Plants: Grab yourself some viola plants. Blooms: Flowers between March and August. Supplied: Delivered as plants in 2 litre pots with a varying plant height of between 5-20cm. Stunning: Add a splash of colour to your garden with these viola plants. Colour changing: The flowers of these plants change colour day by day - one day they'll be blue, the next they may be white! Set options: Choose from a single plant or a set of 2 plants. Viola Plants | Living Social