This started off as a personal compilation of information from online gardening guides. Lots of credit goes to those guide creators for making this project possible for me, and I have linked them specifically in the "Credits" tab of this airtable! I always wanted an easier way to filter types of plants when looking things up, so I began by organizing info in airtable, adding in tags and categories as I went. I then planted and researched every plant in the game to double-check what I already had, update info that needed it, and add things that were missing. I also then went ahead and added a ton of extra info such as tags for crafting, size, location, etc.
As of 8/19/21 this has every gardening plant for every pack up through Cottage Living. That means everything that shows up in the gardening category on the game's collections page (plus the new oversized crops). If I somehow missed anything or made any mistakes please let me know so that I can correct it! I plan on keeping this list updated as long as I am still playing the game.
I tend to get a little caught up with planning/tracking things in games, so I ended up creating an airtable for all the plants in TS4 with a ton of categories, tags, and bonus information.
With airtable's many functions, this database can be filtered, sorted, or grouped in any way you like, which makes it very convenient for planning your gardens. Need winter plants that can grow in a vertical planter and are used for crafting magical potions? You can filter for that. There are tons of possibilities. :)