plant food

nourishment, as fertilizer or chemicals, for plants.

Origin of plant food

First recorded in 1865–70

The acid phosphate on the market is rock-phosphate treated with sulphuric acid to render its plant-food available.

Crops and Methods for Soil Improvement |Alva Agee
The organic sources of fertility, such as slaughter-house refuse, are containers of plant-food as surely as is stable manure.

Crops and Methods for Soil Improvement |Alva Agee
But let that soil be water-soaked, and have the proper bacteria at work, and the material is in plant-food form.

The Library of Work and Play: Gardening and Farming. |Ellen Eddy Shaw
The buyer of a ton of dried blood thus gets about 260 pounds of plant-food.

Crops and Methods for Soil Improvement |Alva Agee

It excludes the air, sealing up the plant-food so that crops cannot be secured.

Crops and Methods for Soil Improvement |Alva Agee