more quickly than the fruiting species Juglans regia and can reach up to 20m-30m (60ft-100ft) over time - although in the UK they are likely to reach only the lower end of this scale. The nuts are of inferior quality to Juglans regia, but these and other walnut species are grown for the excellent quality of their timber.