You can make a Simple Flower Farm anywhere in the playing area. Use the bushes of any flower in the dispenser and then plant the flowers to make a Simple Flower Farm. This guide will explain to you the method to set a Simple Flower Farm.
The first thing you will have to do is to make a redstone clock by using redstone repeaters and dust.
Add a lever and dispenser on the ground and connect them with a redstone clock by using redstone dust.
Place rose bushes in front of the dispenser and add bone meal in the dispenser. This will make duplicate flowers.
Now you can use these flowers to plant in the field. Pick up and plant all the flowers to make a simple and easy flower farm.