Make simple tips through the principle that 

the color of the cloth becomes darker by absorbing water.

Cotton： Cotton material absorbs water very well. Some make automatic hydrating systems out of cotton thread.

Plastic： Simple shell, cheap.

There are two standards for the distance between the two marks: 2.5cm and 5cm. Users don’t need to measure the distance themselves. They just need to make sure the top white mark near the surface of the soil.

LOWER COST

SIMPLE TO USE

IMPROVE USER PLANTING EXPERIENCE