As much as it is important to put a proper soil, there are more dangers coming from locust and weather, furthermore if its on large scale where you cannot oversee every plant growth.
The good thing is, she doesn’t have world altering magic like other isekais
Thing to be wary of is, she has some powerful connection and friendship which is some kind of magic.
As much as it is important to put a proper soil, there are more dangers coming from locust and weather, furthermore if its on large scale where you cannot oversee every plant growth.
In most climates locust are more of a seasonal threat or not at all. If you are talking pests, rodents, feral hogs, grubs, and slugs are more of a threat then locusts. Same is true for irrigation unless you have an adequate rain during the growing season.