How do you plant crops in minecraft pe?

Answer 1

You don't "make" crops in minecraft, you find the resource and then you plant.

Melon Seeds-Find in Abandoned Mine chest's.

Seeds-Can be dropped when breaking tall grass

Pumpkin Seeds- You can craft them from a pumpkin. Can find in Abandoned Mine chest's or when you find the pumpkin patches randomly spawned in the world.

Sugar Cane-Can only plant on non-tilled grass/sand that is next to water, can find next to water in almost any biome.

All seeds need tilled ground (can till with a hoe), and the tilled ground has to be within 4 blocks of water.

Answer 2

make a hoe. then use the hoe on dirt. then plant seeds on the block that you used the hoe on, and wait until the plant grows.