I see you're in zone 5. I would think that what I am seeing of your plants they are doing ok. I am in FL for the winters now but if I remember my zone 6 plants weren't much larger this time of year. By mid May you should see a huge improvement in the size and color of your plants. Being from Costco or any store that isn't totally into daylilies, the bare roots tend to be small. From what I understand you bought 5 roots(fans) and then separated them into 5 separate plantings? Or did you buy 5, 5 root(fan) plants? If you separated the 5 roots into separate plants and they all look like the one pictured above, bravo they are doing really well. I bought some single fans and a year & 1/2 later they might have added a fan. Yours look to have 5 to 7 fans so I think they should be fine.
Ps if you want to buy more plants buy from either a local daylily farm or onIine would stay away from the big online nurseries you get bigger and usually cheaper from the smaller daylily only places. Imho
Good luck
