Around 20 years ago ( yes, that's correct) I planted hundreds of daffodils and tulips in between clumps of daylilies. Over the years, I've lifted and divided thousands of daffodils, replanted some and given hundreds away, and in recent years, have tossed hundreds - make that thousands, of bulbs. I also planted some Orienpet and Oriental lily bulbs amidst the daylilies. In retrospect, if I could start over, I would still plant daffodils and tulips and lilies, but would NOT put them in between the clumps of daylilies. There's the problem of always hitting the bulbs when you are dividing the daylily clumps and the lily clumps get SO big so quickly. ALL of the bulbs can overtake your daylily clumps in a few years if you're not careful. Over time, I have moved a large number of the Orienpet and Oriental lily bulbs to the rear of the garden but some still remain and they needed moving this past fall ( didn't get it done) and will definitely have to be lifted this fall. Many of the tulips have died out over time. Each year, I try to lift the large clumps of daffodils after they have bloomed. I let them dry and cure in a shady spot, and replant a few of them in the fall. I don't put them back between the daylily clumps but where I can find a spot behind the clumps. I love to see the bulbs in the spring but would do it differently if starting over. The biggest problem I found is that daylily clumps can be left alone for five or six years or some slow growing clumps even longer, but you MUST divide bulbs more frequently or they will multiply rapidly to the point of declining bloom or becoming "grassy" with too much foliage. Good luck!
