Answer: Blooms that last two weeks is actually doing quite well. Lilies usually put on their show and then you have foliage. With some lilies, but not all, you can coax a second wave of bloom by pinching off the dead bloom and not allowing a seed pod to form. You report that the foliage is still glossy green, so it sounds to me like the lilies are doing fine. I know it's a disappointment when they stop blooming, gardening is a bittersweet hobby indeed.
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