Marietta Gold Spark Bidens

Marietta Gold Spark is the trade name for the Bidens selection ‘Sunbidesupa’. It has finely divided green foliage and a mounded form with golden-yellow flowers. ## Garden use and appearance Suntory’s catalog describes Marietta Gold Spark as a compact, mounding Bidens with green foliage and abundant yellow flowers, giving a mature height of 14–18 inches and spread of 24–30 inches ([Suntory flower catalog](https://www.suntory.com/flower/lineup/catalog/)). The Canadian Plant Varieties Journal records ‘Sunbidesupa’ as the approved denomination, Marietta Gold Spark as its trade name, and Suntory Flowers Limited as the holder ([Plant Varieties Journal](https://publications.gc.ca/collections/collection_2009/inspection/A27-13-71E.pdf)). The catalog lists these size ranges in inches. ## Growing conditions Place it in full sun and use soil that drains freely. Water regularly while it establishes and during prolonged dry weather, while avoiding persistently soggy conditions. Its rounded form can add a bright mass to a sunny bed or container. ## Seasonal interest Suntory describes flowering through the season, with a stronger display from early summer into fall. Golden flowers and green foliage make a clear warm accent in mixed annual plantings. ## Maintenance Water container plants when the potting mix begins to dry and feed according to the mix or fertilizer directions. Remove damaged stems and trim lightly if the mound loses its shape. Remove spent flowers when appearance calls for it.