Carex siderosticta var. pilosa 'Treasure Island'

Treasure Island Rush, Sedge

Patents: PP#16332

Family: Cyperaceae

Genus: Carex

Parent: Carex siderosticta var. pilosa

Category: Grass

Zones: 5 to 8

Size: 9 to 12" tall, to 15" wide

Exposure: Filtered Sun, Part Shade, Shade


Often sold as Carex ciliatomarginata 'Treasure Island'. Green and white variegation on relatively broad, short leaves. May burn in full sun. Likes moist soil.


Patent application filed in 2004 by Hans Andrew Hansen, of Waseca, MN for Shady Oaks Nursery. Discovered as a sport of 'Island Brocade' in a tissue culture lab in Waseca.

My Experience: 

I purchased a 3" pot from Santa Rosa in June 2012 and planted it in the One Of Everything garden. It dwindled and I potted it up but it disappeared. I was surprised to see new growth in spring 2013.

Sources of Information

© 2010-12 Lisa J. Miner