Nice pictures of evergreen shrubs. Alberta spruce, Boxwood, some dwarf juniper, only the spruce get over six feet tall, and it takes more than 30 years to do that. They do not remove much carbon from the atmosphere in the summer when they are growing.
Well, my crabapple tree (which grows quite rapidly in the summer) doesn't remove any greenhouse gases in the winter, because it loses its leaves. The boxwood, juniper (totally buried under the snow), and dwarf spruces keep their leaves, so they must be photosynthesizing with something.