
The Bad
Lesser Celandine (Ranunculus ficaria), was introduced to the United States as an ornamental plant. It hales from Europe. Unfortunately, Lesser Celandine has become a threat to native plants and native plant diversity. And for urban gardeners, it can easily overtake a lawn. Lesser Celandine out-competes native plants with its very early seasonal growth coupled with a dense network of roots and tubers. Over time it forms extensive carpets in natural areas, crowding out native plants, especially native ephemerals.
Take a close look at the leaves of Lesser Celandine; they are flat and lobed. To me, they look like shiny, green shingles. Also, they have leaves and flowers at the same time- a great ID feature.
The Good

Winter aconite, (Eranthis hyemalis) is one of the earliest bulbs to bloom in spring and is in the buttercup family (Ranunculaceae). A native to Asia Minor and Europe, its small flowers resemble tiny buttercups. The solitary, yellow cup-shaped flowers are surrounded by bright green bracts that look like a collar around the blossom. Flowers have six petals.
You will find this in low-growing, rounded clumps about (3-6“) tall and wide. A key feature to look for is the narrow leaf that is divided into several finger-shaped lobes that appears after the flowers fade.
Use with caution! The tuber of winter aconite is quite poisonous and may cause nausea, vomiting, colic attacks and visual disturbances.
Use: Rock gardens, flower beds and woodland gardens. A very early bloomer, Winter Aconite is great for naturalizing under trees and large shrubs. For best results, plant in groups. This plant will go doormat in summer with the foliage dying back completely, so take that that into consideration when incorporating into you design plans.


