Tutorials/Best biomes for homes

One of the most important things about a shelter is where it is. Here you'll learn about the biomes to build your base in and the pros and cons. Please note that this is currently under construction.

General Issues
There are some issues that are common to several biomes, offering benefits or disadvantages for any biome where they apply.

Desirable

 * Flat -- relatively easy to build on, easy to fight or evade mobs.
 * Trees-(Wood)- easy start for crafting and building.
 * Scenery -- Some biomes are particularly spectacular, to the point where this can be a reason in itself to build there.
 * Villages -- Villagers can be traded with, and provide farms early on. However, they also attract zombies, and if the player stays nearby overnight, the zombies are likely to kill off the villagers (if not the player). This can be avoided by getting a bed early on, which prevents a majority of zombies, if not all, to not spawn or burn down in day, by skipping the night.

Undesirable

 * Crowded -- some biomes are simply hard to get around due to too many trees or hills.
 * Heights -- mountainous (and jungle) biomes offer greater chance of falling to one's death, and may make it more difficult to build farms or homes on the surface. Mobs may be hard to avoid, or collect in valleys.  Lava flows may also be hazardous.  For advanced players, though, fast travel over the neighborhood is made easy with use of Ender Pearls and Elytra.
 * No/Few Animals -- some biomes do not spawn animals when generated. Others lack grass, so animals cannot spawn over time.
 * Scarce Stone -- some biomes have little if any stone available on the surface, making for a more difficult start.
 * Scarce Wood -- some biomes have few or no trees, making for a more difficult start.
 * Dense Woods -- where leaf cover is widespread, mobs may survive or even spawn during the day. More densely packed forests can also be difficult to navigate, and provide hiding places for mobs to ambush players.
 * Snowy -- in snowy biomes, sugar cane is likely to drop quickly, and the water blocks hydrating farms will freeze if not protected. Snow can also impact visibility. However, snow and ice can be harvested.
 * Watery -- hard to get around or escape mobs, difficult to build large farms or structures. A boat can help, bridges can be built, and advanced players can use one Frost Walker enchantment. However, mobs will not spawn on water.

Extreme Hills
One of the most spectacular biomes, with arches and stone cliffs. Also one of the most difficult to get around. The Extreme Hills is better for building bases in the hills, not on the hills. Large surface caves, floating mountains, and overhangs are often found. Snow falls above y-level 95, allowing for snow farms and ice farms in this biome.

Pros

 * The scenery of the Extreme Hills biome is something to be desired.
 * Emerald Ore is scattered underground, providing a helpful start for future trading. There is also quite a bit of exposed coal and stone.
 * One of the better biomes to farm ice and snow. The farm must be built over y=95, but most mountains reach far beyond that height.
 * Exposed stone makes it easier for beginning players to obtain it, in turn making it easier to upgrade both gear and building materials.
 * Find lava without having to go down deep into a cavern, as lava will commonly spawn on the surface and allow you to build whatever you need with it (cobblestone generator, Nether portal, mob farm, etc.)
 * Some trees, which are handy for starters, although they are few and far between.

Cons

 * Heights. Falling will often kill depending on the height. The vibrant environment of the Extreme Hills makes it hard to find an existing landmark to know where your inventory's contents are. The terrain is not easy to explore to get to your items very quickly, and getting there will take a lot of hunger and food.
 * Rather hard to build on the hilly terrain.
 * Hard to find Sugar Cane due to the lack of apparent open lakes.
 * There are few trees, which is a necessity for beginning players.
 * Monster Eggs (releasing Silverfish) are also scattered underground, which can be dangerous for the unprepared.
 * Few ores spawn in the cliffs because they are so high.

Useful Resources
Cobblestone, Snow, Ice, Stone, Emerald, Coal

Tips

 * To avoid Silverfish, see how long it takes to mine the supposed stone block. If it takes too long or takes the same time with any tool, it is a Monster Egg. You can also mine them with a silk touch pickaxe if you have one, because if they're mined with a silk touch pickaxe, they don't spawn silverfish. Consult the Monster Egg page for more information.
 * If you get a critical hit, you may be able to kill a Silverfish in one hit (so you don't awaken others) with an iron or diamond sword.
 * To obtain more wood, gathering saplings or building your house near a wooded biome (like a forest) is advised.
 * Watch for the falls. Boots enchanted with Feather Falling are strongly advised.

