When i bought a new house (Red Barn) i started planting seeds on it. And i already neglected the plants that i planted on my other house. I wanted to tend to these plants again -- I need them to be transferred to my Red Barn so that gardening them will cost less energy.
I suggest there should be a way to relocate plant (either living or dead ones), please.
I would offer 2 spells. Transplant and Renewal. Transplant would cost 30 energy and allow you to retain the plant's progress and replant in another location. Renewal would cost 4 energy and would return the plant to a seed in your pack. Though I would say they should only be able to be used on live, healthy plants.
I believe if you use the hoe icon to "plow" a live plant, you should be able to return the "bulb" or seed back to your pack. Transplanting live plants would be nice as well.
This is the same problem that happened to me, only the plants were stuck at my dorm, not out an old house, and I wanted to move them to the first castle that was 8000 coins. I like your idea and I hope KI adds it.
I like the idea of Transplant. 30 Energy is not bad. That means the ground as well as the plant can be relocated to the desired place
Repot - cost 25 Energy. Transfer the plant from ground to a pot. I would also suggest if it planted in a pot, the pot could be relocated just like the mannequin.