Usage patterns
〈物〉に水をやるto water (a plant)
I water the garden plants every morning.
〈物〉の手入れをするto take care of / tend (a plant)
My father tends the garden plants on his days off.
〈物〉を剪定するto prune/trim (a plant)
The gardener is pruning the garden trees.
〈物〉を育てるto grow/raise (a plant)
I'm growing potted plants on my balcony.