You don't need to water your new trees and they'll grown on their own. Watering Will not make them grow faster and that just wastes more of your energy and time.
yes
apple trees only drink water but don't eat anything
they need water
apple trees grow in the cold climate and the coconut trees need water for dispersal
apple trees grow in the cold climate and the coconut trees need water for dispersal
You must find their trees. Underneath the trees are flowers. Water those to meet the Harvest Sprites. Many of the trees are in areas you can't reach right away. You will need complete the Rainbow Recipes to unlock new areas and meet all the Harvest Sprites.
Depends on the weather and the season. If its not raining and its a cool day then just once a day If its not raining and its hot then just 2 or 3 a day its its raining then no need to water it.
3 times a week
how old are they? do they get enough water? too much? fertilizer?
trees grow smaller because they are old or need water
no, as long as you water it properly
Make sure you're taking care of it... e.g water sunlight...