It's not a download post, but it's a very small tutorial on making a community gadren for your neighbourhood.
After you finish, any sim can visit it and harvest the best quality veggies without having any gardening experience.
You need to have a sim with at least Silver Badge in gardening. Make her/him buy a community lot (the one you want for your community garden). Send your sim to the lot and make him plant all kinds of veggies; as many as you want. Don't forget to buy the orchard trees. When everything is planted, use the cheat code boolprop testingcheatsenabled true. Click on every plant and tree and chose "make harvestable". It will make the plants be in thriving condition and ready to be harvested. Send your sim home and sell the lot. Now exit to the neighbourhood and enter the lot as any community lot. Decorate it.
Now, when your sims visit your garden, they can tend to it, spray it, harvest the produce. Afrer they leave, the harvested plants will magically respawn.