I bought several Tango Lilies this year. They are much prettier than on pictures, but they did not bloom from June to September of course. There is no such Lily in this world. Tangos did hold their blooms for a long time - for 3-4 weeks.
I can guess where you saw this description. Do not buy from this seller.

If you want a long blooming lily, give White Butterflies a try. The first blooms were opening June 8th and it looks as though the last one will go tomorrow. It took it the first year to settle in, 2nd year bloomed nearly a month. This year is it's third year in my garden.

Hi,
Thanks alina 1 for the info about the Tango lilies. I didn't think they would bloom that long either. I saw this in Vessey's catalog is this the company you mean?

Hostaholic2 I will lookup the White Butterflies.

Thanks
Mary-Jane