Foreword to No. 24

The range of topics covered by papers published in volume no. 24 demonstrates the significance of botanic garden horticultural knowledge, research and facilities for conservation and understanding the world of plants. There is a theme of conservation horticulture running loosely through many of the papers. The prevalence of this theme, which was not an intentional editorial decision at the outset of the volume compilation, illustrates the prominence that the term ‘conservation horticulture’ has rightly gained in our botanic garden community.