deep

Shallow roots are roots that were shallow and grows horizontally, it conserves water during the rains. Deep roots were roots that grows deep into the ground to obtain water.

Some roots like in desert areas go very deep . It is so because the water is not available near the surface of earth. The level of water is very less . It is located very deep. That is why roots go deep in soil in search of wate .r

It means to have deep origins.

Longer handled shovels are better for digging out deep roots.