Grasses and grass-like plants are overlooked by many
gardeners – they are plain and messy looking compared to clipped lawns and
don’t have showy flowers. Wait, they have flowers? Who knew?
While many folks might consider them all “grasses”, they aren't; For the most part they fall into the familiar 3 groups: sedges, rushes and grasses. In fact you might have heard the familiar rhyme (which comes in several forms). The first one is my favorite:
“Sedges have edges; rushes are round; grasses are hollow
right up from the ground”.
Another version of this poem is, "Sedges have edges,
rushes are round, grasses have nodes and willows abound." Or “Sedges have
edges, rushes are round, grasses are hollow, what have you found?” And one more
that you might find useful: “Sedges have edges, rushes are round, and grasses
have joints.” All of these are meant to offer clues for identification.
I have lately become very fond of sedges which are known
botanically as Carex. More of them have found their way into
cultivation, and I was charmed into purchasing a few of them. But I have also learned how to
identify them and have been able to find several different species in the wild
and in my own yard (the wooded section).
So what does it mean that “sedges have edges”? Several
sources describe the arrangement as having “triangular stems” – there are 3
edges as if the blade was V-shaped. One might consider that one edge is a ridge
that runs down the center. Of course you can also identify it by ruling out the
other two: the leaves are not round, so it’s not a rush. And it’s not a grass
because there are no joints and the leaf is not hollow.
Garden worthy features of Carex include being mostly evergreen, being shade tolerant, growing
in a clump form, and being fairly deer resistant. (But not cat resistant – they will
try to eat them as they think they are grasses too.) Take note of what I said – deer resistant. Yep, I’m growing them
right out in the open and they have not eaten them. They have eaten the
Virginia creeper vine and the azalea right next to them, but they have not
eaten the Carex.
The first one that I got was a nursery purchase. The common name is spreading sedge and it is Carex laxiculmis 'Bunny Blue'. This is an arrangement of 3 plants purchased as quarts. I liked the blue-green color, and it has been a beautiful addition to the more cultivated area in my garden. It has spread a little, and I have been able to easily pot up the babies for a donation to the GNPS spring plant sale.
Shortly thereafter a friend gave me two small pieces of Carex plantaginea that she rescued in North Carolina with the native plant society. What a handsome plant! The quilted texture of the leaves is a great addition to the garden, and the small plants are now robust clumps (but no babies in sight).
As you can see, Carex are handsome plants. There are hundreds of different species native to the United States, many native to the southeastern US. Across the different species there are a range of different leaf colors, leaf widths and lengths, and growing conditions. Many are shade tolerant but others grow in the sun, especially morning sun. They are found in habitats that range from dry to wet and all in between.
Now that I am more aware of sedges, I see a variety of species in the woods wherever I go. Here is one that popped up in a pot of Trillium that someone gave me. It's a keeper. When it flowers this spring, I hope to identify it.
Carex laxiculmis 'Bunny Blue' |
Carex plantaginea |
Shortly thereafter a friend gave me two small pieces of Carex plantaginea that she rescued in North Carolina with the native plant society. What a handsome plant! The quilted texture of the leaves is a great addition to the garden, and the small plants are now robust clumps (but no babies in sight).
As you can see, Carex are handsome plants. There are hundreds of different species native to the United States, many native to the southeastern US. Across the different species there are a range of different leaf colors, leaf widths and lengths, and growing conditions. Many are shade tolerant but others grow in the sun, especially morning sun. They are found in habitats that range from dry to wet and all in between.
Unknown Carex |
Now that I am more aware of sedges, I see a variety of species in the woods wherever I go. Here is one that popped up in a pot of Trillium that someone gave me. It's a keeper. When it flowers this spring, I hope to identify it.
Carex is one suggestion if you're looking for a native replacement for Liriope, a non-native plant often used for edging. You can see the resemblance.
Carex is #6 on the list of perennials that support native Lepidoptera (butterflies and moths) as a host plant, so the usage of it instead of a non-native plant is even more beneficial.
Carex pensylvanica |
So I hope you will consider using Carex in your garden. I think if you try one, you will soon become as enamored as I am. The many varieties of texture and color are sure to offer you a chance to use several species.
Now I think I'll go outside and plant this last one that I bought ... the fine bladed texture of Carex pensylvanica was irresistible, and I heard it does well in dry shade. I have just the place ....