Skinny Trillium

Many gardeners tend to ignore the narrow leaf Trillium lancifolium in favor of the larger, more impressive species, but we think this smaller toadshade is quite garden worthy. Below are two clones we’ve named and introduced in the past. One is in full flower here at JLBG, and the other is right behind in mid-March. Hardiness is Zone 6a-9b.

Those of us who have studied trilliums extensively in the wild, feel that all Trillium lancifolium are not created equal. In other words, what is currently known as Trillium lancifolium is most likely 2-3 different species. These are botanically known as cryptic species, since they are hiding in plain site. Advances in DNA now allows researchers to confirm field observations, so don’t be surprised if you see more new trillium species being named from this complex.

The first image below is Trillium lancifolium ‘Lancelot’, a selection from North Florida that forms dense clumps, compared all of the other plants from this population, which grew as solitary stems. The flowers are also butterscotch instead of the typical purple.

Trillium lancifolium ‘Lancelot’

Trillium ‘Black Panther’ is a JLBG selection from a cross of genetics from a Florida population with a Tennessee collection. It also forms dense clumps.

Trillium lancifolium 'Black Panther' in the garden
Trillium lancifolium ‘Black Panther’

Delicate Toadshade

Flowering now in the garden is the delicate toadshade, Trillium delicatum. This diminutive trillium, published in 2019, hails from Central Georgia, where it naturally grows in floodplains. Despite a damp habitat, it has performed beautifully for us, even in average to dry garden soils. This species is quite rare, and is suffering significant damage from feral hogs, making ex-situ conservation even more important. Our clumps are getting large enough for us to hopefully make divisions available within the next year.

Trillium delicatum

Playing 3 on 3

Here’s a fun combination this from the garden this week, where we combined two three-leafed plants together…a silver leaf Trillium cuneatum with the hardy purple-leaf shamrock, Oxalis triangularis. You can have all kind of fun making these little vignette combinations in your garden, using your school colors, or any other design scheme that suits your tastes.

Striking Gold

Trillium cuneatum ‘Oconee Gold’ is a rare gold-flowered selection of the typically purple-flowered southeastern toadshade. We found our original plant of this in Oconee County, SC, and have propagated them from seed since that time. If we keep the yellow-flowered plants isolated from purple-flowering clones, we have more than 50% that reproduce with yellow flowers. The time from seed to flower is usually five years. Winter hardiness is Zone 5a-8b.

Delicate trillium

In flower now at Juniper Level Botanic Garden (JLBG) is the newest published species of toadshade, Trillium delicatum, which became official last week!  Trillium delicatum, which from a distance could be confused with Trillium decumbens hails from central Georgia, where it’s found growing in floodplains. DNA studies found that it is more closely related to the Alabama-centered Trillium stamineum. 

This leaves only fifteen more potentially new species in the Southeast US that are currently being studied for future naming…pretty exciting times. 

As an ex-situ conservation garden and since we do not endorse sales from plants collected in the wild, our JLBG propagation team are working to make this available from seed, so keep your eyes peeled.