A lot of people are asking how to distinguish Rivercane from invasive bamboo species. This link should help you!
Here's some distinguishing traits I've observed myself:
River cane has a really full, bushy, leafy look that makes it really hard to recognize as bamboo from a distance, because the stems are harder to see. The shape of the individual cane with its branches and leaves is narrow, because the branches spread out very little, but the foliage is DENSE. It's like a plume.
River cane is stronger, denser and heavier than invasive bamboos I've seen.
River cane stems are always green all the way around, no yellow (unless the plant's been dead for a good long time)
River cane stems feel smooth like plastic to the touch. The common invasive bamboo I've seen here, when you run your hand upwards along it, the stem feels awful like sandpaper.
The biggest way to distinguish them: River cane grows 6-4 feet tall when it's in little patches, and up to 10-12 feet when it's in a large size patch (like, the size of a backyard) It is known to reach up to 15 feet tall nowadays and historical records claim heights of 30 feet or more in fertile river valleys. I really want to stress that it's RARE for it to get big. A canebrake will almost always be many times wider than it is tall (sometimes they grow in very long strips along fence rows)
The best time to look for it is in winter before things leaf out, because it's evergreen and grows in dense masses, making it easy to spot.
Some more cool stuff i've found out—River cane was a common food of bison! Earliest European settlers reported canebrakes so big that "100 bison could graze on a single canebrake." Apparently it used to make extremely high quality forage for livestock, before it was mostly destroyed.
European settlers apparently set their pigs loose in the canebrakes purposefully to destroy them, because the pigs would root up the nutritious rhizomes and kill the plant. Thinking of the relationship between Bison and Canebrakes, and the relationship between Eastern Native Americans and Canebrakes, and the relationship between Plains Native Americans and Bison...it seems like a pattern, huh?
In the case of both bison and canebrakes, they were a fundamental part of their ecosystem, and fundamental part of the indigenous cultures that used them for every material, their musical instruments, their homes, their most advanced arts, and even food (Rivercane shoots are edible just like other bamboo, and supposedly the seeds are edible too!) but European settlers purposefully destroyed the species almost completely. I can't help but wonder if there was a similar motivation.
Books that talk about Rivercane:
Weaving New Worlds: Southeastern Cherokee Women and Their Basketry by Sarah H. Hill talks about rivercane a LOT and gives tons of details of its uses and history.
Saving the Wild South: The Fight for Native Plants on the Brink of Extinction by Georgann Eubanks has a whole chapter about Rivercane.
Venerable Trees: History, Biology and Conservation in the Bluegrass is a book about Kentucky, but it talks about rivercane's importance including its relationship with bison. It's only a couple pages out of the whole book but it's still great information.
By the way, though, if you read any very early European account of Kentucky, the word "cane" is everywhere. It's just such a nondescript word it's hard to realize its significance.
On a more personal note...god, I love this plant. Here's another photo I took. When you're in the canebrake, it feels so cut off from the rest of the world; it's shaded, quiet, cool, and someone 10 yards away couldn't even see you.
i actually talked to my neighbor that I learned owns the canebrake. She had no idea what it was but she was excited to learn about it! It was a lovely conversation.
Apparently, she knew I had been down there a bunch of times and thought nothing of it. She said "Yeah I told my husband, If you see her down there, just leave her alone she's doing her thing." In the most sincere way possible, God bless this woman
She said I could transplant all I wanted, too. This was great! ...but I quickly learned how RIDICULOUSLY HARD it is to transplant from a canebrake of this size. The rhizomes are so big and tough, a shovel can hardly get through them, and unless you're at the edge of the canebrake, there's a thick mat of them going every which way. I was driving my whole weight down on this shovel and it kept just denting the rhizome and glancing off.
I did get some transplants but each one took like half an hour because I was fighting for my life!
Also, with a canebrake this size, it doesn't grow little canes that will later become bigger—it shoots up tall canes in a single season. The youngest canes, more accessible and toward the edge of the canebrake, were significantly taller than I was. I cut the top off of one transplant for ease of handling—I had a pair of hand pruners with me that were usually perfectly useful for small limbs, but I could barely get these things through the cane, it's just so strong and dense.
Someone research the material properties of this stuff ASAP. It's insanely strong.
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