Rorrippa nastutium aquaticum grows along the margins, has lime green foliage and tiny white flowers in late Spring and competes effectively for the nutrients that blanket weed feeds on. It’s a really helpful addition, especially where blanket weed is a problem.
Top tip: Can be planted in with other larger marginals. When the nutrient level has dropped and blanket weed is naturally suppressed, the nasturtium will disappear.
Propagation: Divide plantlets.
Depth of water over the soil: 0-5cm
Planting: Plant into 5lt planting crate using heavy garden loam or Westland Aquatic Soil