Trees can be found on almost any area. Depending whether trees are scarce or dense, they can be a great renewable source of wood. The density of growth is determined by the biome, and those are visible on the pre-embark screen. Density does not change - there are no climate shifts during game play.
There are many different varieties that grow in various different types of biomes. Tower-caps are trees (giant mushrooms, actually) that grow only underground, and are the only ones that do, and then only under special circumstances. All trees are effectively identical, equal in usefulness and value.*
- (* Note that preferences can alter a dwarf's perception of the value of items made from a type of wood that they prefer.)
Different types of trees have their own symbol, such as
⌠. Some share the same symbol, but since the only difference is for preferences, this is not a significant problem. (See table, below, for tree/symbol pairs.) For most purposes, a tree is a tree.
Deciduous trees will change colour to red or yellow in autumn (
♠ ), and lose their leaves in winter (
╞ ). This does not affect their usefulness - they may be cut down in any season, and produce the same end result.
Trees are currently not a source of food or other material, so it is not possible to harvest maple syrup, nuts, etc.
 Harvesting / Removing the barrier
They must be designated for removal from the chop esignations menu rees, which will instruct dwarves with the wood cutting labor enabled to grab an axe and begin chopping down the tree. Once cut down, they become one wood log, which is movable and can be hauled by enabling the wood hauling labor on any dwarf and designating a wood stockpile.
Trees will not be destroyed by magma or fire (nor will water damage them in any way). Saplings can 'drown' in water and magma, though.Verify Ballista arrows can destroy trees, but catapult stones will not.Verify
 Tree growth
Trees grow from saplings, which start growing randomly on tiles of a suitable biome. Saplings can be killed by heavy traffic, and also flooding. Dead saplings will remain for some seasons, and then disappear - or heavy traffic will trample them away. To grow from a sapling to a tree takes about a year and a half or more, though this seems randomized to some degree. Trees do not need to be (and can't be) "planted" - even if a map is stripped of all trees, new saplings will regrow, randomly and in their own time.
Saplings will not grow on a tile with items on it (such as stone, food, etc). Saplings will not grow where a road has been laid down.
 Elven Diplomats
Elven diplomats eventually come to talk about the "tree situation" in your fort. Sometimes the diplomat will arrive and merely complain but most often the diplomat will want to set a limit to the number of trees
butchered harvested to feed fuel your earth blighting death machines industry. This quota is based on all the logs you have in your stocks, no matter what the source.Verify It doesn't matter if your wood comes from the forest outside or from tower-caps along the cave river - if you have any wood in your stocks, the treehuggers elves will complain.
 List of Trees
|Tree Name||Tile||Biome / Habitat||Alignment||Deciduous||Density (g/cm3)||"Likes them for their..."|
||Tropical Dry Broadleaf Forest
||Temperate Conifer Forest
Tropical Conifer Forest
||Tropical Moist Broadleaf Forest||All (Dry)||No||buttresses|
||Any Tropical Forest||All (Dry)||No||loose inflorescences|
||Mangrove Swamp||All (Wet)||No||roots|
||Temperate Broadleaf Forest
|All (Dry)||Yes||autumn coloration|
||Any Temperate Broadleaf||All (Dry)||Yes||acorns|
Temperate Conifer Forest
Tropical Conifer Forest
||Any Desert||All (Dry)||No||amazing arms|
||*Subterranean SPECIAL*||All||No||great size|
Any Tropical Forest
Tropical Freshwater Swamp
Tropical Saltwater Swamp
Tropical Freshwater Marsh
Tropical Saltwater Marsh
|All (Wet)||No||sad appearance|
 Trees by Biome
Trees in italic are found only near rivers and swamps:
- Temperate swamps and marshes - Oak, Willow
- Tropical swamps and marshes - Willow
- Mangrove swamps - Mangrove
- Taiga - Pine
- Temperate coniferous forest - Cedar, Pine, Willow
- Temperate broadleaf forest - Maple, Oak, Willow
- Tropical coniferous forest - Cedar, Mahogany, Pine, Willow
- Tropical dry broadleaf forest - Acacia, Mahogany, Willow
- Tropical moist broadleaf forest - Kapok, Mahogany, Willow
- Temperate plains - Maple, Oak, Willow
- Tropical plains - Acacia, Willow
- Deserts - Saguaro
For the greatest variety of trees, embark in a tropical coniferous forest if possible.
|Crops and Herbs • Trees|
|Outdoor||Muck root • Bloated tuber • Kobold bulb • Prickle berry • Wild strawberry • Longland grass • Valley herb • Rat weed • Fisher berry • Rope reed • Blade weed • Hide root|
|Underground||Plump helmet • Pig tail • Cave wheat • Sweet pod • Quarry bush • Dimple cup|
|Outdoor||Acacia • Cedar • Kapok • Mahogany • Mangrove • Maple • Oak • Pine • Saguaro • Willow|