Dig the planting hole twice as wide and to the same depth as the root-ball. Remove the shrub from the container, gently tease the roots and cut away any circled or tangled roots.
Position in hole and backfill, gently firming down. Form a raised or doughnut shaped ring of soil around the outer edge of the plant's root zone. This helps keep water where it's needed. Always water in well after planting to settle the soil around the roots and keep the soil moist for several weeks while the new plant establishes.
Mulch around the base with organic mulch like bark chips, sugarcane or pea straw, keeping it away from the trunk.
Water deeply, once or twice a week, depending on weather conditions.
Two varieties are desirable for effective cross-pollination.
Walnuts grow into very large trees that are ideal for country estates in cool, reasonably moist climates. Their ultimate size makes them too large for most suburban gardens.
Most familiar variety is the English or Persian walnut.
While modern varieties of walnut bear fruit within their first few years, it takes 4–6 years to produce a harvestable quantity and 10–12 years for the tree to reach full production.
Pruning is required every 3–4years, depending on growth rates of the tree.
You can help the plants to make the most of any available water by mulching heavily over the root area with a 10cm thick layer of organic mulch and by applying Yates Waterwise Soil Wetter Concentrate every six months. Soil wetters encourage water to better penetrate the root zone.