If your site is not oddly arid for the region I bet metasequoia would be the fastest and one of the most unique. The local botanical garden has a few lined up near some bald cypress and I love the effect. I have seen a couple 100 footers planted circa 1950. Think I recall reading the tallest we have is 140 foot or so and the late forties is the oldest it could be.

Go with a mix of different species of whatever you choose. That way if there is a bad year for heat or drought or some bug comes along it does not destroy your grove entirely.

Here is a link that might be useful: {{gwi:627557}}

What are the dimensions of your (planting ) space ?

define the space dimensions ...

and define what you mean by a grove

and a pic sure wouldnt hurt ...

ken

Without some dimensions and possible a picture, it's hard to give any pertinent advice. For instance, here's a 'small grove' in my garden. These trees are a little less than six feet tall. I'm sure you didn't mean this small, nor as large as Dawn Redwoods.
Mike
{{gwi:695147}}

I thought i had replied earlier, maybe i didn't send it. Anyway, i like the idea of planting more than one species and also i would point out that for conifers, fast growing usually means the tree will eventually be quite large.

Three species to think about white pine Pinus strobus, red spruce picea Rubens, blue spruce picea pungens.

mike.. your weird pic.. looks like a painting... got a new hobby??/

ken

I used to paint a bit, but gave it up years ago. Plants grow faster than I can paint. I never learned the game of chess until I learned to play it fast. Never could paint fast. Too self critical.

I like to prune trees and shrubs. In this case I pruned them to look like they belong in a smaller scale than if they were allowed to grow to full size. Sort of like Giant Bonsai. Just enhance what the tree would look like if it was growing in an old growth grove, on a sub-alpine windswept, rocky ridge up in the mountains.
Here's another example of a Cryptomeria japonica, 'Jin Dai' pruned that way. It doesn't block a bad view though, as the OP requested.
Mike
{{gwi:695148}}

Here's a picture of part of the garden that looks like a painting....or a puzzle.
(I should start a new thread)
Mike

{{gwi:695149}}

Mike, your gardens are simply enchanting! You should start a new thread and keep posting! How tall is that 'bonsai' tree? Sorry Sue, for hijacking your thread, but I had to comment on Mike's photos.

Sue, you need to provide the size of the area you want your plants in for appropriate tree recommendations.

That's a cool effect, Botann. Would work wonders on a model-train layout.