2023 The Royal Horticultural Society Desk Calendar. This spectacular desk calendar features beautiful illustrative images selected from the RHS Lindley Collections, the world’s finest collection of botanical art. Product Dimensions: 160 X175 MM Official Royal Horticultural Society Product Plastic Free Danilo is the leading publisher of officially licensed calendars, diaries, greeting cards, gift wrap and gift bags in the UK. We are a family run company that’s been operating for more than 40 years. Our licenses range from baby to adult. All the paper we use is responsibly sourced and we only work with suppliers and manufacturers that meet our stringent ethical requirements.