On a small colonial farm, who most likely did the planting, caring for, and

harvesting of the crops?

colonial farmers did most or all the work and didn't use slaves until the early 1700s

the landowners

Explanation:

In ancient times there was a landowner who was the owner of the land and the one who managed the money, who took care of it and saw that it could be sown on his land according to the area, the money and the number of workers he would have, the landowners were almost always very rich people who came from other countries and abused the indigenous people of the countries where they went to answer.