A much bolder plant than Caltha palustris with striking, large, single yellow flowers that appear in early spring and continue for longer than other Calthas. Mature plants frequently have a few flowers throughout milder winters. Little or no maintenance is required but you can remove dead leaves and flowers to tidy. Plant in full sun to partial shade between 0cm and 20cm deep. Flowering period: April to July Mature height: 60cm to 100cm Growth rate: medium Reviews There are no reviews yet. Be the first to review “Caltha polypetala (Giant King Cup)” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.