Carpathian walnut trees are sometimes referred to as English walnut trees or Persian walnut trees. They are indigenous, nut producing trees to the Carpathian mountains and their growing regions extend as far eastward to Korea. Carpathian walnut trees can grow to approximately 40 to 60 feet in height with an equal spread. They are hardy in the USDA Zone 5 to 9. Plant Carpathian walnut trees in full sun and provide them with light, loamy soil.
Cultivate the planting area to a depth of between 16 and 18 inches. Use a hoe to weed out all weeds and their roots. Then rake the planting area smooth and level making sure to eliminate rocks or sticks in the process.
Dig a suitably sized planting hole for the Carpathian walnut tree. The planting holes should be twice the width and depth of the container the Carpathian walnut tree is growing in. If you have more then one Carpathian walnut tree to plant, each of the planting holes should be approximately 30 to 60 feet apart.
Mix into the soil you removed from the planting hole, an equal amount of peat moss, compost, aged manure or similar organic media. Then, scoop back into the planting hole the soil and organic matter mixture until it's approximately 1/3 full of soil.
Set the container on its side, on the ground. Support the Carpathian walnut tree by holding its stem at the top of the root ball. Use a sturdy block of wood and strike in a towards motion along the top of the rim to remove the Carpathian walnut tree from its growing container.
Set the Carpathian walnut tree into the previously dug planting hole. For proper growth, check to make sure the Carpathian walnut tree is sitting in the planting hole so the top of its root ball is even to the surrounding garden soil. If it isn't, remove the Carpathian walnut tree from the hole and scoop in a few shovelfuls of soil. Then, reset the Carpathian walnut tree in the planting hole.
Scoop in soil to fill the planting hole with soil, tamping the soil down firmly around the root ball of the Carpathian walnut tree as you go. Then, thoroughly water each of the Carpathian walnut trees, letting the water run slowly to reach the root system.
Prune back the Carpathian walnut tree to between 5 and 6 feet from the ground. Then, place a stake into the ground near the Carpathian walnut tree to offer it support as it grows. Use a stake that is at least 3 feet taller than the Carpathian walnut tree, and use gardeners twice to thoroughly secure the Carpathian walnut tree's trunk to the planting stake.