There are also esthetical consideration when choosing to plant a tree. If the tree you want to plant have the foliage so it provides pleasantly diffused light you may want to plant it against the sun or if your tree is that kind that have beautiful autumn coloring or richly toned fruits then is better to plant it so that the light falls on it.
Plant a deciduous tree at little distance from the house in front of a south facing window, because when the sun is high it will shine sufficient light through the window and when the sun is low, during the winter, light will play through the branches.
If you have western or eastern facing windows is better to plant a tree fairly close to the house so that the early morning and evening sun will shine through the branches. After considering all aspects: practical and esthetical ones is time to plant your trees.
Dig the planting hole once the site has been prepared, at about two to four times the width of the tree’s root ball, depending on if the tree is container-grown, bare-root or root-balled. Mix the removed soil with well-rotted organic matter and if planting in spring add about 110 g of slow-release fertilizer. Fork over the sides and base of the hole to break up the surrounding soil and allow the tree roots to spread into it more easily, specially if the soil is heavy or sticky.
Lay the tree on its side and slide it out of the pot if using a container-grown tree or remove the hessian netting for root-balled trees. Gently tease out the roots and remove any weeds from the compost then spread out the roots. If you use a stake, first hammer it into the hole just off-center and windward side, then hold the tree next to the stake.
Lay a cane across the hole to check the planting depth and adjust the depth if necessary by adding or removing some soil. Backfill around the tree with more of the topsoil and organic matter, firm around the tree in stages by treading, then fork over lightly and water well. Cut back damaged stems or long sideshoots and lower feathers. Mulch 5-7 cm deep around the tree.
If you choose to plant container-grown trees you should know that those can be planted out at any time of year, except during drought, very wet conditions or frost. Deciduous, bare-root trees should be planted between mid-autumn and mid-spring but avoiding the periods of frost and extreme damp. Evergreen and hardy deciduous trees with fleshy roots should be planted in mid-autumn or mid to late-spring. Half-hardy trees is better to be planted in mid-spring. Root-balled trees are best planted in early to mid-autumn or mid to late-spring, and if they are deciduous then they may be planted out in winter in mild conditions.
Autumn planting is better as it allows a tree’s roots to become established before the winter comes and help the tree to withstand any hot, dry spells the fallowing summer. In cold regions it is better to choose spring planting as it allows trees to establish more successfully in the warmer weather. If planting is done in winter, the ground may be lifted by subsequent spells of frost and, if so, the soil should be re-firmed once it has thawed.