Non ritual creo spells can accelerate growth to maturity, but the major limit in magical force farming is that seeds cannot be created with creo unless done ritually. What I am wondering is if a ReHe spell can be used to pollinate plants, or a ReAn to bring about conception of a foal/cub/animal baby by bring together the necessary components from the parent plants or animals?
ReHe to pollinate in ME probably has a lot to do with when folks learned to hand-pollinate. I know a while ago I found out tree and plant grafts were definitely older technology than I had assumed so I wouldn't be surprised if this was something some folks knew back then.
With Animal Rego could likely be be used to induce heat or estrus in a female animal. I think this might fall under change their state in the same manner Rego is used to put an animal to sleep.
Could you elaborate on the seeds thing?
I don't recall where it is, but essentially to cause a tree to reproduce, or produce seeds, would be to create a new plant as opposed to just bringing it to maturity. On the other hand the process by which plants and animals (and people) generate offspring is a fairly routine procedure that should be able to be influenced by rego...
if the process is understood. In principal it might require a ReAn (bees) to polinate plants instead of ReHe... or just might require two plants brought to maturity in the same area...
I have found that 1750 is when it was first realized what role bees play in pollination (so plant reproduction through ReAn is out). Rudolf Jakob Camerarius- the scientist who discovered the process of pollination, was born in 1665, leaving the question of where medieval people of the 13th century believed seeds came from if not a process of natural maturation.
Though the fact that semen was referenced to as a man's "seed" suggests a belief in a much more directly organic form of reproduction in which planting a seed in the ground was equivalent to planting a man's seed in a woman- by which theory any plant should be able to be made to produce seeds naturally.