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Trillium grandiflorum 'Plenum'

Double White Wake Robin

Plant Type:

SHADE PERENNIALS

Trillium grandiflorum 'Plenum' - ​A gorgeous double-flowered form of an esteemed Eastern North American woodlander. Rhizomes are slow to increase but not difficult to grow... be the envy of your gardening club. Fertile, humusy woodland conditions. The White Wake Robin will be content in early morning sun and dappled shade all through the day. Avoid hot sun. Open shade is just fine. Let me share a memory... When traveling on the Northway (NY route 87 in the Adirondacks to visit the Montreal Botanic Garden in May there were fields of Trillium grandiflorum as far as the eye could see from forest edge until the tree density and increasing dim fogged and finally ended the view. It was astonishing, mesmerizing and brilliant these carpets of pure emerald and white. Big hefty rhizomes looking for a home. The species originates in Eastern North America; where the 'Plenum' form arose we are uncertain.


Height:

8-12 in

Spread:

8 in

Colors:

White

Zone:

4 to 7
What is my hardiness zone?

Characteristics and Attributes for Trillium grandiflorum 'Plenum'

Season of Interest (Flowering)

  • Spring

Season of Interest (Foliage)

  • Spring / Summer

Light

  • Morning Sun / Afternoon Shade
  • Dappled Shade
  • Shade

Attributes

  • Accent
  • Collector Plant
  • Grouping
  • Woodland
  • Rock Garden

Growth Rate in the Garden

  • Slow

Soil

  • Fertile
  • Organic
  • Draining
  • Woodland

Origins

  • Eastern North America

Propagated By

  • Division

Genus Overview: Trillium

Common Name: Toadshade

Trillium is a magnificent woodland genus; most of the 49 taxa (49 according to Don Jacobs whose authority I accept) grace us with their presence right here in North America, a handful in East Asia and nowhere else. They are spring bloomers with many becoming dormant by midsummer. Their structure is basic, this from “American Treasures” by Don L. Jacobs and Rob L. Jacobs: “Adult individuals produce no basal foliage, only a whorl of 3 leaves at the stem summit. Furthermore, all floral parts are in whorls of three: 3 sepals, 3 petals, and 3 seed-bearing carpels jointed into a single pistil with 3 pollen-receptor stigmas.” Henceforth, the “Tri” in Trillium makes simple and elegant sense. Be assured: none of our woodland plants are wild collected. Site Trillium in fertile draining soil in part sun to open shade. They are tolerant of dry summer shade. All our plants are offered by division of their slow growing rhizomes.