How much space do saplings need in Minecraft?

ch
5

How much space does it take between 2 seedlings for trees to grow? If you put them too close to each other, they can't grow

Ya

3x3 blocks

Av

The seedlings need a distance of 4 blocks.

Th

But they can

Try it out in Kreativ with bone meal

an

0. Seedlings can be placed right next to each other, but they can still grow.

Dr

You only need space upwards (My stand: 1.8.8)