Amphibious bistort, Polygonum amphibium | Persicaria amphibia

    Description

    Amphibious bistort (Polygonum amphibium | Persicaria amphibia) is a versatile marginal pond plant with attractive floating foliage and soft pink flower spikes. Its trailing, elongated stems spread across the water surface, while the bottlebrush-like blooms rise above, adding colour and texture to the pond from July to September.

    This fast-growing marginal is suitable for full sun to part shade and can adapt from boggy edges to relatively deep water, up to around 80 cm. The floating leaves help increase surface cover, which can shade the water and reduce excessive light, while the dense growth offers natural shelter for aquatic wildlife.

    Amphibious bistort is ideal for wildlife-friendly ponds, naturalistic plantings and larger water features where its vigorous habit can be appreciated. Its combination of decorative pink flowers and spreading foliage makes it a striking choice for softening pond margins and creating a more established, natural look.

    Read more

    Amphibious bistort, Polygonum amphibium | Persicaria amphibia

      Product form

      Fast-growing aquatic plant with trailing stems and vibrant pink flowers.

      £27

      • Delivery within 2-5 working days
      • Gives fast surface cover to shade the water and reduce excess light
      • Adds soft pink flower spikes for long-lasting summer interest
      • Adaptable from soggy margins to deeper water up to about 80 cm
      • Dense growth provides natural shelter for aquatic wildlife

      Fast-growing aquatic plant with trailing stems and vibrant pink flowers.

      Description

      Amphibious bistort (Polygonum amphibium | Persicaria amphibia) is a versatile marginal pond plant with attractive floating foliage and soft pink flower spikes. Its trailing, elongated stems spread across the water surface, while the bottlebrush-like blooms rise above, adding colour and texture to the pond from July to September.

      This fast-growing marginal is suitable for full sun to part shade and can adapt from boggy edges to relatively deep water, up to around 80 cm. The floating leaves help increase surface cover, which can shade the water and reduce excessive light, while the dense growth offers natural shelter for aquatic wildlife.

      Amphibious bistort is ideal for wildlife-friendly ponds, naturalistic plantings and larger water features where its vigorous habit can be appreciated. Its combination of decorative pink flowers and spreading foliage makes it a striking choice for softening pond margins and creating a more established, natural look.

      Read more

      Product Details
      • Placement Zone(s): 2, 3, 4
      • Height: 10 cm to 30 cm
      • Planting Depth: Up to 80 cm - Plant from boggy edges down to about 80 cm water depth
      • Flower Colour: Pink - Soft pink flower spikes held above the floating foliage
      • Flowering Months: Flowers from July to September, adding late summer colour
      Care Instructions

      Amphibious Bistort thrives in full sun to part shade and is ideal for marginals in water gardens or bog landscapes. Start by placing your plant in shallow water, then gradually allow it to grow into deeper water or slowly lower the planting basket over time to accommodate growth. This fast-growing perennial can tolerate water depths up to 80 cm and prefers stable conditions to reach full vigor within a year. Regularly check water levels to ensure your Amphibious Bistort remains partially submerged, promoting healthy trailing stems and vibrant pink flowers from July to September. Its hardy nature makes it low maintenance, but proper water depth adjustment is key for sustained growth and stability at the water's edge.

      Ordering, Shipping, Tracking and Returns
      Ordering & delivery


      Some products are ready for immediate dispatch, while others are sold for a later delivery period so that they can reach you in good condition and at the right point in the growing season.

      The expected delivery period for the product or variant you choose will be shown below the Add to basket button and again in the basket and checkout.

      30 litre plants and some larger items are sent by specialist pallet delivery rather than standard parcel.

      If your order contains products with different delivery timings, it may be split into more than one shipment. Plants or products that are ready for immediate dispatch will normally be sent first, while later-season plants will be sent when they are ready. This helps us send live plants at the appropriate point in the season and in suitable condition to travel.

      For full details, please see our Shipping Policy.

      Delivery costs

      Add your delivery address and postcode during checkout to see the delivery options available for your order.

      Current standard charges for mainland UK include:

      • £5.95 Standard Delivery
      • £49.95 Specialist Pallet Delivery – used for 30 litre plants and certain other larger items and usually delivered within 4-15 working days. Where needed, we or the carrier will contact you to arrange a suitable delivery date.

      Highlands & Islands delivery options are shown at checkout. Current charges are:

      • Royal Mail from £5.95
      • Parcel Force from £24.95
      • Specialist Pallet Delivery from £99.95 to £174.95

      The correct charge for your order and postcode will always be shown before you place your order. For full details, please see our Shipping Policy.

      Tracking your order


      After placing your order, you should normally receive an order confirmation by email.

      We will also send a dispatch confirmation when your order leaves for delivery, together with tracking details where they are available.

      If your order is sent in more than one shipment, you may receive separate delivery updates.

      For full guidance, please see Track My Order.

      Returns & problems on arrival

      Because we sell live aquatic plants and molluscs, some parts of our policy work differently from standard retail.

      Live plants and molluscs are perishable and are not suitable for routine returns once they have been prepared for dispatch.

      If there is a genuine issue on arrival, please contact us within 24 hours using the form on our Contact page, with your order number, photographs, and a short explanation.

      We will always review genuine issues carefully and fairly. Depending on the circumstances, the appropriate remedy may include a replacement, refund, or partial refund where appropriate.

      Please do not send anything back unless we have agreed this with you in writing first.

      For full details, please see our Refunds & Returns Policy.

      Contact & business details

      Edenmere is a trading name of Solilium Ltd, a company registered in England and Wales.
      Company No. 16810551
      Registered office: 128 City Road, London EC1V 2NX, United Kingdom
      If you need help, please use the form on our Contact page.
      The customer services opening hours are Monday to Friday 09.00 – 17.00.
      If the matter is urgent, you may also call us on 01865 537277.

      For full details, please see our Terms of Service and other policy pages.

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        © 2026 edenmere is the trading name of Solilium Ltd (Company No. 16810551), registered in England & Wales. Registered office: 128 City Road, London EC1V 2NX.

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