I just found a bag of lilies that I'd bought in the spring - I forgot all about them. I know, bad, right?? just wondering if there was any way to overwinter until spring. any suggestion are appreciated.
If these are true lilies, such as Asiatic lilies or oriental lilies, they are winter hardy so you can go ahead and plant them. If they are tender lilies such as calla lilies or canna lilies, neither of which are true lilies, they can be overwintered as if they were dug up. Here is more:
https://www.gardeningknowhow.com/ornamental/bulbs/lily/how-to-grow-lilies.htm
https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/calla-lily-winter-care.htm
https://www.gardeningknowhow.com/ornamental/bulbs/canna/storing-canna-bulbs.htm
The plant has produced over 40 healthy off spring. she is still producing but non of her off spring have reproduced at all??
This isn't too common, considering that the offspring from bulb are identical to the parent. If these were from seed, then you can expect many of them to be quite different in flowering than the original parent.
I would check a few things:
Make sure that the pH and nutrient levels are within range of about 6 to 7.5, and make sure that the phosphorus levels are somewhat high for flowering. Too much nitrogen can cause flowering issues.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm