Your search for "moss prep" revealed the following:

Carpet of moss - dark green : Miniatures Nature Materials Non-scale 747-23

Peeled type (weed, moss green) Height 6mm : Martin Uhlberg Non-scale WB-SWM

Natural material [Ryken] Natural (uncoloured) : Woodland material Non-scale L166

Natural material [Ryken] Light green : Woodland material Non-scale L162

Miniature moose for gardening diorama : Icom Pre-Painted Non-Scale GM13

Natural material [Ryken] Dark green : Woodland material Non-scale L164

3 Moose : Preiser - Finished product HO(1:87) 20393

Natural Material [Ryken] Autumn Mix : Woodland Material Non-scale L165

Moe's Fishing Tackle Shop (with LED) : Woodland Pre-Painted HO (1:87) 5047

Natural Material [Ryken] Autumn Mix : Woodland Material Non-scale L165

Powdery Substrate Country Glass (3) Light Green : Moline Materials Non-scale CS-03

Natural material [Ryken] Spring green (yellowish green) : Woodland material Non-scale L161

"Model" Floor tiles,Long. Grey. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19607

"Model" Floor tiles, square. Beige. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19601

"Model" Wall tiles. Grey. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19618

"Model" Panelling. Red-brown. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19594

"Model" Wall tiles. Red. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19620

"Model" Floor tiles,Long. Terracotta. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19606

"Model" Floor tiles,Long. Sand. Preiser Interior Kit : Preiser Pre-Colored Kit HO(1:87) 19608

People Planting Rice (Straw Hat) : Preiser - Finished product HO(1:87) 10572