Tag Archives: invasive plants

Bamboo Thickets Invade Garden

I didn’t start out to have bamboo thickets in the middle of my garden. I guess I was terribly naive.

My father had planted an edible bamboo on his place. It was big and beautiful. After he died I dug up a small piece of it and brought it home.

Bamboo seems to be hard to transplant. I’ve given pieces to several people and none have had much luck. Lucky them.

Ozark bamboo thickets are dense
This is an Oriental edible bamboo, not the native giant cane. Ozark winters tend to kill the tall bamboo canes. The tallest ones I’ve had were ten to twelve feet although the bamboo is supposed to reach thirty feet or more. So most of my thicket is up to eight feet tall and bushy. The goats will eat bamboo, but are not fond of it.

I didn’t know where to put this tiny plant and put it into a small corner of my garden until I could decide. It didn’t move. Instead it grew tentatively for several years.

Then the bamboo decided it liked this corner of my garden. The bamboo thickets arrived and got bigger each year.

Bamboo is a grass. Like many grasses, it spreads by runners. The bamboo in my garden has never flowered. This is lucky.

bamboo thickets spread with runners
A bamboo runner looks a lot like a bamboo stalk. The joints are shorter making it more flexible. The runners can loop over the ground like this one, go along about four to five inches underground or dive down a foot or more. Removing them is done by cutting it as close to the bamboo thicket as possible, uncovering the underground portions and pulling the runner up. Runners can be ten feet long or more.

The tiny plant now covers a ten foot square and isn’t content. Every year I dig up ten and twelve foot runners going out across the garden. They are tough, well rooted and a back killer.

I decided to get rid of my bamboo thickets. It’s plural as some runners went undetected so there are adjacent patches now.

I discovered the bamboo is used by several creatures I want around my garden. Toads hide in it. Wrens nest in it. Praying mantises lay their egg cases in it.

praying mantis case on bamboo cane
Both Carolina and Chinese praying mantises live around here. The big egg cases are from the Chinese mantises. Bamboo is a favored site for the egg cases and the mantises are welcome in the garden. That makes keeping a small thicket tempting.

I can’t keep pulling the runners up. My back complains mightily. The solution is to kill out the bamboo. Where would these creatures go?

This year I trimmed the bamboo thickets back to a six foot square area. There are mantis egg cases in this area.

Next spring I will destroy any bamboo that comes up anywhere other than in that area. Of course I said that another year and failed. I must get serious or my entire garden will become bamboo thickets. Where is that vinegar and salt spray recipe?

New Invasive Garlic Chives

In working on my botany project I keep coming across references to invasive species. There are lots of them, many escaped from cultivation.

I avoid planting these kinds of plants except in my vegetable garden. Vegetables aren’t known for their hardiness away from cultivation.

Except for garlic chives.

New invasive plant?

My garlic chive patch looks like snow in August when the flowers open. It buzzes and hums with activity. The insects are so busy with the flowers; I can brush by totally ignored.

Years ago my father gave me a pot of garlic chives. It was a ten inch pot crammed full. I promptly planted it in a corner of my vegetable garden.

The chives did well. They grew lush and bloomed profusely in August. Butterflies, wasps, bees, bumblebees, beetles, spiders swarmed around the flower umbels.

I didn’t cut the seed heads. Mistake.

My garlic chive patch is now six feet by eight feet. I leave it as it is in a difficult area. Besides, the blooms are so lovely in August and the insects do love the flowers. And I cut the seed heads.

garlic chive flowers

The garlic chive umbel is a partial ball of flowers. I’ve never counted them, but think there must be fifty in each one.

I missed a few. Garlic chives came up all over my garden. They came up outside my garden. This year they came up in the pasture.

At what point does a species become invasive?

My garlic chives haven’t reached it yet. I have given plants to people to plant in their gardens. Each person is warned to cut the seed heads. But, do they? Or have garlic chives spread from their gardens too?

Many invasive species hurt native areas. Autumn olive and Bradford pear displace native plants and aren’t as good forage as the natives.

Others have been here so long, like plantains and ox eye daisies, that they are part of the native flora now.

invasive garlic chive seed pods

Each garlic chive flower becomes a seed capsule. Each capsule contains three oddly shaped, black seeds. That’s around 150 seeds per umbel. When ripe, the covering turns brown and papery, splitting open. The seeds fall to the ground or are tossed when the wind blows the stalk.

Would garlic chives fit into the problem category or the ignore it category? I’m thinking it would be in the latter. Why?

It is a good insect pollinator plant. It is relished by goats so deer would probably like it too as a natural tonic against worm infestations.

In all probability, garlic chives will never become invasive. It does seed freely. However the plants are not aggressive enough when in competition against other invasives such as the grasses.

Still, it makes a person think: What potential problems lurk in my garden?