The captive/cultivated guidelines encompass this situation fairly well:
https://www.inaturalist.org/pages/help#captive
Cultivated:
- poppy in a garden
- tree planted 1, 10, or 100 years ago by humans
- plants that grew from seeds that were planted in the ground or scattered
Wild:
- weed or other unintended plant growing in a garden
- garden plant that is reproducing on its own and spreading outside of the intended gardening area
- a species that had been introduced to a new region and has established a population outside of human care