Plants blooming in September (here)

Hansen D, 2006 52" 9" E Re Orange red blend above green throat Tet Ev-- 26 buds, 4 branches, (((Arctic Snow × unknown) × (Happy Apache × unknown)) × Hang Six)

Gossard J, 2012 44" 9.5" ML Re Black purple with a very dark black purple eyezone and green throat Tet Dor Fragrant, 42 buds, 7 branches, Unusual Form Cascade, ((Earth Shaker × Heavenly Thunderbird) × Webster's Purple Wonder)
Awards: JC 2012, HM 2015

Roberts N, 2002 30" 5" M Black red self above green throat Dip Sev Fragrant, 23 buds, 5 branches, Unusual Form Crispate,
Awards: AM 2010, HM 2006, L/W 2010
Not listed as reblooms but does every year for me.

Harry P, 2014 30" 6.75" EM Re Base color is rose peach, eye and edge is cranberry Tet Sev 26 buds, 4 branches, (Mary Alice × sdlg)

Zahler, 2014 24" 3.5" M Re Cerise red, velvety, recurved, sometimes with a white edge or midrib, and a green throat, rebloomed 6 times in each of the last 5 years Dip Sev 20 buds, 2 branches, (Explosive Climax × Little William)
Has a great rebloom

Maryott, 2014 34" 5.75" M Re Deep orange petals, bright yellow appliqué throat and broad red eye and edge. Tet Evr
15 buds, 2 branches, (Sense of Wonder × sdlg J1264A)

Selman, 2016 36" 5" EM Re Veined pumpkin orange with crimson red eye and matching ruffled picotee over yellow to green throat. Dormant, Tetraploid, 22 buds, 4 branches, (Dragon Pinata × (Foolish Dragon × Last Fool Standing))

Gossard, 2006 48" 3.5" M Bright golden orange self. Tet Dor Very Fragrant 25 buds, 5 branches, (Tet. Nutmeg Elf × Tet. Itsy Bitsy Spider)
Reblooms here in September. Covered with blooms

Bell-T., 2015 30" 5" EM Re Creamy peach with washed blue eye and edge with violet mascara edge and small double edge around petals Evr Tet Frag 20 buds, 4 branches (Cosmic Odyssey × unknown)

FR Smith, 2006 32" 5.5" EM Orange w/red eye and edge Tet Sev F-8
One of the first plants to bloom in the season and a great dependable rebloom

Salter, 2001 28" 6.5" EM Re Creamy white w/hint of pink w/ruffled gold edge, small lime green throat Tet Sev E-17

Trimmer, 2008 28" 6" EE Re Dark pink with dark red eye above green throat. Evergreen, Tetraploid, 22 buds, 2 branches, ((Calling All Angels × Jane Trimmer) × Tet. Peppermint Delight)
Awards: HM 2012

Petit, 2005 26" 4.5" M Re Cream peach with blue violet eye & wire gold edge above green throat Tet Sev E-7
Plant is covered with blooms in Mid September

Bell, 2013 30" 5.5" M Re Pink with purple eye and picotee ending in gold edge Tet Evr Fragrant, 20 buds, 4 branches, . (Over the Mountain × unknown) H-6B

Joiner 1988 30" 6.5" M Re Orange Dip Sev

Salter, 2008 28" 6" M Re Plum with white toothy edge green throat Tet Sev E-14

"Waldrop, 2009 31"" 6"" EM Re Strawberry with diamond red eye and yellow edge above green throat. Semi-Evergreen, Tetraploid, 18 buds, 5 branches, ((Cherry Valentine × Crazy Ivan) × Cane Creek Falls)
Awards: HM 2015"

Patton 2007, 26" 7.5" EM Re Light pink with darker pink eye and ruffled edge above gold to green throat. Tet Sev Fragrant, 23 buds, 4 branches, (Cherries and Cream × Mal)

Rood K, 2011 29" 3.75" Mla Cream with salmon pink halo above a yellow throa Semi-Evergreen, Diploid, Fragrant, 4 branches, Double 100%, t. (Siloam Double Frost × (Judy's Penthouse Double × Imagine Me))

Watts, 1998 28" 6" E Re Deep gold self with gold throat Tet Ev G-5
Rebloomed in August and again in September. A great gold bloom.

Fowler-B., 2017 28" 6.5" EM Re Ghost white with green throat, blue violet eye, ruffled edge of blue violet laced in cream. Sev Tet, 20 buds, 4 branches, (Blue Reality × Me So Happy)

Scott B, 2012 34" 5.5" ML Re Lemon yellow with white midribs and green throat 85% dbl Tet Dor 15 buds, 3 branches, Unusual Form Crispate-Spatulate, Double 85%

Bell-T., 2017 32" 6" M Re Watermelon pink with big cream yellow watermark and yellow ruffled edge. Evr Tet Very Fragrant, 26 buds, 3 branches, (Transcendent Love × Linda Bell)

Stamile, 1999 30" 6" EE Re Pale Orange w/Etched Purple Eye & Edge Tet Ev B-32