early spring
early spring and late summer
Nothing.....a Tamarack is the Native Indian name for a Larch tree.
mid spring or after you pick the cherries
early spring and early autum
Tamarack trees live in swampy areas
Tamarack, also known as larch. http://en.wikipedia.org/wiki/Tamarack_Larch
No, it's a bad idea to prune a pin oak in spring, as you may be increasing the chances of its infestation by the fungus oak wilt. Better to prune it when dormant. By the time oak wilt is diagnosed, it is too late to save the tree.
I am not sure when the tree sets its buds, but you would trim the tree after the tree has bloomed in the spring to avoid cutting off the buds for the flowers.
The larch is a deciduous conifer. In other words it is a conifer that drops it's needles in the Autumn.
Your English is incorrect, should read, "How do you prune an olive tree?"
It would be early in Spring, before the tree buds out, April or May. Any time the tree is dormant, the leaves are off, you can trim it easily with little harm to the tree. If you must do it in summer, wait until after the tree has flowered.