The phrase "first planting" refers to the initial act of putting seeds or plants into the ground to start a new garden or crop. It marks the beginning of the growth process. Full definition
First planted in 1968, the region is now home to more than 40 wineries, from boutique to large - production, rustic to modern. (visittemeculavalley.com)
Do you think the very first plant actually got the entire process correct enough to continue it's existence? (religion.blogs.cnn.com)
In retrospect, I know this was the time when the seed of a realization was first planted in the soil of my creative mind; sometimes a writer should not write something. (tyunglebower.com)