- nourishment, as fertilizer or chemicals, for plants.
Origin of plant food
First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for plant food
The source of plant-food could only be the atmosphere or the soil.Manures and the principles of manuring
Charles Morton Aikman
They added no plant-food, and they took away only a fraction that was not large.
It excludes the air, sealing up the plant-food so that crops cannot be secured.
If yields are limited by absence of plant-food, fertilizers must be used.
Plant-food is needed, and should be mixed with the soil when the seeding is made.