I read on a Summerset review that ESO is bringing gardening to the game? Is this true?
link the review.
Unless they are quoting someone from Zos I would suggest it is questionable. The forums would be alive with speculation on what it actually means though I expect it would seem very unlikely to be related to alchemy.
https://www.mmorpg.com/elder-scrolls-online/columns/summerset-review-in-progress-1000012745
The reviewer seems to think its a thing. First I have ever heard of it.