v0.31:Tree

Trees can be found on almost any playable map. Depending whether trees are scarce or dense, they can be a great renewable source of Template:L. The density of growth is determined by the Template:L, and those are visible on the pre-Template:L screen by hitting F1, F2 etc. 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. The only difference between different types of trees is the (usually very minor) difference in the weight of the log or item produced, and the color of the wood from underground "trees" - otherwise all trees are identical, equal in usefulness and value.*

(* Note that Template:Ls can alter a dwarf's perception of the value of items made from a type of wood that they prefer.)

Viewed on their same Template:L, many different sub-types of trees have their own symbol, such as ♣, ♠, ¶, ╞ or ⌠. 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.

Trees viewed from one z-level higher look like coloured rectangles ( ■ ), appearing identical to coloured Template:Ls floating in the air. Deciduous trees will change colour to red or yellow in autumn ( ♣, ♠ ), and lose their leaves in winter ( ╞ ) (controlled by the [AUTUMNCOLOR] tag.) 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 mangos, maple syrup, nuts, rubber, etc.

Harvesting / Removing the barrier

Trees are a type of Template:L that forms a solid barrier, like Template:L or Template:L. Trees (but not saplings) will block movement, and prevent designation of Template:Ling, Template:Ls and other Template:Ls. Template:Ls are especially vulnerable to being blocked by trees, since they require a path 3-tiles wide. Trees do not form a floor on the level above them - creatures cannot walk "on top of" trees.

They must be designated for removal from the designations menu chop trees, which will instruct Template:L with the Template:L Template:L enabled to grab an Template:L and begin chopping down the tree. Once cut down, they become one Template:L log, which is movable and can be hauled by enabling the Haul Wood labor on any dwarf and designating a wood Template:L.

Tree growth

Trees grow from saplings, which start growing randomly on tiles of a suitable biome. Saplings can be killed by heavy Template:L, 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.

List of Trees

Tree Name	Tile	Biome / Habitat	Alignment	Deciduous	Density (g/cm3)	"Likes them for their..."
Acacia	♣	Tropical Dry Broadleaf Forest (Dry) Tropical Grassland Tropical Savanna Tropical Shrubland	All	No	500	thorns
Alder	♣	Any Temperate Broadleaf Forest (Dry)	All	Yes	410	catkins autumn coloration
Ash	♠	Any Temperate Broadleaf Forest (Dry)	All		620	flying keys autumn coloration
Birch	♣	Any Temperate Broadleaf Forest (Dry)	All	Yes	670	catkins silver bark autumn coloration
Black-cap	♠	*Subterranean Cavern (layers 2-3)	All	No	600	gloomy appeal
Cacao tree	Γ	Tropical Moist Broadleaf Forest (Dry)	All	No	500	flowers
Candlenut	Γ	Any Tropical Forest (Dry)	All	No	500	nuts
Cedar	↨	Temperate Conifer Forest (Dry) Tropical Conifer Forest	All	No	380	majesty
Chestnut	♠	Any Temperate Broadleaf Forest (Dry)	All	Yes	500	smelly catkins spiny pods chestnuts autumn coloration
Feather tree	♣	Not Freezing (Dry)	Good	No	100	feathery leaves
Fungiwood	♣	*Subterranean Cavern (layers 1-2)	All	No	600	fine grain
Glumprong	┤	Not Freezing (Dry)	Evil	No	1200	living shadows
Highwood	¶	Not Freezing (Dry)	Savage	No	500	magnificence
Larch	↑	Taiga Forest (Dry) Temperate Conifer Forest	All	Yes	590	cones needles
Mango	Γ	Any Tropical Forest (Dry)	All	No	500	sweet-smelling flowers
Kapok	Γ	Tropical Moist Broadleaf Forest (Dry)	All	No	500	buttresses
Mahogany	♠	Any Tropical Forest (Dry)	All	No	600	loose inflorescences
Maple	♣	Temperate Broadleaf Forest (Dry) Temperate Grassland Temperate Savanna Temperate Shrubland	All	Yes	755	autumn coloration
Oak	♠	Any Temperate Broadleaf Forest (Dry)	All	Yes	700	acorns autumn coloration
Palm	Γ	Any Tropical (Dry)	All	No	500	leaves
Pine	↑	Taiga Forest (Dry) Temperate Conifer Forest Tropical Conifer Forest	No		560	cones needles
Rubber tree	Γ	Tropical Moist Broadleaf Forest (Dry)	All	No	500	branch shedding
Saguaro	╞	Any Desert (Dry)	All	No	500	amazing arms
Mangrove	♣	Mangrove Swamp (wet)	All	No	500	roots
Tower-cap	♣	*Subterranean Cavern (layers 1-2)	All	No	600	great size
Tunnel tube	│	*Subterranean Cavern (layers 2-3)	All	No	600	curving trunk
Willow	⌠	Any Temperate (Wet) Any Tropical Forest Tropical Grassland Tropical Savanna Tropical Shrubland Tropical Freshwater Swamp Tropical Saltwater Swamp Tropical Freshwater Marsh Tropical Saltwater Marsh	All	No	420	sad appearance fluffy catkins