Can I cut my evergreen tree down to half its height and still get new green growth?

if you trim your conifer down to half its height and it “won’t have much green left,” you are almost certainly risking killing it or leaving it permanently bare and unattractive

Trees are able to beaten up a bit, but trimming it down half if size would cause too much stress to the tree. If you were to cut off a few branches over a longer span of time then you can promote the tree to continue to grow in unaffected areas as the nutrients will spread elsewhere from the cut off branches. Repeating this process till you ultimately get the desired aesthetic of said tree.

Cutting this this type of tree in half (topping it). Is very harmful to tree. They only produce new growth from existing green shoots. When you top it the top section dies. And new shoots that appear on bottom are weak and will decay.

If you cut it down halfway, it will not grow back as well. It causes it stress when you do that. . The tree won't be able to photosynthesize properly without enough green needles, and you risk killing the tree or creating a multi-headed, unsightly one with multiple new leaders forming from the cut. It is best to avoid such drastic cuts or remove the tree entirely and plant a new one, as the tree likely won't bounce back to a healthy, natural shape