Johnsons\' Viola Back To Black Seeds produce small and neat plants that display jet-black blooms over an extremely long season. Perfect for all baskets, patio containers and dramatic bedding displays. This hardy perennial grows up to 10cm in height. For best results plant in full or partial sun. Sow indoors between February and March, outdoors between April and July, ready to flower between October and August. Average pack contains 100 seeds. Warning: Seeds should not be eaten. Store out of reach of children and pets. Always read the instructions before use.