Bastard Senna | Coronilla glauca 'Citrina'This showstopping, winter flowering shrub yields masses of fragrant, yellow flowers that'll help liven up your garden during the dreariest parts of the year Sherbet yellow umbels contrast beautifully with evergreen, glauca (a latin word meaning bluish grey) foliage Naturally bushy in nature, this plant is ideal for beds and borders. However, it can just as easily be trained to grow as a wall shrub in a sunny, sheltered spot. Its neat habit means it