Swampland
The Swampland offers flat space (admittedly much of it is flooded), plenty of trees, water, and clay. Witch huts appear here, and slimes spawn on the surface. Mushrooms are fairly common, allowing for early mushroom stew. Lily pads are common and useful. Blue orchids are exclusive to swamps. The water also interferes with the spread of fire.

Pros

 * Flat surfaces.
 * Slimes, which will drop slimeballs upon death. Slimeballs are used to craft sticky pistons and slime blocks, making this biome useful for redstone-knowledgeable players.
 * Witch Huts will spawn witches continuously. This allows for witch farming, which brings farming of redstone, sugar, glowstone and pre-brewed potions.
 * Fire does not spread in this biome, due to trees being spaced out to allow "forest" fires.
 * A lot of ponds, lakes, and ocean overlapping can mean it is a good place for fishing.

Cons

 * Extremely flooded. It is very hard to attempt to build anything here without reforming the landscape.
 * Depending on your equipment and skill level, the extra slimes may be overwhelming.
 * If you are bringing any tamed cats, dogs and/or any other animal through the region on leads, they may become stuck under a lily pad and suffocate.
 * Water is gray which means not good for building water based decorations.

Useful Resources
Clay, wood, sugar cane, vines, mushrooms, slimeballs, lily pad, blue orchids

Tips

 * Consider building bridges out of lily pads or other blocks.
 * A squid farm is feasible here, although the terrain makes it awkward to build large, symmetrical tanks for the squid to spawn in.
 * The Depth Strider enchantment is helpful for traveling in water.

Plains
The Plains is a good biome for a player's first house.The lack of obstruction makes it fairly quick to walk or sprint around. The flat ground makes it easy to create a large house, and NPC Villages are common. Horses spawn here, allowing for even faster transportation.There is a lot of tall grass, making it easy to get seeds and start a wheat farm. This biome has many gullies and short hills. Wood is scarce, but Forests are likely nearby. If an NPC village is handy, it can provide a quick start to farming, and if needed, the houses can be mined for wood.

Pros

 * Flat landscape for easy building and traveling.
 * Plentiful Tall Grass for initial seed farms.
 * The presence of animals offers much-needed meat and resources like Leather and Wool. As compared to other "green biomes" like the Forest, the spawn rate of passive mobs is not increased, but the lack of obstruction makes them easier to find and offers more spawning areas that are usually covered with trees.
 * Villages that offer great trades, potential blacksmith loot, and maybe a good shelter.
 * Horses spawn exclusively here or in the Savannah. They offer great mobility and combat advantage.
 * The Sunflower Plains offer sunflowers.
 * The abundant Tall Grass can sometimes hide you from monsters (or surprise them), even when you're on the move
 * Both Water and Lava lakes spawn here, often easily identified due to the flat landscape, and can provide plentiful resources for various advanced tasks.
 * Fewer trees means the undead have little protection from sunlight.

Cons

 * Scarce wood (although Forests nearby can take care of that as can replanting saplings you get from leaf decay).
 * Many open caves which can disrupt the flat landscape, and mobs such as Zombies can come out of the caves to attack you.
 * When in combat you will often find yourself swinging your sword at the Tall grass rather than at your opponent.
 * Skeletons and Witches can more easily shoot you down due to the lack of obstruction.
 * Tall Grass can clutter your Inventory with seeds, and can be annoying to clear out in the case of building a large structure.
 * Players and animals can accidentally fall into the few Lava lakes, and die within seconds.

Useful Resources
Sunflowers, Seeds, Lava, Horses, Wood

Tips

 * Consider building your first or permanent house here, with resources you've acquired from other biomes.
 * It is recommended to not kill all the villagers or leave them vulnerable to zombies by breaking their houses for wood. Eventually, iron golem farms or fully automatic wheat farms will all become possible through villagers, not to mention they offer renewable diamond equipment.
 * Clearing out Tall Grass can be quickly done by dumping water on the ground to wash it away.

Cold Taiga
The Cold Taiga is a snowy, cold biome. It is a place with lots of snow, ice and trees. Wolves will spawn here, and if you tame them, they will follow you, love you and protect you. Snow falls instead of rain, so inefficient snow farming is also possible. These biomes tend to lack sugar Cane due to the water freezing, causing it to uproot. Because of this, many of YOUR water sources may freeze up too, which can be annoying. Snow on top of your shelter can annoy you, and the tall Spruce Trees may be too tall to be harvested easily, and if having fewer leaves, they may drop few saplings.

