‘Yellow Whoppers’ () One visitor to our field pointed to this lily from a distance and said, “That’s the lily I want!” Upon closer inspection, she was just as convinced. You can’t go wrong with this lily, a fabulously strong tetraploid plant with lush foliage and large, vivid yellow blooms.
4 feet, June.

‘Last Dance' () carries its nodding lemon-yellow flowers on long, arching pedicels, and will remain in flower for weeks.  Bred from L. maximowiczii, ‘Last Dance’ is late-flowering, heat tolerant, and a super season extender! 
3 to 5 feet, early to mid July.
Limited supply, available for fall delivery only.

‘Sundrenched’ ()) has big, saturated golden yellow flowers with a sizzling red ray shining down each petal.  The petal tips and buds are sunkissed red, too.  The flowers are numerous on tall, glossy ebony stems.  Long-blooming! 
4 to 5 feet, June. 

Asiatic Lilies, yellow -- page 1, page 2