Tree

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v50.14 · v0.47.05 This article is about the current version of DF. Note that some content may still need to be updated. More Info · V

Trees are generally present in the caverns regardless of above-ground conditions, an important feature in a desert biome.

Notice: With DF2014, Trees have recieved significant revision. They are now multi-tile creations, spanning multiple z-levels, with separate tiles for trunk, roots, fruits, twigs, leaves, etc. Exactly how much of the remainder of this article still applies is yet to be determined.

Trunks can be chopped down, yielding multiple logs. A single tree can have multiple trunk tiles, on separate z-levels as well as otherwise, but only one tile of trunk can be designated for chopping on a single tree, so make sure you pick one that can be reached.

Roots can be designated for digging, though the tile doesn't flash to indicate it's designated. Some trees can have multiple tiles of roots, others just the one; in either case, when a single tile of roots is dug out, the entire tree vanishes without a trace.

Fruit can be picked in Adventure mode, but Fort mode harvesting is not yet in the game. You can trade for or embark with them though, and brew them at a still.

Leaves will fall in autumn, colouring tiles beneath a tree. Some can be cooked at a kitchen.

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Trees are a multi-tile feature that can be found aboveground on all but the most arid or most mountainous of maps, and below ground in the caverns. What kind of trees grow in a given location depends on biome, as different species prefer different conditions. For example, tropical areas often have palm trees, while colder areas feature pines. An exception are underground trees, such as nether-caps, that will grown anywhere underground. The species of a tree in turn determines its properties, including its structure, the color and density of its wood and what kind of growths it produces. Note also that "trees" in DF covers also things that are not literally trees, such as large cacti (e.g. saguaros) and mushrooms (e.g. all underground trees).

Structure

Trees consist of several types of tiles - roots, trunks, branches and twigs, as well as a number of "growths" (leaves, needles, flowers, fruit, cones, etc., depending on species). A single tree is a structure that can span multiple tiles in both horizontal and vertical directions. For example, a typical deciduous tree will have a single tile-wide trunk at ground level supporting a multiple-level crown of intertwined branches and twigs covered with leaves. Not all species follow the same scheme, though - palms have a high, naked trunk that doesn't branch and just a tuft of leaves on top of it, and some species can have trunks that are thicker than a single tile at ground level. Underground, things are simpler, as there is only one kind of root tiles and the extent of the root system doesn't seem to vary with species.

Trees can be climbed in both fortress and adventure mode, and the levels of the crown provide support for walking. In a densely wooded areas, the overlapping tree crowns can form a continuous canopy that can be traversed.

Viewed on their same z-level, many different sub-types of trees have their own symbol, such as ♣, ♠, ¶, ╞ or ⌠. Some share the same symbol, but since the differences are only in preferences, this is not a significant problem (see table below for symbol pairings). For most purposes, a tree is a tree. Trees viewed from one z-level higher look like coloured rectangles ( ■ ), appearing identical to coloured blocks floating in the air. Deciduous trees will change colour to red or yellow in autumn ( ♣, ♠ ), and lose their leaves in winter ( ╞ ).

Tree trunks are a type of map tile and as such will form a solid barrier to movement, preventing channeling or the creation of walls and other constructions on their tile. This is problematic for caravan wagons, which require a path at least three tiles wide in order to access your fortress; on heavily forested maps it may be necessary to check depot access (D) every once in a while as trees continue to grow to make sure wagons can get through, and chop down (d-t) the impeding forest if they can't. Later on this can actually become a blessing, as if there is only one or a few pathways to the fortress it makes it easier to route incoming caravans down certain well-defended pathways, instead of allowing them to choose their own way across the map, where they may fall foul of ambushers or worse. It also makes building above-ground constructions more challenging, as any trees in the way must be chopped down first.

Wood

Chopping down trees yields wood (obviously), one of the game's most important resources. Without wood it is not possible to build beds, generate or transfer power, create ash, or power furnaces without magma (unless coal is available), and since wood is easily craftable many items become more difficult to craft. Thus a lack of trees can be an important deterministic factor in fortress development, as without a ready source of wood the player will be forced to rely on caravans for wood item production and possibly magma for metal-forging (that being said, it is not impossible to circumvent). The density of growth on the embark site is determined by the biome, and those are visible on the pre-embark screen by hitting F1, F2 etc. The tree density of the biome does not change as there are no climate shifts during game play, but heavy woodcutting activity will eventually strip any forest bare.

One of the variation between the different tree species is in the weight and color of their wood. Weight is often a minor concern but when using wood to create objects that will be moved, such as bins or buckets, choosing lighter wood is an advantage as it will be hauled faster. Heavier wood will make wooden weapons and siege engine projectiles more effective, while lighter wooden shields reduce penalties to speed while blocking just as well as heavier shields.

Nonetheless, all trees have the same intrinsic value^[Verify] (beyond the preferences of individual dwarves), although the color of the wood may matter for aesthetic purposes.

