Iris louisiana 'Heather Stream' - Louisiana Iris, Pond Marginal Plant
Iris louisiana 'Heather Stream' - Louisiana Iris, Pond Marginal Plant
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Iris 'Heather Stream' is a Louisiana iris hybrid, bred by Richard Morgan and introduced in 1984. 'Iris louisiana' is a group name rather than a true species. Our plants carry lavender flowers with yellow and white markings in late spring and early summer.
'Heather Stream' at a glance
| Botanical name | Iris 'Heather Stream' (Louisiana iris hybrid) |
|---|---|
| Common name | Louisiana iris |
| Plant type | Clump-forming iris; dies back in winter |
| Height and spread | About 1 m tall in flower (registered at 107 cm) |
| Flowers | Lavender with yellow and white markings; late spring to early summer |
| Position | Full sun or part shade |
| Soil | Reliably damp to wet, organic-rich soil |
| Pond depth | 0–10 cm of water over the crown (figure for Louisiana irises in general) |
| Hardiness | Hardy; not rated by the RHS (Louisiana irises are rated H4 to H7) |
| Native to | Garden hybrid from the USA (not UK native) |
Can it grow in water?
Yes. Louisiana irises like reliably damp to wet soil and grow at pond margins. No depth has been published for 'Heather Stream' itself; 0–10 cm of water is the figure given for other Louisiana irises.
How to plant and care for it
Plant in damp, organic-rich soil in full sun or part shade. Watch for slugs, snails, thrips and grey mould.
Is it poisonous?
Yes. Irises are harmful if eaten by people or pets, so wear gloves when handling it.
Which size should I buy?
Bare-root plants (7 cm, 9 cm, 1 litre and 3 litre) arrive without a pot or compost and are the most economical way to plant a group. Potted plants (9 cm, 1 litre and 3 litre) arrive growing in our peat-free compost and give a faster display. Packs of 3 come in 7 cm, 9 cm, 1 litre and 3 litre bare-root sizes and cost less per plant. The 2x Pot & Compost option is two plants supplied with pots and compost.
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