Pros

 * Plentiful wood in the tall trees.
 * Ice Farms and Snow Farms can be built here and, unlike even the Extreme Hills, do not require to be above y=95.
 * Wolves can be found here and tamed.
 * Igloos spawn here.

Cons

 * The Cold Taiga is inconvenient to farm in, because irrigation water freezes into ice if not protected from freezing by light sources like torches.
 * It snows a lot and that is uncontrollable, and can leave annoying snow patches on your structures.
 * It is rather hard to find Sheep here as Wolves will kill them.
 * Be careful when living in the Cold Taiga, as the last thing you want is a pack of wolves attacking you!
 * It is commonly a safe haven for undead Mobs during the day, they could hide under spruce trees and end up surprising you.

Useful Resources
Snow, Ice, Wood, Ferns

Tips

 * It is advised not to build something here unless you want to let it be covered in snow.
 * Do not attack wolves as they will group up like Zombie Pigmen and possibly kill you... not to mention it being foolish to make enemies out of potential allies.
 * To completely chop the tall trees, try to pillar jump.
 * Alternatively, if you have the Treecapitator mod, the tree will come down automatically, as if by gravity.

Mega Taiga
The Mega Taiga is a variant of the regular Taiga which spawns with huge trees that have few leaves but can give you a stack of wood from each. Coarse Dirt spawn here making the area look dead (or aseptic). However, there are many ferns and double ferns that may otherwise be rare and Podzol, which is a good alternative to Mycelium (since Mushrooms can be placed on it in daytime). Moss stone spawns naturally here making it so you don't need shears (for Vines) to craft it and because it is a variant of the taiga, Wolves spawn here!

Pros

 * Comes with Podzol, the only place to find it.
 * Comes with Moss Stone which can be useful for aesthetic buildings.
 * Wolves can be found and tamed here.
 * Coarse Dirt can be found here (although it can also be crafted).
 * Plenty of Wood to go around, possibly more than the Forest but harder to harvest. It is best to gather the first 5 meters (vertically) of a tree on your first day, then you can start getting more later on.

Cons

 * Trees have relatively few leaves (hence Saplings) and can be hard to harvest due to their height and lack of foliage to stand on.
 * Other than offering the rare Podzol, Coarse Dirt or Moss Stone blocks, there is not much that this biome offers in terms of progressing through the game.
 * Just like its snowy counterpart, it can house several hostile Mobs in the shade of its trees.

Useful Resources
Podzol, Moss Stone, Ferns, Wood

Tips

 * The trees give off Spruce wood. Since it's possible you may have started out somewhere with Oak trees, keep in mind your inventory might be cluttered if you collect different types of wood and their plank variants.
 * Be wary of the environment. The trees spawned here are 2x2 spruce trees.
 * To cut down these trees, cut into it in a spiral pattern, making a thin spiral staircase all the way to the top. Then, destroy the stairs as you walk back down the tree.

Desert
The Desert is an inhospitable biome which many players dislike. Non-renewable Sand can be obtained in large quantities, and Cacti may otherwise be rare in other biomes. No water spawns here, which poses a problem if spawned deep within these biomes. Also, no passive mobs spawn here with the chunk generation, and no grass means no animal spawn after. No trees spawn here, either. But many advanced players like this biome for its deserted landscape and desired Sandstone. Though not the best biome for the beginner, it is still a nice biome to live in after you've got your initial house set up somewhere else.

Pros

 * Desert temples spawn here.
 * Desert villages spawn here.
 * Generally flat terrain.
 * No rain, that means no thunderstorms causing any trouble.
 * Lots of Cactus and Dead Bushes.
 * Lots of Sand means you can get lots of Sandstone, TNT and Glass. Sand and sandstone are quite rare in other biomes.
 * The bright sand can make it easier to see in the dark, and the Mobs that come with it.
 * Undead mobs will have a harder time trying to find shade during the day with the lack of foliage.
 * Rabbits spawn here, which offer food when the desert doesn't spawn many animals.

