Yellow Flag Iris — Pond plants
Iris pseudacorus
Sun or part shade, regular watering — hardy anywhere in the UK.
- Plant out
- Apr
- In flower
- May, Jun, Jul
- Sun
- Part sun
- Water
- High
- Difficulty
- Demanding
- Hardiness
- H7
- Season
- summer
- Height
- 100–150 cm
- Spacing
- 150 cm
- Pets
- Toxic to pets
- Bee friendly
- Bee friendly
- Native
- Native
Growing notes
Grows to 1-1.5 metres. Space about 100-150cm apart. In flower May-Jul.
Toxic to pets
Yellow flag iris is harmful to people if eaten: the underground stems (rhizomes) are the most poisonous part and cause bad vomiting and diarrhoea, so do not let children handle cut pieces of root. Dogs and cats that eat any part, especially the rhizomes, get severe vomiting and diarrhoea. If a person eats any, get medical advice; if a pet does, ring your vet.
→ NHS 111 for a person (999 in an emergency); your vet or the Animal PoisonLine for an animal