Depends on the type, but often when the fork and branches are tall enough. Saplings sitting near sides of roads are often seen with two on each side, but the reason being is probably because they are near cars and pedestrians, and any can pull leaves off or ram into them. A strong possibility is the weather. If planted on the wrong season or weather, a stake is often recommended.
Soak newly planted trees about once every 10 days unless your area receives an inch or more of rain, then that will suffice. too much watering will result in browning of leaves and eventually dropping leaves. The amount of water that a newly planted tree or shrub requires can vary. Unfortunately, nobody can tell you exactly how much or how often you should irrigate without visiting the site to check the soil hydrology.
No. Dragonflies are purely carnivorous, they eat smaller insects.
Trees are called a renewable resource because harvested trees can be replaced with newly planted trees, replenishing cleared woodland areas with new growth.
because of its tolerance to pollution
The Man Who Planted Trees was created in 1953.
thousands and thousands of trees are planted
The trees are planted along the sea shores because
a stake/tree
55 trees have been planted yet for the common wealth games.
Trees prevent soil loss so the road stays stable because of the trees planted on both sides.
I believe street trees are planted after old tree are cut down because, the old trees have outgrown their spot or are likely to collapse or uproot a street , sidewalk ,or structure so, the old trees are cut down and new trees are planted for beautification purposes.
from when they were planted to now.