1924, May, Royal Horticultural Society Chelsea; Silver Medal for Primulas (54mm diameter), cased.
1924, May, Royal Horticultural Society Chelsea; Silver Flora Medal for Primulas Certificate (156 x 227mm) awarded to Dr MacWatt.
1925, May, Royal Horticultural Society Chelsea; Silver Gilt Medal for Primulas (54mm diameter), cased.
1925, May, Royal Horticultural Society Chelsea; Silver Gilt Flora Medal Certificate for Primulas (158 x 227mm) awarded to Dr J McWatt.
1928, May, Royal Horticultural Society Chelsea; Chelsea Silver Gilt Flora Medal Certificate for ‘a group of Primulas’ (158 x 228mm) awarded to Dr John MacWatt.
1928, May, Royal Horticultural Society Floral Committee B recommendation (127 x 177mm) for an Award of Merit as a hardy flowering plant for Primula heucherifolia awarded to Dr MacWatt.