Growth

Extensions being made to a in-hill tree farm.

Trees grow from saplings, which start growing randomly on non-occupied tiles of a suitable biome; thus chopping down a forest may create a clearing, but within a couple of years a new forest will have grown. Saplings can be killed by heavy foot traffic, but not by flooding — they can survive submergence for extended periods of time and will still grow to maturity once the water level drops to 4/7^[Verify] or lower. Dead saplings will remain for some seasons, and then disappear, more quickly if heavy traffic tramples them away. Growth from a sapling to a tree takes exactly 3 years. Many underground trees are called "young <tree>" instead of sapling, but the concept is the same. Saplings will not grow to maturity if their tile contains an item or building (including stockpile designations), though removing the item may cause the tree to spontaneously grow up. Paved roads and farm plots periodically purge all terrain features below them, preventing trees (or shrubs) from growing in unwanted areas. Trees cannot grow on stairs or ramps, making it possible to keep trees out of your plumbing by using up stairs instead of digging (this does not reveal the tile above). Above-ground trees will only grow in areas where there is sufficient soil 1 Z-level beneath them (currently observed to be at least one unmined tile within a two-tile radius); underground trees not only ignore this restriction for dry subterranean soil but will also grow on muddy subterranean stone. Additionally, saplings on soil cavern floors will block the construction of farm plots unless there is also a dusting or pile of mud beneath them.

Trees cannot be specifically "planted"; even if a map is stripped of all trees, new saplings will regrow, randomly and in their own time. Sadly, the elves do not seem to comprehend this. It is possible to farm trees by walling off or engineering a patch of soil and locking it away so your dwarves don't trample all over it, but it will take a long time for the farm to yield results. After you expose the caverns subterranean flora (including trees) will begin to grow on any exposed and previously bare soil within your fortress; this can be annoying when a copse of blood thorns suddenly appears in your sand collection area, but allows you to easily mine out large subterranean tree farms full of colorful subterranean trees.

List of tree species

Tree Name	Tile	Biome / Habitat	Alignment	Deciduous	Density (g/cm3)	"Likes them for their..."
Acacia	¼	Tropical Dry Broadleaf Forest Tropical Grassland Tropical Savanna Tropical Shrubland	All (Dry)	No	0.600	thorns
Alder	¼	Any Temperate Broadleaf Forest	All (Dry)	Yes	0.410	catkins autumn coloration
Almond	♣	Any Temperate Broadleaf Forest	All (Dry)	Yes	0.410	catkins autumn coloration
Ash	¼	Any Temperate Broadleaf Forest	All (Dry)	Yes	0.600	flying keys autumn coloration
Birch	¼	Any Temperate Broadleaf Forest	All (Dry)	Yes	0.650	catkins silver bark autumn coloration
Black-cap	¼	Subterranean Cavern (layers 2-3)	All	No	0.650	gloomy appeal
Blood thorn	¼	Subterranean Cavern (layer 3) Subterranean Chasm	All	No	1.250	sickening appearance
Cacao tree	¼	Tropical Moist Broadleaf Forest	All (Dry)	No	0.430	flowers
Candlenut	¼	Any Tropical Forest	All (Dry)	No	0.140	nuts
Cedar	¼	Temperate Conifer Forest Tropical Conifer Forest	All (Dry)	No	0.570	majesty
Chestnut	¼	Any Temperate Broadleaf Forest	All (Dry)	Yes	0.430	smelly catkins spiny pods chestnuts autumn coloration
Feather tree	¼	Not Freezing	Good (Dry)	No	0.100	feathery leaves
Fungiwood	¼	Subterranean Cavern (layers 1-2)	All	No	0.600	fine grain
Glumprong	¼	Not Freezing	Evil (Dry)	No	1.200	living shadows
Goblin-cap	¼	Subterranean Cavern (layers 2-3)	All	No	0.600	stunning color
Highwood	¼	Not Freezing	Savage (Dry)	No	0.500	magnificence
Kapok	¼	Tropical Moist Broadleaf Forest	All (Dry)	No	0.260	buttresses
Larch	¼	Taiga Temperate Conifer Forest	All (Dry)	Yes	0.590	cones needles
Mango tree	¼	Any Tropical Forest	All (Dry)	No	0.520	sweet-smelling flowers
Mahogany	¼	Any Tropical Forest	All (Dry)	No	0.600	loose inflorescences
Maple	¼	Temperate Broadleaf Forest Temperate Grassland Temperate Savanna Temperate Shrubland	All (Dry)	Yes	0.540	autumn coloration
Mangrove	¼	Mangrove Swamp	All (Wet)	No	0.830	roots
Nether-cap	¼	Subterranean Cavern (layer 3)	All	No	0.550	coldness to the touch (wood has [MAT_FIXED_TEMP:10000])
Oak	¼	Any Temperate Broadleaf Forest	All (Dry)	Yes	0.700	acorns autumn coloration
Palm	¼	Any Tropical	All (Dry)	No	0.680	leaves
Pine	¼	Taiga Temperate Conifer Forest Tropical Conifer Forest	All (Dry)	No	0.510	cones needles
Rubber tree	¼	Tropical Moist Broadleaf Forest	All (Dry)	No	0.490	branch shedding
Saguaro	¼	Any Desert	All (Dry)	No	0.430	amazing arms
Spore tree	¼	Subterranean Cavern (layers 2-3)	All	No	0.600	raining spores
Tower-cap	¼	Subterranean Cavern (layers 1-2)	All	No	0.600	great size
Tunnel tube	¼	Subterranean Cavern (layers 2-3)	All	No	0.500	curving trunk
Willow	*	Any Temperate Any Tropical Forest Tropical Grassland Tropical Savanna Tropical Shrubland Tropical Freshwater Swamp Tropical Saltwater Swamp Tropical Freshwater Marsh Tropical Saltwater Marsh	All (Wet)	No	0.390	sad appearance fluffy catkins

