Getting rid of aphids is no easy task. Large masses of them seem to appear overnight and without quick treatment, they can overwhelm and kill a plant. Look at a few organic control of aphids in this article.
A great way to start seedlings is by putting them in an empty lemon rind. It may sound a bit weird, but the nutrients from the lemon rind will seep into the soil and help the seeds grow better, stronger, and faster!