Clump Foliage : Summer - Summer Clump Foliage is a mix of light, medium, and dark green clump foliage. Clump foliage is the same material used in flock, but in much larger pieces (“clumps” is the technical term). These larger clumps can be used to realistically represent bushes and small trees. Clump Foliage can also be torn into even smaller pieces, to represent very small plants. - GF9 Gale Force Nine