I am not sure, are you talking about daylillies? If so you can divide them anytime after they have finished flowering. I would suggest that you wait until it cools off mid to late September. Hope this helps.

No, they are tiger lilies. They are much larger than day lilies, and they are more single rather than the day lilies. They are very special to me, but they are once bloomers.

Thanks for responding.

Plain old tiger lilies aren't usually worth digging up (imo) and I don't really notice that they have issues with crowding, they grow on top of each other if necessary.

Certainly if you want to make a whole row, you can dig up, plant them singly and wait for them to bulk up (a few years)...but the easiest way to propagate tiger lilies is just plant the bulbils and forget trying to mess with the grown bulbs at uncertain depths.

October or November (after dormant) would be the appropriate time to dig in Tulsa.

My tiger lilies are beautiful. I must have purchased the bulbs from the right place because they grow with the larkspurs and make a magnificent display.

The lilies are almost my height (5'2) and are very showy. Even now the plants are pretty, but are terribly crowded. I have taken out some daylilies, and other plants that I am not that crazy about in preparation of working up the bed to transplant the bulbs.

My father was a gardener, and he used to be very proud of his tiger lilies, so as mine bloom, I have very fond memories of my father. I am sure this is why they may be more beautiful to me than to anyone else. Also, of my 95 rose bushes, none of them are orange, so bringing in the orange color makes them unique.

I will wait until Oct., and if any of you can think of other suggestions for the lilies, please let me know.

dbarron and stockergal, I really appreciate your input. As I amend the soil, I would love to know what to put in so that they will grow well -- and how to separate them so that at least a few will have a good bloom until the new ones get large enough.

Thanks,

Sammy