Cineraria Cineraria Cineraria In a 9cm pot. Also known as senecio silver dust. Yellow flowers in June/July. £1.80 Out of stock. Perfect for growing at the front of a border, and also as part of a container display. It works particularly well with bold-coloured plants, with which its foliage contrasts well. For best results grow in moist but well-drained soil in full sun. A half hardy foliage plant. 30cm heigh by 30cm spread.