Differentiate the Giant Tree Taiga and Giant Spruce Taiga

Little people may know that there are two types of Mega Taiga: The Giant Tree Taiga and the Giant Spruce Taiga.

Mega Tree Taigas are comparable to Redwood forests; they have large trunks with a small amount of leaves up top.

Giant Spruce Taigas are similar but they have much more leaves.

So since these biomes are so similar, why not distinguish them more? Keep the Giant Tree Taiga the same, but perhaps add Moss, Lichens, Berry Bushes, and make it rain much more in the Giant Spruce Taiga to make it similar to the temperate rainforests in the Pacific Northwest? the Giant Spruce trees already look like Douglas Firs from the region.