Automatic Tree Farm
An automatic tree farm that uses dispensers to bone meal saplings, observers to detect growth, and pistons or TNT dupers to break the logs. Produces logs, sticks, and apples continuously. Works with all wood types except jungle and dark oak (2x2 trees).
Overview
The Automatic Tree Farm is a farm build whose job is producing a steady supply of one resource with little or no manual labour; form follows function here, so the layout is dictated by how it works rather than by looks. At 9x16x9 blocks (9 wide, 16 tall and 9 deep) it is moderately sized, covering a 81-block footprint on the ground.
It is rated advanced, so expect to manage significant resources and, in many cases, get redstone timing or precise block-by-block placement correct before it works or looks finished. Following the 28 steps below, plan for roughly 2-3 hours of focused building. It is survival-viable, but the piston, observer and dispenser that meter the logs mean you should test the timing in a creative world first so you do not waste materials getting it wrong.
The bulk of the work is the 64 bone meal that form the main body, alongside 6 different materials in total (about 132 blocks and items all told). The working heart is the redstone — piston, observer and dispenser — which is what actually delivers the logs. There is no dedicated light block in the core list, so add torches or lanterns yourself to keep it mob-safe after dark.
Materials Needed
Gather the 64 bone meal first, since it is the most-used block; the remaining 5 materials are accents and fittings used in smaller amounts. Mine roughly 10-15% extra of the main block to cover mistakes and a few decorative changes on a build this size. Make sure the redstone components (piston, observer and dispenser) are crafted ahead of time, as those are the pieces most likely to be missing mid-build. Quantities are sized for the dimensions shown, so scale them up proportionally if you build a larger version.
Click any material to view it on the Items database.
Step-by-Step Overview
A high-level construction order for the Automatic Tree Farm, from the ground up. Each phase below covers several of the 28 in-game steps.
- 1Pick the spot the Automatic Tree Farm needs — ground or water where its logs can grow — then clear it and build the hopper-and-chest collection layer first so no logs are ever lost.
- 2Build the compact 9x9 platform and walls that hold the mechanism for the Automatic Tree Farm in place.
- 3Set up the working part of the Automatic Tree Farm — saplings bone-mealed and the trunk harvested — which is what actually produces the logs.
- 4Keep the grow area for the logs at full sky light, and light the walkways around the Automatic Tree Farm so stray mobs do not wander in.
- 5Build the AFK or harvest spot, run the Automatic Tree Farm for a full cycle, and time the logs output before you rely on it day to day.
Build Tips
- 1Oak is the best choice because it grows fastest and has the simplest shape.
- 2TNT duper versions are faster but more complex to build.
- 3Observer detects the log appearing above the sapling.
- 4Surround the growth area with blocks at the right height to prevent branching.
Tips & Variations
The Automatic Tree Farm has no light block in its core list, so add torches, lanterns or sea lanterns yourself: light every interior tile and the ground around it so nothing spawns on or beside the build overnight.
To resize the Automatic Tree Farm, keep its 9x9 proportions and grow both axes together; stretching one direction alone tends to make it look thin. A half-size or double-size version both work as long as you scale the 132-block material list to match.
For a different look, swap the bone meal in the Automatic Tree Farm for another palette that fits your biome: the shape stays identical, but the colour and texture of the main block changes the whole feel of it.
The most common mistake on the Automatic Tree Farm is wiring before testing: power one section of the piston and observer at a time and confirm it fires before you bury the redstone, because a single misplaced repeater driving the logs is painful to find once it is hidden inside the wall.
Frequently Asked Questions
How hard is the Automatic Tree Farm build?
It is rated advanced, so expect to manage significant resources and, in many cases, get redstone timing or precise block-by-block placement correct before it works or looks finished. It is laid out in 28 steps and takes roughly 2-3 hours of focused building to finish.
What blocks do you need for the Automatic Tree Farm?
The main block is bone meal (around 64), and the full list runs to 6 materials — mostly bone meal, piston and observer. Altogether that is roughly 132 blocks and items; the complete table with exact counts is above. It also needs the redstone components that make it work: piston, observer and dispenser.
How big is the Automatic Tree Farm?
It measures 9x16x9 blocks — 9 wide, 16 tall and 9 deep — which is moderately sized and takes up a 81-block footprint. You can shrink or enlarge it by keeping those proportions.
Is the Automatic Tree Farm survival-friendly?
It is survival-viable, but the piston, observer and dispenser that meter the logs mean you should test the timing in a creative world first so you do not waste materials getting it wrong.
Does the Automatic Tree Farm work on its own once built?
Yes — once the piston, observer and dispenser are placed and timed correctly it produces logs automatically; the only manual job is emptying the output chest, and you may need to stay within simulation distance for it to keep running.
What makes the Automatic Tree Farm different from similar builds?
It is best understood through its focus on tree, log and wood. Those traits drive the material list and layout described above, and are what set this farm build apart from a generic logs build.
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