Groundcover Review: Creeping Jenny Is Aggressive, Yet Likable
Back in May, I began experimenting with groundcovers to find out what would grow well in my conditions. I selected Lysimachia nummularia 'Aurea’, commonly known as Creeping Jenny, for beside the sidewalk because it is a salt tolerant plant, and the walk definitely sees plenty of salt during the winter. Since this area would get a good amount of sun, it would also pop a much-needed chartreuse color in my garden. (Planted in the shade, Creeping Jenny takes on a darker green.)
The Verdict? Creeping Jenny is a strong grower in my conditions.
As you can see from the photos, Creeping Jenny reached its full size of a 12-18 inch spread per plant in just a few months. It also kept weeds at bay, though the soil under the groundcover was thoroughly mulched.
What made Creeping Jenny so successful?
First, Creeping Jenny is invasive in Pennsylvania, so it was likely going to be successful without much help from me. But, the following conditions contributed to it’s excessive growth:
Moist Soil. The sidewalk’s pitch directs water right where the Creepy Jenny is planted, and this plant thrives in wet soils. It’s a rain garden plant, and this summer it did not stop raining. If I had wanted to control the plant a little more, I could’ve planted it in a dryer location.
Sun. If this was planted in a shadier location, it probably would not have grown as quickly.
I really appreciated the color this plant provided, though I can see how it would easily crowd out other plants. For now, it’s in the right spot in my garden because I have trouble keeping perennials alive in this spot because of wintertime sidewalk salting, but I can see where it would not be a groundcover for everyone.