That's an aweful big clump. I say they need divided. Do this on a cool cloudy day, use a sharp knife or pruning saw (they have large thick roots). Then water well, add a little fertilizer to the mix and next year you'll have beautiful flowering Daylilies.

Jen

Question - this is one of three clumps of Stellas. I really only still have room for three clumps. Do I divide and then just toss the other half?

Does not dividing them explain the poor performance and dying leaves?

You might want to post your question on the Daylily forum. You will probably get more numerous responses.

Lainey