Johnston Orchids
| AOC no. | Date | Award | Plant |
| 3030 | 18.Sep.2002 | HCC/AOC 2002 (SA) | Phal. Johnston's Quest 'Houghton' |
| 2812 | 29.Jul.2001 | ACC/AOC 2001 (SA) | Arpophyllum spicatum 'Houghton' |
| 2443 | 02.Sep.1999 | HCC/AOC 1999 (SA) | Phal. Double Delight 'Houghton' |
| 2349 | 12.Apr.1999 | HCC/AOC 1999 (SA) | Rntda. Lily Aow 'Dream City' |
| 2323 | 14.Dec.1998 | HCC/AOC 1998 (SA) | Phal. Johnston's Treasure 'Houghton' |
| 2322 | 14.Dec.1998 | AM/AOC 1998 (SA) | Phal. Nantai 'Houghton' |
| 1927 | 14.Jul.1996 | HCC/AOC 1996 (SA) | Phal. Johnston's Pride 'Gosford Gold' |
| 1839 | 26.May.1996 | AM/AOC 1996 (SA) | Phal. Winter River 'Houghton' |
| 1789 | 16.Jul.1995 | HCC/AOC 1995 (SA) | Paph. Johnston's Red 'Houghton' |
| 1732 | 31.Aug.1995 | HCC/AOC 1995 (SA) | Phal. Dawn Hunter 'Houghton' |
| 1731 | 31.Aug.1995 | HCC/AOC 1995 (SA) | Phal. Scheewittchen 'Stan Johnston' |
| 1576 | 15.Aug.1994 | HCC/AOC 1994 (SA) | Phal. Tarryn Drinnan 'Paracombe' |
| 1575 | 15.Aug.1994 | HCC/AOC 1994 (SA) | Phal. Sweet Music 'Houghton' |
| 1477 | 02.Dec.1993 | HCC/AOC 1993 (SA) | Ctsm. Orchidglade 'Houghton' |
| 1416 | 02.Sep.1993 | HCC/AOC 1993 (SA) | Phal. Tarryn Drinnan 'Houghton' |
| 1392 | 02.Sep.1993 | HCC/AOC 1993 (SA) | Phal. Ginrei 'Houghton' |
| 1390 | 02.Sep.1993 | HCC/AOC 1993 (SA) | Phal. Dawn Hunter 'Highercombe' |
| 1347 | 21.Jul.1993 | HCC/AOC 1993 (SA) | Paph. Jolly Meadows 'Highercombe' |
| 1346 | 21.Jul.1993 | HCC/AOC 1993 (SA) | Paph. Jolly Meadows 'Houghton' |
| 1296 | 04.Mar.1993 | HCC/AOC 1993 (SA) | Phal. Modern Beauty 'Houghton' |
| 1221 | 05.Nov.1992 | HCC/AOC 1992 (SA) | Mps. Firewater 'Summer Sizzle' |
| 1219 | 01.Oct.1992 | AM/AOC 1992 (SA) | Phal. Yukimai 'Houghton' |
| 1200 | 03.Sep.1992 | HCC/AOC 1992 (SA) | Phal. Brazilian Glow 'Eureka' |
| 1199 | 03.Sep.1992 | HCC/AOC 1992 (SA) | Psychopsis papilio 'Houghton' |
| 1068 | 03.Apr.1992 | AM/AOC 1992 (SA) | Phal. Hermosa 'Highbury' |
| 1038 | 03.Oct.1991 | HCC/AOC 1991 (SA) | Paph. Olenus 'Houghton' |
| 1019 | 06.Jun.1991 | HCC/AOC 1991 (SA) | Paph. Dynamic Red 'Houghton' |
| 1018 | 10.May.1991 | AD/AOC 1991 (SA) | Rhnps. Suree 'Sees' |
| 1017 | 10.May.1991 | AM/AOC 1991 (SA) | Rhnps. Suree 'Sees' |
