Four Australian apple (Malus domesticaBorkh.) cultivars that have orchard resistance to black spot,Venturia inaequalis,were investigated for their usefulness as sources of resistance in apple breeding. Test crosses showed that the cultivars ‘Geeveston Fanny’, ‘Tasman's Pride’, ‘Democrat’, and ‘Redbow’ all carried quantitative resistance genes. Unfortunately, because the resistance was inherited by only a small proportion of their progeny these cultivars are not useful sources of black spot resistance in apple breeding. These cultivars have been superseded by modern, higher quality cultivars.