Cons

 * Little water (except in Desert M, a variant of desert) which causes difficulty in many water-related activities, especially farming. However, villages and desert wells can be good sources of desert water.
 * Lack of rain also means you can't boost the time of fishing, and you can't hydrate crops if the desert is lacking any water sources.
 * No Grass.
 * Difficult to farm.
 * No trees or reliable way to naturally get Wood.
 * Sand can suffocate you while mining near the surface.
 * Like the Plains, you can get shot down by Skeletons due to the lack of foliage shielding its shots.
 * Husks, a variant of Zombies, makes up 80% of Zombies found there. They give the Hunger effect when they hit. Also, Husks will not burn in daylight, and can therefore can be dangerous for players who have trouble during Mob fights

Useful Resources
Sand, Cacti, Dead Bushes, Sticks Sandstone, Sugar Cane

Tips

 * Spawning in a Desert is a rough time. For newer players, it is recommended to wander to another biome or accept the great challenge to come.
 * Coming to the Desert to mass-collect the sand in bulk is great if you need glass or sand.
 * If you find a Desert and expect to need Sand in the future, set up a base in somewhere more habitable and come back later.

Mushroom Island
The Mushroom Island is very rare, and is rarely connected to the "mainland" in any way. So why is it so great? Because no monsters naturally spawn here, no matter where you are. dungeons and abandoned mineshafts still will, however. It is completely safe for new players, and still great for experienced players. The one mob that does spawn there, mooshrooms, can be sheared for red mushrooms or "milked" with a bowl to get mushroom stew or with a bucket to get milk, so it is an infinite food source! Finding one can be an amazing feat that many challenged players wish to do. The mycelium is useful for growing mushrooms, and this is one of the two biomes with huge mushrooms (the other being Roofed Forests). It is not the greatest biome ever due to its lack of mob spawning, which means that gunpowder is unavailable in your reach.(String, spider eyes, Rotten flesh, bones, and arrows are available from monster spawners) Trees also don't spawn here, meaning that wood is unavailable. Since Mushroom Islands are rare, search for the mainland, get wood and saplings, and immediately come back.

Pros

 * Mycelium, on which you can plant mushrooms independently of the light level, like podzol. Contrary to podzol, though, Mycelium will spread like grass, making it a somewhat renewable resource.
 * Mooshrooms spawn here, and give a reliable infinite food source, as long as you have bowls in stock.
 * Huge mushrooms, both types, spawn here, allowing for more mushroom collecting and using the mushroom block as a building material (if you have a Silk Touch shovel).
 * No hostile mobs on land spawn, which means an overall safer experience.

Cons

 * No natural light-based mob spawning means creating a mob farm without a spawner is impossible or without transporting animals and breeding them. This means the only ways to obtain drops such as bones (which speed up crop growth), string (to craft bows), or arrows (for use in bows) is to build out over the ocean.
 * No wood. No wood means no first set of tools or crafting table or anything crafted with cobblestone or wood. No wood also means no bowls, and that negates the effect of mushroom stew.
 * Rarely connected to any other land, and if you spawned here for the first time, you will have a very hard time going to the mainland due to your hunger going down from swimming. You can use a boat to travel the ocean, but you need wood to craft that.

Useful Resources
Mycelium, mushrooms, mushroom stew, milk

Tips

 * Like the desert, come back here after venturing to the mainland so you can have wood to start your gameplay with.
 * You can get dirt blocks to build a bridge to the mainland.
 * If you find one of these biomes when in a boat, use the extra space to take a mooshroom with you back to your base.

Forest
The Forest is a good place for the beginner because it gives a lot of wood, but it doesn't have enough space between tree to build anything too big without cutting down a few. After getting a lot of wood, an advanced player may move out of the forest to a more convenient biome to build large houses or castles in. Note that for the beginning player, this is an extremely dangerous biome at night. The trees hide mobs and make it hard to avoid Creepers. Skeletons can snipe you down. Large groups of Zombies may be hidden by foliage. Spiders can surprise you by leaping down from the treetops. Mobs that do spawn will often survive the day in the shade.

Pros

 * Lots of wood, which is a resource both new and experienced players require, able to craft nearly every item or an item to unlock another item in the game.
 * High frequency of hills makes for a good scenery.
 * Though normal houses may be hard to build, a treehouse is always a good solution.
 * The density and low height of tree tops can provide a useful alternative mode of travel, especially at night, since spiders cannot climb past the leaves and other harmful mobs cannot find many ways to follow you - especially since they cannot jump over small gaps between trees. Just don't fall down!
 * Has a chance of being a "Flower Forest", and in that case, the biome will be filled with exclusive flowers that are great for decorating.

