Shell, sunflowers and coleus are an annuals . . . now, it might be warm enough in your zone that they'll grow all winter; but, once they bloom, they're done. Some morning glories are annuals, some are not. The annual ones will do just like the sunflowers; the pernnial ones aren't going to be happy with the light levels in an house. The fruit seeds should be OK if you can give the plants lots of sun . . . however, you need to be aware that the seed of a fruit will not necessarily -- indeed, usually does not
-- match the parent. In addition, many citrus have sterile seeds. Finally, fruit trees can take up to ten years to become productive when grown from seed.
Typically, I recommend that, unless you have a true greenhouse, you not try to get into the project of moving plants in and out of the house. Most plants that do well outdoors don't do well in an house . . . it's too dry and dark.
If you want to plant seeds for the following year, the two schema normally followed are to:
- Plant out perennial [and very cold hardy annual] seed in the fall or late winter. It will start growing as soon as conditions are OK in the spring.
- Start annual seed in flats 6-12 weeks before you plan on planting it out. This generally requires a dedicated growing-space with appropriate lighting, heat, and air circulation.
Chris Owens