| 992 | 15.Apr.1991 | AD/AOC 1991 (SA) | Den. Kristen Debut 'Houghton' |
| 991 | 15.Apr.1991 | HCC/AOC 1991 (SA) | Den. Kristen Debut 'Houghton' |
| 907 | 03.Nov.1988 | HCC/AOC 1988 (SA) | Phal. Golden Gift 'Houghton' |
| 906 | 10.Jul.1987 | AD/AOC 1987 (SA) | Lyc. Sunset 'Houghton' |
| 901 | 13.Jul.1990 | HCC/AOC 1990 (SA) | Paph. Maud Read 'Houghton' |
| 898 | 30.Aug.1990 | HCC/AOC 1990 (SA) | Lycaste virginalis 'Houghton' |
| 813 | 07.Dec.1989 | HCC/AOC 1989 (SA) | Phal. Golden Amboin 'Yellow Ball' |
| 812 | 07.Dec.1989 | HCC/AOC 1989 (SA) | Phal. Golden Gift 'Inglewood' |
| 810 | 02.Nov.1989 | HCC/AOC 1989 (SA) | Phal. Golden Gift 'Paracombe' |
| 796 | 14.Jul.1989 | HCC/AOC 1989 (SA) | Paph. Carmelite Abenoja 'Houghton' |
| 794 | 14.Apr.1989 | HCC/AOC 1989 (SA) | Rlc. Memoria Crispin Rosales 'Ruen Yuen' |
| 792 | 02.Feb.1989 | AM/AOC 1989 (SA) | Paph. Susan Booth 'Highercombe' |
| 749 | 03.Nov.1988 | HCC/AOC 1988 (SA) | Phal. Naoko Moriyama 'Le Hua' |
| 747 | 08.Jul.1988 | AD/AOC 1988 (SA) | Phal. Lippegruss 'Houghton' |
| 721 | 06.Oct.1988 | HCC/AOC 1988 (SA) | Phal. Golden Amboin 'Canary' |
| 720 | 04.Sep.1988 | HCC/AOC 1988 (SA) | Phal. Golden Emperor 'Sweet' |
| 718 | 25.Aug.1988 | HCC/AOC 1988 (SA) | Phal. Orchid World 'Houghton' |
| 717 | 25.Aug.1988 | HCC/AOC 1988 (SA) | Onc. Marperry 'Houghton' |
| 711 | 04.Aug.1988 | HCC/AOC 1988 (SA) | Phal. Little Mary 'Houghton' |
| 652 | 05.Feb.1987 | HCC/AOC 1987 (SA) | Paph. Millmanii 'Houghton' |
| 639 | 05.Mar.1987 | HCC/AOC 1987 (SA) | Ctna. Red Face 'Maili' |
| 589 | 14.Oct.1986 | AD/AOC 1986 (SA) | Rth. Laurie Tsuda 'Houghton' |
| 549 | 12.Jul.1985 | AD/AOC 1985 (SA) | Phal. Pretty Nice 'Houghton' |
| 478 | 15.Jul.1983 | HCC/AOC 1983 (SA) | Paph. Via Paracombe 'Houghton' |
| 477 | 07.Jul.1983 | HCC/AOC 1983 (SA) | Paph. Via Houghton 'Houghton' |
| 391 | 06.May.1982 | HCC/AOC 1982 (SA) | Phal. Zauberrose 'Highercombe' |
| 363 | 17.Aug.1981 | AD/AOC 1981 (SA) | Phal. Abram McAndless 'Highercombe' |
| 343 | 18.Aug.1980 | HCC/AOC 1980 (SA) | Cym. Cracker Jack 'Highercombe' |
| 336 | 02.Oct.1980 | AD/AOC 1980 (SA) | Cym. Cracker Jack 'Brown Velvet' |
| 276 | 03.May.1979 | HCC/AOC 1978 (SA) | Phal. Hermosa 'Highbury' |
| 240 | 04.May.1978 | AD/AOC 1978 (SA) | Phal. Percy Porter 'Highbury' |