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Sagittaria sagittifolia - Arrowhead, Swamp Potato

Regular price £3.95

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  • Approximate height: 45 - 90cm (18 - 36 inches)
  • Recommended water depth over crown of the plant: 5 - 20cm (2 - 8 inches)
  • Flowering time: July
  • Flower colour: White
  • Supplied in the 8cm pot we grow them in - for best results we recommend potting on using a 2 litre pot

Sagittaria sagittifolia is a rather impressive native British plant, with characteristic bright-green, arrow-shaped leaves, and white flowers with a dark pinkish centre in summer. It grows from a small tuber, appearing above the soil as a green spike in early May, and then growing fast to flower in July. After flowering, the plant dies back. Underground, each plant is making approximately two tubers for the following year. It will overwinter as these small round tubers, with a growing spike, but without leaves or roots, from autumn until the following spring (see picture). 

If you have purchased the plant from us during the time from autumn to spring you will have essentially got a pot of loose soil with a tuber buried in it. We would usually recommend that you leave it in the pot it came in until you see leaves and roots in late spring, and then pot it on or plant it out at that time, as it will be easier to handle. But if you do want to plant it up immediately, then carefully empty the soil out of the pot and find the tuber(s), then plant the tuber in the place of your choice with the growing spike pointing upwards and about half an inch of soil over its top. 

If designing a planting scheme, we recommend approximately 4 Sagittaria sagittifolia plants per square foot of ground, or 2 plants per linear foot of pond edge. Read more here on how to pot and care for your plant.