Parsley plant

This particular parsley plant has been around for months. Due to my putting a rotted food piece on the soil (to see if I could be rid of such things that way, rather than under), some white mould formed at the top of the soil, but not on this particular plant. At some point, I took the roots, layered the soil up to cover the mould, and then put them back in. I think its dying may possibly be due to that, or it may be a known natural death that parsley goes through. I planted some seedlings about a week ago for more parsley. Is this something that can grow indoors year-round?

Any help is appreciated.