We have a number of plants out for sale around our inworld shop, including Blackeye Susans, Daisies, and Grass.
Each are 1 prim and Copy/Mod and large in size.
There are also a couple Grape Vines. 4 prims and flexi they look like they are spreading out trying to catch something to climb on.
For the green thumb we have a Greenhouse. Built using a number of sculpties with old wooden planks and stretched green shade cloth.
23 or24 prims and comes with or without the dirt ground. Available at both our inworld shop and the SL Marketplace.