Bugs

• In fortress mode, tree fruit (and presumably, other growths) can't be harvested yet, though it's possible to eat fruit in adventure mode. See DF2014:Release information.
• (0.40.2) Constructing on trees causes them to vanish. ^Bug:6551
• (0.40.2) When a root tile is mined, the entire tree ceases to exist. ^Bug:6749
• (0.40.2) Building something (e.g. a cage) in a tree and then chopping down the tree leaves the building floating in the air. ^Bug:6949

V · T · E Plants
Crops and shrubs Surface Crops Alfalfa • Barley • Bitter vetch • Blood amaranth • Buckwheat • Cotton • Elephant-head amaranth • Finger millet • Flax • Fonio • Foxtail millet • Hard wheat • Hemp • Jute • Kaniwa • Kenaf • Maize • Oats • Papyrus sedge • Pearl millet • Pendant amaranth • Purple amaranth • Quinoa • Ramie • Red spinach • Rice • Rye • Single-grain wheat • Soft wheat • Sorghum • Spelt • Teff • Two-grain wheat • White millet Garden Artichoke • Asparagus • Bambara groundnut • Broad bean • Beet • Bilberry • Bitter melon • Blackberry • Blueberry • Cabbage • Caper • Cassava • Celery • Chickpea • Chicory • Cowpea • Cucumber • Cranberry • Eggplant • Garden cress • Garlic • Grape • Horned melon • Leek • Lentil • Lesser yam • Lettuce • Long yam • Mung bean • Muskmelon • Onion • Parsnip • Passion fruit • Pea • Peanut • Pepper • Pineapple • Potato • Purple yam • Radish • Raspberry • Red bean • Rhubarb • Soybean • Spinach • Squash • String bean • Sweet potato • Taro • Tomatillo • Tomato • Turnip • Urad bean • Watermelon • White yam • Wild carrot • Winter melon Other Blade weed • Bloated tuber • Fisher berry • Hide root • Kobold bulb • Longland grass • Muck root • Prickle berry • Rat weed • Rope reed • Sliver barb • Strawberry • Sun berry • Valley herb • Whip vine Subterranean Cave wheat • Dimple cup • Pig tail • Plump helmet • Quarry bush • Sweet pod
Trees Surface Abaca • Acacia • Alder • Almond • Apple • Apricot • Ash • Avocado • Banana • Bayberry • Birch • Bitter orange • Cacao tree • Candlenut • Carambola • Cashew • Cedar • Cherry • Chestnut • Citron • Coconut palm • Coffee • Custard-apple • Date palm • Desert lime • Durian • Feather tree • Finger lime • Ginkgo • Glumprong • Guava • Hazel • Highwood • Kapok • Kumquat • Larch • Lime • Lychee • Macadamia • Mahogany • Mango tree • Mangrove • Maple • Oak • Olive • Orange • Papaya • Paradise nut • Peach • Pear • Pecan • Persimmon • Pine • Plum • Pomegranate • Pomelo • Rambutan • Round lime • Rubber tree • Saguaro • Sand pear • Tea • Walnut • Willow Subterranean Black-cap • Blood thorn • Fungiwood • Goblin-cap • Nether-cap • Spore tree • Tower-cap • Tunnel tube
Grasses Surface Arrow bamboo • Bentgrass • Baby toes succulent • Blue sedge • Bubble bulb • Carpetgrass • Cattail • Cloudberry • Common reed • Cottongrass • Dallisgrass • Dog's tooth grass • Downy grass • Dropseed grass • Fescue grass • Field sedge • Golden bamboo • Grama • Hair grass • Hedge bamboo • Knotgrass • Marsh thistle • Meadow-grass • Meadowsweet • Mountain avens • Needle grass • Pebble plant • Purple moor grass • Reedgrass • Rush • Ryegrass • Satintail • Sawgrass • Staring eyeball • Velvet grass • White mountain heather • Wormy tendril • Zoysia Subterranean Cave moss • Floor fungus • Underlichen