Arrowhead /Sagittaria Sagittifolia syn. Sagittaria Sinensis/
Arrowhead is a productive and delicious aquatic plant that grows to 30cm with long stems, arrow-shaped leaves and edible tubers that look similar to a water chestnut.
Corms have a sweet, nutty taste similar to water chestnuts and can be cooked in similar recipes.
Can be boiled, roasted, sliced and stir-fried. Asian style soups, Japanese Tempura or steam and make a cold dressed salad.
Temperate to subtropical
Arrowhead is a bog or water-edge plant so it can grow in shallow water or in mud at the water’s edge.
Plant from corms or divisions in Spring in full sun. Plant about 5cm deep and at least 10cm apart to give the plants room to spread out and produce corms.
A pond or dam isn’t necessary to grow aquatic plants.
Arrowhead can be grown successfully in containers such as recycled concrete troughs, baths or plastic tubs. Fill the container with a 50:50 soil and well-aged manure or compost mix. Leave about 20cm headroom from the top of the container so the soil can always be covered with shallow water. Arrowhead can also be grown in wide shallow pots submerged in ponds. Place bricks under the pots to raise them up to the correct depth and mulch with a layer of gravel to keep the soil in place.
Corms (cooked) and young raw leaves and shoots.
Risks and weed potential
It does not set viable seed and is not considered invasive, but do not grow near waterways
Harvesting & Processing
Harvest when the leaves turn brown. Must be harvested, thinned and re-potted annually to maintain corm size.