posted by anonymouse .
how can i do an experiment involving plants if it is winter
Use indoor (house) plants.
Try some of the following links for ideas:
can you name some indoor plants please
do they all grow fairly qiuckly(so they can be used for experiments)
Philodendron grows most quickly. However, I've never started any of these from seed.
If you need to start plants from seeds, almost any seeds will sprout inside, and grow for a couple of weeks or more.