Cons

 * Rather inconvenient to build in.
 * Trees obstruct visibility.
 * It is difficult to recognize any one section of the forest, which can be bad if you get lost.
 * Mobs are prevalent here. Skeletons can shoot you from around-the-corner, Creepers can sneak up from you from behind trees, and undead mobs have plenty of shade to shelter in during the day.
 * Hard to run through due to the high amount of trees blocking your path. Also, horseriding here is near impossible. In a game mode where you must respect your health as much as possible, this will be very dangerous, as suffocation in the trees is likely and hard to avoid without carefully travelling at speeds lower than simply sprinting without the horse.
 * Fire and Lightning strikes are an issue here.

Useful Resources
Wood, Flowers

Tips

 * Consider making this your resource base.
 * Be wary of fires. It's far worse here than in every other biome except for the Nether (and maybe the Jungle)
 * Sometimes getting on top of trees helps. Your visibility of the forest will increase and you will be able to travel faster. It also acts as a temporary shelter during night if you are desperate; if you break the blocks you used to get up, usually mobs cannot reach you.

Mesa
The Mesa is beautiful, and boasts a lot of Hardened Clay. While only a select few variants have some useful trees to start out with, you'll want to come back here to enjoy the scenery. When not enjoying the scenery which allows many structures that look here and no where else, you can mine out the Hardened Clay for other projects. Like the Desert or Mushroom Island, start out somewhere else and return here when ready.

Pros

 * Hardened Clay and Stained Clay can be mined out here for future projects.
 * Scenery is great for building here in the natural plateau.
 * The only place where red sand can be found, which is useful for red sandstone, glass or TNT.
 * Plenty of cactus.
 * Good source of gold.
 * Surface-level abandoned mineshafts generate, which can be a source of dark oak wood as well as a good place to find gold and loot.
 * You can easily get sticks by breaking the dry grass without need to craft them, a good strategy since this biome almost lacks of trees.
 * Mineshafts are easier to find.

Cons

 * Not much surface-level or near-surface-level Stone.
 * It is rather hard to find Wood here, and while the Mesa F can have Oak Trees, relying on the chances of spawning there is not efficient.
 * Lack of passive mobs and therefore meats and their other products cannot be obtained.

Useful Resources
Hardened Clay, Stained Clay, Dead Bushes, Red Sand, Red Sandstone, Cactus, Gold

Tips

 * Make sure to collect the Saplings from the trees in the Mesa F biome! You want to make sure you will never run out of trees or their saplings.
 * Use a Mineshaft to get down somewhere you can get Stone and ore.

Ice Spikes Plains
A very interesting biome with its random giant spires of packed ice, and is very beautiful like the Mesa, but also like the Mesa, lacks resources. However if near a biome with more resources you could build an interesting base there. This biome is also good for building homes that are more for show than for function. The taller ice spikes can be made into a tower with some work, although, inside, it will be little more than a spiral staircase with a room on top. The smaller ones can also be hollowed out and used to make an igloo. Practically though, this biome is not good for much.

Pros

 * Great source of ice and snow.
 * These biomes are relatively rare (similarly to the mesa biomes) but are very nice to look at.
 * The packed ice can be used for spawn areas for mob grinders.

Cons

 * No wood naturally spawns in the Ice Plains biome. This is a horrible place for a beginner to build a house because there is no wood, meaning the only way you can successfully live in the biome is if there is a biome with wood nearby that you can harvest wood from.


 * The Ice Plains biome is extremely difficult to farm in. Because the biome is so cold, water will freeze unless protected. This means that you will have to go through extra work to build your farm inside your house or underground. Because of this, no natural sunlight would be there to boost the crops's growth, meaning that you would have to go through extra trouble to provide illumination.

Useful Resources
Packed ice is a non-renewable resource exclusive to this biome. It is useful for making fast item or mob conveyors as, like normal ice, it is slippery and increases the speed of entities when being pushed by a water current. However, packed ice does not melt when exposed to a light source, nor does it become a water source block when broken.

Ocean / Deep Ocean
Not the best place for living, but advanced players may find Deep Oceans useful for Guardian farming. An underwater base may also look impressive.

