• Eventual height: 1.2m
  • Eventual spread: 1m

Iris pseudacorus var. bastardii

yellow flag iris

5 year guarantee Perfect for pollinators
1 litre aquatic pot £21.99
PL00003480
£21.99
PL00003481
£29.99
PL30007546
£34.99
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  • Standard £5.95

This perennial is semi-evergreen so it can lose some of its leaves in winter. In colder regions or more exposed gardens, it may lose them all, but then fresh new growth appears again in spring.

  • Position: full sun or partial shade
  • Depth of water: 5-25cm (2-10in)
  • Rate of growth: average
  • Flowering period: July to August
  • Hardiness: fully hardy


An vigorous yellow water iris, suitable for planting at the margins of large ponds or lakes. Iris pseudacorus var. bastardii produces clear, sulphur-yellow flowers on branched stems in July and August and ribbed grey-leaves. An elegant and robust water-loving iris that provides excellent wildlife potential.


  • Garden care:
    These plants are potted up (using a suitable aquatic compost) into aquatic pots. These pots are made of a fine mesh, which allows water to circulate through the compost, providing the plants with both oxygen and nutrients. If you are using them as a aquatic plant, they can be planted into neutral to acidic soil (for best results) up to a water covering of 25cm (10") deep. To enhance flowering divide congested clumps every three to five years.
    • Humans/Pets: Harmful if eaten
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