Red Spider Orchid

[starsnrockets81]

Hello everyone,

This is my first post so please be gentle

I received a Red Spider Orchid in mid June of this year. The picture I've attached isn't mine, but it looks EXACTLY like mine.

I don't have much knowledge of how to care for this plant but I've been watering it once a week and letting that water drain so the plant doesn't sit in water. I keep it sitting near an east-facing window that gets some good sun, I live near Boston, MA though so it doesn't get too hot here year round. When I received the plant, it had several full blooms and a few stems of unopened flowers; the stems have since all opened and dried up. I snipped the dried up stems as far down as I could. I've also noticed the plant, which is currently potted in a green plastic pot (about 4-5" across) that sits inside a ceramic planter, is very rootbound. Some of the roots are coming out of the holes in the bottom of the pot.

So, my questions - should I repot this plant? If so, what should I plant it in? Should I be fertilizing this orchid as well? Any other care I should be giving it or anything I'm doing wrong? What can I do to encourage new blooms? I've read a lot of orchid care tips, but a lot of them are conflicting. Thank you!