hydroponics
Method of growing plants in the absence of soil and using a nutrient solution. The plants may be rooted directly into the solution or in an inert medium such as rockwool or gravel.
Ichthyological terms, not general ones.
Method of growing plants in the absence of soil and using a nutrient solution. The plants may be rooted directly into the solution or in an inert medium such as rockwool or gravel.