Purple loosestrife Lythrum salicaria is a stunning plant for a medium to large pond or lake. The tall pink blooms can be seen from some distance, it is free flowering over a long period in summer. Commonly known as Purple loosestrife. Very attractive to bees and native. Position: Full SunPlanting depth: Damp soil to 5cm (2’’) below water level.Growth rate: MediumFlowering Period: July to SeptemberHardiness: HardySize: Height: 120cm (48"). Spread: 45cm (18") Aquatic pot and compost variations Aquatic plants come in a variety of pot and compost variations that have different benefits for planting and growing. Mesh Pot (Aquatic Compost)Pot can be removed and plant can be planted directly into soil or margins above or below the water line. Pot and plant can also be placed directly into water to be container grown, but will still need repotting in time. Pot (Aquatic Compost)Pot must be removed and plant should be planted directly into soil or margins above or below the water line. Pot (Regular Compost)Pot must be removed and plant should be planted directly into soil or margins above the water line. Cannot be planted directly into soil below the water line.