Question

name the medium in which plants grow

Answer 1

The material that your plants grows  in is called the “growing medium”.

Answer 2

The medium in which plants grow is called nutrient medium.
These nutrient medium is used in tissue culture laboratories.
These nutrient medium has the ingredients of soil.
One of the nutrient medium on which pollen tubes can be grown if pollen grains are dusted can  be made as follows.
Add sucrose with boric acid and potassium nitrate and manganous sulphate in distilled water.