Abstract

Axillary budbreak of Ilex Crenata Thunb. ‘Helleri’ and ‘Ilex vomitoria’ Ait. ‘Stoke's Dwarf’ hollies was promoted by a single BA (N-(phenylmethyl)-1H-purin-6-amine) application of 125–1000 ppm compared to an unpruned control. Budbreak of Photinia × Fraseri Dress was stimulated by 500–2500 ppm BA and 2000–5000 ppm Promalin (BA + GA₄₊₇). Budbreak in Nandina domestica Thunb. ‘Harbour Dwarf’ increased with 1000–2500 ppm BA and 2000–5000 ppm Promalin application. Budbreak of Rhododendron × ‘Formosa’ azalea was promoted by 2000 and 2500 ppm BA and 2000–5000 ppm Promalin. Axillary budbreak of Ternstroemia gymnanthera (Wight & Arn.) T. Sprague) and Raphiolepis indica (L.) Lindl. was not affected by BA or Promalin application.