The North Canterbury Black and Coloured Sheep Breeders Association will hold its 22nd annual sale that day.
While membership has shrunk over the years, there would still be 200 fleeces, from five members for sale.
Stalwarts Shirley Peddie, from Waikari, and Janice Winter, from Kaiapoi, said crowds flocked to buy fleeces to spin, card and knit.
"We breed for the spinning side of the wool. There are amazing colours for sale," Mrs Peddie said.
"We are really very, very fussy, with our wool."
Mrs Peddie would have about 70 Corriedale and Romney fleeces for sale.
Her flock was the result of decades of breeding, as she had taken it over from her mother.
Mrs Winter bought her first black sheep at Addington as a young girl, and said she attracted many sideways glances.
Her appetite was whetted and continues today.