Pros

 * Abundant supply of ink sacs.
 * No mobs (except squids, or occasionally guardians) spawn.
 * Ocean monuments are found in Deep Oceans. This is the only source of resources like sea lanterns, prismarine and sponges, and can be used to create guardian farms.
 * A good, deep source of water for fishing in.

Cons

 * Lack of land for building houses, and difficult to get around without a boat or boots with Depth Strider or Frost Walker enchantments.
 * Guardians can be found in Ocean monuments, which may be deadly to unprepared players.
 * No Mobs, or even hostile Mobs except Guardians may spawn in these biomes due to it being mostly water, unless there is a place dark enough to do so, while this is an advantage, it will also make it harder to get valuable resources such as string.
 * Nearby ocean monuments may cause one of the elder guardians to attack you with mining fatigue, preventing you from progressing due to this making early-game resources like coal taking too long to be mined out.

Useful Resources
Water, Prismarine shards, Prismarine crystals, gold, sponge, wet sponge, ink sacs

Jungle
Although the Jungle may not be the best place to start for new players, there is a lot of wood to cut down, as giant jungle trees are the biggest trees in the game. Also, if you can avoid the traps, the Jungle Temple have loads of good loot to take. The only problem is that the leaves are everywhere, and it's extremely hard to navigate, so it can be confusing. Just don't forget the Vines can be used more even than Swamps to avoid depleting Hunger (from jumping) - or suffering from a long Drop - as much as usual. And mind the Mobs which can Spawn on horizontal surfaces of Trees.

Pros

 * Loads of wood.
 * Jungle temples have loot in them (they can serve as houses, too). Just be careful of the dispensers that shoot arrows.
 * Ocelots spawn naturally. This will scare away creepers, which may be hard to notice due to their green texture and dense amount of foliage.
 * Lush beautiful grass
 * Melons and cocoa beans spawn naturally.
 * The large jungle trees can be made into treehouses, which are easy to protect.

Cons

 * Limited space for building due to the thick tree foliage.
 * It's easy to fall out of a tree, which, because giant jungle trees are far larger than those in other biomes, may be lethal.
 * Very difficult to navigate through.
 * May be more laggy than other biomes.

Useful Resources
Jungle Wood, Vines, Melons, Loot from Jungle Temple, Cocoa Beans, Ocelots

Savanna
This is a rainless version after Grassland, with plateaus for greater range of building. Abundant trees are never quite as thick as anywhere else, with less vegetation than a Swamp to obscure vision. The highest elevations are to be found here. But such mountainous views to others could be well worth it. The diversity of views possible offer flat, semi terraced, and sheer vistas.

Pros

 * Trees are rather abundant.
 * Horses can spawn.
 * Villages can spawn.
 * This is the only biome where Acacia trees spawn naturally.

Cons

 * Lack of water from rain makes farms slightly harder to make. Passive mobs (Sheep, Cows etc.) do rarely spawn
 * Grass is very thick in this biome, can hide Spiders, can camouflage Creepers and is very hard to get rid of without a bucket.

Useful Resources
Acacia and Oak Trees, Horses, NPC Villages, Double Tall Grass for Seeds, all other Passive Mobs

Roofed Forest
This is the only place that Dark Oak trees naturally spawn. Beginning players can chop a single tree down for more than half a stack of wood, plus saplings and the occasional apple. This biome suffers of the same navigation issues as a regular forest, plus all the monsters that'll be hanging out under the trees during the daytime; this makes the roofed forest a dangerous place to live.

Pros

 * Lots of wood.
 * Large mushrooms. These can be used as quick shelters.
 * The "roof" of the forest is safe. Mobs do not spawn on the leaf blocks.
 * Woodland mansions can spawn here, which can provide instant shelter but are very rare and difficult to find. The player will also need to clear the mansion of hostile mobs. The mansion can be then turned into a base once cleared and looted, and is generally easy to find after doing so because of how large and easy to notice a mansion from far away, and your explorer map may be fully explored.
 * Woodland mansions also provide emeralds, but are not farmable here, due to Vindicators and Evokers not programmed to respawn. It is best obtained by trading.

Cons

 * Can be difficult to navigate.
 * Leaves block out most of the sky, allowing undead mobs to be active throughout the day. It is usually dark enough on the forest floor to spawn even more monsters.
 * Trees may hinder construction.

Useful Resources
Dark Oak wood, Mushrooms, Totem of Undying, Emeralds