Bulb · Iridaceae family
netted iris
Iris reticulata
In short a 10-second read
Netted iris (bulb) grows to 0.1–0.15 m tall and 0.08–0.1 m wide when mature. It grows best in full sun to part shade, in dry to average soil. It flowers in March–April; the flowers are purple or blue. Hardy to −29 °C.
× spread 0.08–0.1 m
Where to plant
Sun, soil, frost.
It grows best in full sun to part shade, in dry to average soil. Hardy to −29 °C.
Sun
Tolerates several positions — choose to suit the rest of the garden.
Soil and water
dry to average · watering: little
Soil: sandy, gravelly, loamy
Soil pH 6–7.5
Frost
It copes with a normal winter outdoors.
How much space it takes
Mature size.
The mature plant next to a person (175 cm).
Next to a person
Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
What to do and when.
Months for Central Europe. The line shows the current month.
The year at a glance
Flowers
March–April · purple or blue
Pruning
No pruning needed — just remove the leaves once they have turned yellow (May–June).
Planting
bulb: September–November
Winter protection
not needed
Overwintering
It copes with winter on its own.
It overwinters outdoors without protection, hardy to −29 °C.
- Needs no protection
- Hardy to −29 °C
- Dies back in winter and regrows in spring
What to combine it with
Same needs, different flowering.
They share the same sun and soil and flower in other months — so the bed flowers for longer.
Frequently asked
Quick answers.
When does netted iris flower?
In March–April; the flowers are purple or blue.
Does netted iris tolerate shade?
It tolerates part shade (3–6 hours of sun), but not full shade.
How much space does netted iris need?
At maturity 0.08–0.1 m wide and 0.1–0.15 m tall; recommended spacing 10 cm.
Does netted iris survive winter outdoors?
Yes, without protection, hardy to −29 °C.
Where the data comes from
We compared the data in 16 expert sources. Last checked 20 October 2026.
Show sources (16)
- Missouri Botanical Garden Plant Finder — Iris reticulata
- NC State Extension Gardener Plant Toolbox — Iris reticulata
- GBIF Backbone Taxonomy — Iris reticulata
- GBIF Occurrence Search API — Iris reticulata
- Wikidata (CC0) — Iris reticulata
- EPPO Global Database — Iris reticulata
- OBI.sk — „Kosatec sieťkovaný
- RHS - Bulbs: growing guide
- RHS - Iris reticulata
- Invasive plant lists — this species is not on them: EASIN, EU, Slovakia, Czechia, Germany, Poland, Denmark
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