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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 each year 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. Sometimes these will escape from the pot, coming up next spring somewhere else in the pond, but in our experience this isn't common. 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). 

It is an easy plant to grow and has a striking appearance, its only drawback being that the outer leaves, knowing they have done their job, begin to yellow slightly even as the flower is out. Once the flower is done, the leaves give up completely and the plant goes over, not giving any more show until late spring the following year. 

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 tubers 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 tubers, then plant them 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 3 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.

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