The Arch City Gardener

Journeys In St. Louis Gardening and Beyond

Filling in with Groundcovers

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20180525_150859In my gardens, groundcovers probably feel like Rodney Dangerfield. They get no respect. That may be partially true given their carefree nature and they are something I’ve put off adding to the garden. My garden “methodology” was to get in the big stuff–trees, shrubs–then fill in with perennials and annuals for their color and punch. Perennial groundcovers weren’t the stars of the garden I so desired. But I’m all about groundcovers now.

They are exceptional plants to fill in the nooks and crannies, provide a lovely carpet of green and crowd out the advancing weeds that seem to want to take over. I kept putting off the ground cover purchase, except for happy accidents like the cranesbill Biokova Karmina (geranium x cantabrigiense) pictured above.  I thought it was a perennial. But it’s also a groundcover.

One of the first plants I added to the edge of a bed, this hardy plant has shoots of pretty pale pinkish-purple flowers in spring. Looking at its serrated, lobed leaves, you see it’s related to the geranium (Geraniaceae family). It is in just the right spot and gets just the right amount of sun and is carefree and seemingly happy when neglected. That makes low maintenance cranesbill a winner in my book.

I hadn’t considered cranesbill is a groundcover until it started slowly advancing a couple of years ago. In my untrained mind I just thought it was filling in. No, it’s creating a lovely carpet.

20180525_150939Creeping jenny (Lysimachia nummularia) is another favorite. Chartreuse and seemingly indestructible, I have moved this groundcover from the front yard where it got too much sun to my shade bed where is it beginning to spread and mingle nicely with ferns, heuchera, hosta, and astilbe. I like the bright green contrast of this versatile plant and have seen it in hanging baskets. In too much sun, however, it loses its green gets too yellow. Its roots are very shallow; division is easy because you scratch the surface of the soil and pop the plant right in.

20180525_164304In the front yard I planted three small containers of sweet woodruff (Galium odoratum) beneath a tree. I had struggled to find plants suitable to this rooty space, and although I had planted a flat and a half of impatiens for a few years, they became hard to find due to downy mildew and I really wanted something perennial in this space. This spring (it’s 3rd year) we’ve had plenty of rain and it’s runners have really gone to town.

Like cranesbill, this is a mat-forming perennial that has taken off in no time. You can see that it still needs to fill in a bit, but I have no doubt this circle will be unbroken by the end of this season. Sweet woodruff gets lovely small white flowers in spring–in fact, it just finished blooming–and is well suited for the shade.

20180525_151241And, then there is wintercreeper (Euonymus fortunei). I am not sure I would call this my favorite ground cover but it is worth mentioning here. Is it a ground cover, a vine or a shrub? Maybe all three. In my last home, I spent a long hot summer pulling it out of a garden bed it took over. It was in abundance in a raised bed when I moved in this home and while it doesn’t look like it now, I trim it religiously. In the last year, I decided that the fence would be much prettier covered in green and have stopped cutting it back. You can see the result, which I really like, but I keep a watchful eye and shears and pruners nearby.

The Missouri Botanical garden warns  that wintercreeper has been identified by a task force of the Missouri Botanical Garden as one of the top 20 plants known to be spreading into native plant areas and crowding out native species in our region. Naturalists recommend against planting this plant.

20180512_200438And finally, not in my garden but certainly admired is baby tears (Soleirolia soleirolii). An alternative to a lawn, baby tears carpeted the courtyard of the Airbnb I stayed at in Rome recently. I have read that it is somewhat invasive and needs to be consistenly watered, but I have no first-hand experience with this plant.

What are your favorite groundcovers?

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Author: mjarz

Welcome to the Arch City Gardener. My name is Mimi and I started this blog to share my journeys in learning to garden in St. Louis County, Missouri and learn more from my readers who garden. Thanks for reading The Arch City Gardener.

3 thoughts on “Filling in with Groundcovers

  1. Someone else just mentioned the question, “What is your favorite plant?” Any good horticulturist would not have a favorite, but instead know what plants work for particular applications. I can tell you that English ivy is a serious weed here, and I really would not want to plant it. Other than that and a few other weeds, every ground cover should be appropriate to the application. (Although, when I lived in town, I really did like English ivy.)

    • I live English ivy. Question: are many groundcovers invasive?

      • I do not know if many are, but some of the invasive exotic specie here happen to be ground cover, such as English and Algerian ivies. For some reason, Algerian ivy is not as invasive into the forsts as English ivy is. Periwinkle and Saint John’s wort are also invasive in the forests, but do not climb trees.

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