garden planting; planting in a garden
Refers to the act of planting something in a garden, or the state of being planted in a garden. Often used in contrast to potted or indoor planting.
この花は庭植えに向いています。
This flower is suitable for garden planting.
庭植えの木が大きくなりすぎた。
The tree planted in the garden has grown too big.
Compound of 庭 (にわ, 'garden') and 植え (うえ, 'planting'), the nominalized form of 植える (うえる, 'to plant').