California Chapter 1966 Rhododendron Show
- For exhibitor receiving the most points, Perpetual Sweepstakes Cup, Mr. and Mrs. Maurice Sumner.
- For the best rhododendron hybrid truss (except pink), John Druecker Perpetual Cup, 'David', Mr. Allan C. Korth.
- For the best evergreen azalea specimen plant, The Cora Brandt Perpetual Silver Cup, 'George Lindley Taber', Mrs. Harriet Whittington.
- For the best complete truss with at least one whorl of leaves and with both parents in the Maddenii Series, Paul and Ruby Bowman Perpetual Cup, 'Lind-dal', Mr. and Mrs. Maurice Sumner.
- For the best pink rhododendron truss, Justin F. Green Perpetual Silver Cup, 'Pink Pearl', Mr. William Nolan.
- For the best rhododendron plant, California Chapter Trophy, 'Gertrud Schale F2', Mr. and Mrs. Maurice Sumner.
- For the best new rhododendron plant hybridized by the exhibitor and grown in California, Bronze Trophy, 'Lind-dal', Mr. and Mrs. Maurice Sumner.
- For the best species truss in the Maddenii Series, Ed Long Perpetual Cup, R. lindleyi , Dr. J. P. Evans.
- For the best rhododendron foliage plant, any size, with or without bloom, William I. Massey Memorial Trophy, R. falconeri , Mr. and Mrs. Maurice Sumner.
| First Prize Winners | |||
| NAME | EXHIBITOR | NAME | EXHIBITOR |
| R. davidsonianum | Mr. & Mrs. Maurice Sumner | 'Gertrud Schale' | Mr. & Mrs. Maurice Sumner |
| R. lindleyi | Dr. J. P. Evans | 'Royal Flush', pink form | Mrs. Harriet Whittington |
| R. yakushimanum | Mr. and Mrs. E. H. Long | R. falconeri | Mr. & Mrs. Maurice Sumner |
| R. aberconwayi | Mr. & Mrs. Maurice Sumner | R. canescens | Mr. Tom Russ |
| R. burmanicum | Mr. & Mrs. Maurice Sumner | 'Ward's Ruby' | Mr. Tom Russ |
| 'Martha Wright' | Mr. & Mrs. Maurice Sumner | 'Fielder's White' | Mrs. R. Homans |
| 'Lind-dal' | Mr. & Mrs. Maurice Sumner | 'Perle De Sweynarde' | Mr. Tom Russ |
| Royal Flush Spray | Mr. & Mrs. Maurice Sumner | 'Mucronatum Rosea' | Mrs. Harriet Whittington |
| 'Unknown Warrior' | Mr. and Mrs. E. H. Long | 'George Lindley Taber' | Mrs. Harriet Whittington |
| 'David' | Mr.Allan Korth | Red Evergreen A. Spray | Mr. Owen Pearce |
| 'Loderi King George' | Dr. J. P. Evans | 'Gardenia White' A. | Mr. Tom Russ |
| 'Mrs. A. T. DeLaMare' | Dr. J. P. Evans | 'Twenty Grand' A. | Mr. & Mrs. Maurice Sumner |
| 'Sappho' | Mr. Tom Russ | 'Paul Schaame' A. | Mr. Owen Pearce |
| 'Pink Pearl' | Mr. Bill Nolan | Mollis A. | Mr. Tom Russ |
| 'Cary Ann' | Mr. Bill Nolan | Mollis A. | Mr. Tom Russ |
| 'Mrs. G. W. Leak' | Mr. Bill Nolan | 'My Dream' A | Mr. and Mrs. E. H. Long |
| 'Van Nes Sensation' | Dr. J. P. Evans |
'Countess of Sefton' X
R. burmanicum |
Mr. & Mrs. Maurice Sumner |
| 'Unique' | Mr. Tom Russ | ||
| 'Glory of Littleworth' | Mr. Tom Russ | 'Lind-dal' | Mr. & Mrs. Maurice Summer |
| 'CIS' | Dr. J. P. Evans | 'Purity' A | Mrs. Harriet Whittington |
| Special Award, U. C. Botanical Garden | Leaves | Mr. and Mrs. E. H. Long | |
| Special Award, Golden Gate Park | Special Award, Howard Kerrigan | ||
Judges, Mr. P. H. Brydon, Mr. John S. Druecker, Dr. Fred Coe.
Clerks, Mrs. John J. Whittington, Mrs. E. H. Long, Mrs. J. P. Evans, Mrs. M. F. Ashley Giauque.
Show Chairmen, Mr. F. Owen Pearce, Mr. Roy L. Hudson.