Here's an update to the "How Do I Garden?" portion of the Gardening explanation. There's a few extra pictures to explain it all.
How do I Plant?
When you're ready to plant a seed in prepared soil or a planter, you must cast a seed planting spell. This places the chosen seed into the soil or planter, where it can begin to grow. To prepare an area for planting outdoors in your Castle, you must cast a soil preparation spell. Soil preparation spells cost Energy. To garden in your dorm room or an indoor space in your Castle, you must buy a planter from the gardening vendor. There are different sizes and types of plants, but some types of plants cannot be planted indoors.
Plants require attention to grow in the form of plant growing spells. All plants have needs that must be met, and plant growing spells fulfill those needs for a period of time. Plants needs include water, sunlight, pollination, music and magic. Plant growing spells cost Energy to cast, and are cast through the garden interface in your home.
Plants have likes & dislikes, conditions that can help them grow or hinder their development. A plant will grow faster if it is surrouned by things it likes, and it will grow slower if it is surrounded by things it dislikes. You can learn what a plant likes or dislikes by using the Inspect spell on it.
Plants go through several stages as they grow, from seed to seedling to young plant to mature plant to elder plant. Once a plant is mature, you can harvest it by interacting with it. A plant can be harvested repeatedly until it reaches the elder stage. Harvesting yields rewards such as reagents, pet snacks, gold, treasure cards or other seeds. When a plant reaches the elder stage, it can be harvested only one more time. This harvest will yield the greatest rewards. After this, the elder plant will disappear.
There you go! Have fun tending to your plants!