Iris tectorum

Japanese Roof Iris

Japanese Roof Iris gets its name from its presence on thatched roofs in Japan. Iris tectorum has large violet flowers that are beautifully flecked with darker purple spots. They appear just above the wide somewhat floppy green leaves in early summer. Japanese Roof Iris spreads to make a wide patch eventually, and does best with adequate moisture but good drainage. It is the Asian version of Iris cristata, but much bigger. This is an excellent plant for green roofs that get adequate moisture, and a very difficult plant to find in the Trade.   2024 PHS Gold Medal Plant.

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Qty Description Comments Future Crop Future Crop Ready Date
Soil Conditions
Average
Moist
Sandy
Bloom Time
Spring
Special Recognition
PHS Gold Medal Plant
Foliage Color
Green