Vastu Shastra is an ancient science of architecture. With distinct reasons, Vastu shastra recommends that there should be trees around the building. However the proper placement of trees also are needed.
Vastu Shastra recommends some simple tips:-
Big trees should be avoided in the space surrounding the building and inside the boundary wall. The reason for this action can be explained as the roots of big trees can damage the base of the wall compound and the building. The roots of big trees absorb the invisible power of the sunlight quickly. And because of this reason the good effect of these powerful rays is not obtained by the building.
If there are trees around the building, they should not be tall or thick leaves and not in the east or the north direction. The auspicious sunrays can be blocked by these thick leaves. There is no objection to such trees in the west and the south direction. However, such big trees should not be only in the west or in the south direction but also in the both direction. The heavy weight of the trees spoil the balance of the building as well.
Useful trees of 3 to 5 feet height can be in the east and the north directions. There should be no tree of any kind such as big, small, useful or otherwise in the north-east corner. This can prove as harmful to keep trees in such corners.
No thorny plants or cactus should be in the four walls of the plot even for decorative purposes. Because, except Rose, some medicinal plants like shatavari, and many other such plants are throwing negative rays out. Because of this, unnecessary tension is created in the house. Cactus or thorny plants are endowed with demonic and evil properties. If there is necessity to plant cactus plants, in that case for every cactus plant two basil plants should be there. The basil plants reduce the evil effect of the cactus plants. But if possible, all the thorny plants should be uprooted and thrown away without any thought. No plant should be brought from a temple, bank of a river. The plant should never be stolen from any place or given by a person whom you dislike, should be planted in your plot. Saplings brought from a nursery should be planted. These things are very important one to keep in mind when to plant a big tree or a small one.
No creepers, however beautiful, with flowers should be raised on the compound wall of the building in the east or the north direction. Creepers can be planted only in the garden. There is no harm to have a money plant in the house. However, it should not be planted outside the house with the support of a tree etc. money plant can grow only around a temple, while placing Banyan tree in the east. Audumbar which is a type of banyan tree is placed on the south side, whereas Pipal can be planted in the west. But these trees should not be planted around our residence or the place of business.
Any big or small, proper or improper, tree should not be planted in front of the main entrance of the building in any direction. This can create many obstacles in the owner's life.
Banana, Papaya, Mango, Pineapple, Lemon, Nilgiri, Ashoka ox Jamun trees etc. should not be planted in the east or the north direction of the building. Paucity of funds and children is experienced. There is no harm in having Ashoka, Almond, Pinapple, Nilgiri, Coconut, Neem, Lemon trees etc. in the South or in the West direction.
No big tree should be there in close proximity of the compound wall. In the middle square of the old building, no big tree is good. Because there is a load in the place of Bramha and we are not capable to follow the rules for the fast like the old people. Therefore there should be no tree at the Bramhasthan. There is no harm if there are trees in the west and the south direction, and also outside the compound wall of our building. Minimum shade of trees should fall on the building between 9 a.m. and 3 p.m.
Plantation of saplings and building of garden etc. is profitable during the auspicious constellations such as Anuradha, Vishakha, Revati, Chitra, Pushya, Mriga etc.
Rose, Shrubs, Champak, Parijat, Mogra and Merigold should be planted leaving the south-east, the south-west, the north-east corner in the west in the northwest or the east. There should be no trees in the north direction as far as possible.
Any inauspicious tree should be axed in the Bhadrapada or Magh Month. Otherwise before axing any tree proper worship of the tree should be performed one day before it is necessary. The sacred offering should be of rice and curd and seven sacred rounds with water should be completed with folded hands. The prayer should be made to the tree. And prayer is like as "Due to unavoidable circumstances, I am forced to remove you from this place. Forgive me. At proper place and time I shall plant a sapling, and pour the water held in hands." Within three months a sapling of the same kind of tree should be planted in the open space, some where with proper covering of stones and bricks etc. Watering should be done for at least three days.
Inspite of having open space around the building, saplings should be planted only in the earthen pots.
Trees like Berries, Tamarind, Gum Arabic, Bel, Bramharakshas etc. should never be planted in the open space surrounding the building. The shade of these trees should not fall on the building and the people should never be rest in the shade of these trees.
Except Neem and some other trees, most of the trees emit carbon dioxide at night. Carbon dioxide is harmful to the human being therefore, it is advised not to sleep under a tree at night.
Plants emitting white liquid like milk should not be planted around the building. They can, however, be planted on the boundary line of a field. Cacti, Carded Cotton are examples of such plants.