Mirewood – Swamp & Marsh Generator for Blender

Mirewood builds complete swamps and marshes inside Blender in one click: dark still water with duckweed and floating debris, muddy peat banks, beds of cattails and reeds, lily pads in flower, bald cypress trees on buttressed trunks with their knees, live oaks hung with Spanish moss, mangroves on arching prop roots, fallen logs and a wooden boardwalk winding through it all. Pick one of 45 designs in six wetland types, change anything, and the whole scene rebuilds in a fraction of a second.

Every plant is a real plant: trees, reeds, rushes and lilies are grown from scanned leaves and bark, and the water, mud, moss, peat and planks use photo-scanned PBR textures. Thousands of plants stay light because they are instanced from one shared library, so even a 60 m bayou stays fast in the viewport. Plants follow the water: reeds stand in the shallows, sedges line the banks, lilies float on deeper water and cypress knees ring their trees.

Wetland types

• Bayou: slow black channels through cypress and moss-draped live oak
• Cypress swamp: flooded cypress and tupelo forest, cypress domes, ghost swamps
• Freshwater marsh: cattails, reeds, bulrush, sawgrass, pickerelweed and lily ponds
• Peat bog: sphagnum, dark pools, cotton grass, stunted pine and birch, plank trails
• Salt marsh: cordgrass, tidal creeks, low-tide mudflats and drowned ghost forests
• Mangrove swamp: red mangrove prop roots and black mangrove pencil roots

Features

• 45 designs in 6 wetland types, picked from pictures
• 6 water looks: blackwater, tannin, algae green, muddy, brackish, peat
• Duckweed carpet, algae scum, floating twigs and leaves, low mist
• 7 marsh plant beds, 4 lily kinds with white, pink or yellow flowers
• 10 tree kinds with Spanish moss, cypress knees, prop and pencil roots
• Fallen logs, root plates, stumps and dead snags
• 4 boardwalk styles with viewing platforms
• Water level, land amount, channel, relief and density sliders
• Randomize and New Seed for endless new wetlands
• Each swamp is independent: editing one never changes another or its copies
• Make Plants Real turns the instances into objects for export
• Works in Cycles and EEVEE

Requires Blender 4.2 or newer. Tested on Blender 4.2, 4.5 and 5.2 LTS.