You have the right idea, Emily. You could plant them now and hope for the best. A few per pot, then eliminating weak ones is a good idea…but north and east are not the best Sun sides. As winter comes on, there will be less sunlight and less heat on the pot/plants. As for their needing a lot of room, some sunflowers do, yes—they can grow to a couple of meters in height! Or they can be knee high. The seed package should describe the plants at maturity. It’s also possible that you could save the seeds—or, say, half of them—and plant them next spring. If they are for this growing season, they may be fine a few months from now. Most seeds will last a year or so later than the package date. Put them in a cool, dry place and start them when danger of frost is passed. Start them indoors and transplant them outdoors, if you have space in the sun.
You have the right idea, Emily. You could plant them now and hope for the best. A few per pot, then eliminating weak ones is a good idea…but north and east are not the best Sun sides. As winter comes on, there will be less sunlight and less heat on the pot/plants. As for their needing a lot of room, some sunflowers do, yes—they can grow to a couple of meters in height! Or they can be knee high. The seed package should describe the plants at maturity. It’s also possible that you could save the seeds—or, say, half of them—and plant them next spring. If they are for this growing season, they may be fine a few months from now. Most seeds will last a year or so later than the package date. Put them in a cool, dry place and start them when danger of frost is passed. Start them indoors and transplant them outdoors, if you have space in the sun.