A possible chimeric polyploid of H. 'Guacamole'. 'Jade Stone' has a much wider edge than the parent with increased substance and flatter growth pattern. It retains the vigor of 'Guacamole' and is quite striking in appearance. This variety probably came from the Dark Green Form of 'Guacamole' as it shares several its characteristics. It retains the vigor of 'Guacamole' and is quite striking in appearance.
Sport of H. 'Guacamole' with a wider edge, and more substance.
Flowers are very fragrant!