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Posts Tagged ‘herb robert’

This won’t be the last thing I have to say about weeds. I haven’t touched on blackberries, fireweed, or cultivars gone wild. But I’ll leave you with these last few for now.

Speedwells. According to the plant app on my phone, we have at least three speedwells growing in our yard: Veronica arvensis aka wall speedwell, corn speedwell, field speedwell, or rock speedwell, and Veronica serpyllifolia aka thyme-leaved speedwell, and Veronica persica, or bird’s eye speedwell aka Persian speedwell. They are in the plantain family (we have plantain growing in the big weed patch, and I don’t mean the kind that looks like a banana). Plantains are edible herbs. The speedwells are tiny groundcovers with teensy flowers, non-native, and have limited medicinal uses (burn salve). They are next to impossible to get ahead of, don’t compete with other plants, and make a wonderful groundcover mat. I gave up trying to weed them out of my flower beds. They are simply here to stay.

    Stinky Bob

    Herb Robert. Geranium robertianum. Stinky Bob. Do not make the mistake I did one summer: “Oh, such pretty flowers!” This escapee from hanging garden baskets is the nastiest, shallow-rooted, invasive ornamental. It competes. It covers ground quickly. It smells worse than most geraniums smell. I believe it is banned in Washington State to the north of us. If it isn’t, it should be. I have geraniums in the ground, I don’t need Herb Robert. Most geraniums are easy to control, make a wonderful, thick carpet, compete with everything – but so easy to cut back and pull up!. And they don’t spread like a prairie fire. Herb Robert, on the other hand… Just pull it.

    Sweet Violet (after the blooms are gone)

    Sweet violet. Viola oderata. I wish it was a native wild violet, but the wood violet, or English violet, is introduced. I just control it. It spreads rapidly and out-competes some plants. The pretty purple blooms are early and loved by bees. Fragrant, but such short stems they hardly work for a bud vase. They were one of my mother’s favorite wildflowers from her childhood, so I don’t try to completely eradicate them. Besides, they fill in all the deep shade places where other groundcovers won’t grow.

    Tansy ragwort. Jacobaea vulgaris. Pretty yellow flowers that you see growing all along Oregon highways and right-of-ways, but a plant that you can get fined for if you don’t eliminate it from your fields. They even introduced a moth species to try to kill off the plant, the very pretty cinnabar moth. It didn’t work. If you haul horses from Western Oregon or Washington, you must purchase your hay in Eastern Oregon. Livestock won’t touch it except as a last resort or if it is hidden in a bale of hay, and it is deadly when ingested. It shows up now and then in our yard and I get out a Grandpa tool or a shovel to dig down and pull the entire tap root out. This plant is easily a “KILL ON SIGHT” invasive introduced species.

    Tiny vetch. Vicia hirsuta. Introduced. This is a fairy garden miniature vetch with purple flowers and pea pod seed arils. Easy enough to pull, but why bother? It climbs the fence, it climbs my shrubs, it dies and adds nitrogen to the soil, and it is far from invasive. It doesn’t compete. It’s just such a pretty, tiny, miniature version of regular vetch. I leave it for the most part but sometimes I just pull it. It has no root system.

    Creeping wood sorrel. Oxalis cornucalata var. atropurpurea. Pretty yellow flowers, deep tap root, and machine-gun like reflexes for releasing a million and one seeds into the air, your eyes, and everywhere else. It’s a losing battle. Whoever introduced this species of sorrel, I dislike you. Yes, I get that it is edible. So is cilantro, but I don’t have to grow it in my garden. (Cilantro, in case you are wondering, tastes like having my mouth washed out with soap.) I think if there were to be a battle between chickweed, hairy bittercress, and creeping wood sorrel, the wood sorrel would win by virtue of deadly aim, distance seeds can fly, and the hair-trigger of the seed arils.

      For now, that is my summary of weeds I battle. There are more, I promise you. There are still the ones we leave growing in the front yard: plantain (& I don’t mean the kind that produces a banana-like fruit), flowers spread from neighboring yards like cinquefoil or rose campion, and the ones I grow for my own herbal use like stinging nettle.

      Don’t worry: I don’t allow the nettle to produce flowers and thereby produce more plants.

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      Last year I decided to let this pretty – but aromatic <ahem> “weed” go. The flowers are pretty & it makes a nice ground cover.

      Later in the summer, I keyed it out and discovered that what I have is “Herb Robert”, commonly known as “Stinky Bob”, and it is a pernicious escapee from potted flower arrangements. It’s a noxious weed that pushes out native wild flowers in Oregon and Washington. Can you hear my heavy sigh?

      I hate – HATE – invasive species. European starlings, English House Sparrows, tansy ragwort, Scotch broom, Himalayan blackberries, bullfrogs, pike, bass in native trout waters, nutria… the list is quite long. Some invasives you just have to learn to live with, like Eastern gray squirrels and Eastern Fox squirrels that have pushed our native chickarees deeper into the woods. The eastern squirrels don’t like the deep woods where there are no people, so the chickaree still reigns king there.

      I have also had my share of gardening “oops”: planting fireweed, for instance. Lovely native plant. Takes over rapidly – so not a great idea. Fortunately, it’s easy to get rid of, as is the Stinky Bob weed. Both just happen to be a bit labor intensive: you have to get on your hands and knees and pull them up.

      I got about 3/4’s of the flower bed cleared tonight before the sky turned dark and I truly had to come into the house. Tomorrow is supposed to be nice, again, and I hope to finish the flower bed. Pulling up the Stinky Bob revealed some plants I had planted earlier that had waned, in part due to the invasive non-native Oregon grape variety I planted some 10 years ago, and killed (for the most part) last fall.

      That Oregon grape grew 10-12′ tall and spread. I wanted native Oregon grape, that grows a foot tall and maybe spreads 2′ out – not something that shaded my flower beds and threatened to take over the fence between neighbors. I took a chain saw to it last year and cut it all down. There are sprouts trying to come up this year, but I strip the leaves as I see them. The stumps are covered in black plastic to kill them.

      I corralled the Comfrey that I replanted from the wild, thinking it was a native plant. It’s a nasty conqueror, impervious to most herbicides, and highly loved by bumble bees and hummingbirds. I discovered what kills it: vinegar and salt. I still have two plants, but if a runner starts, I cut it and apply vinegar and salt. It might take 2-3 applications, but the runners die and the Comfrey is contained.

      I have a cape fuschia that I need to kill. It’s so pretty, but it just takes over. The hummingbirds like it, but… It’s just too large for any place in my yard, sends out runners, and is becoming a pestilence. I hope my hummers forgive me: I will find something of equal value that is less invasive.

      Speaking of invasive: my milkweed plants are popping up again – and more of them this year! I don’t much care how invasive this plant gets, as long as it eventually calls to the butterflies I want to attract to my yard. It’s fragrant and lovely. It seems to propagate more by runners than by seed, although mine were originally planted seeds. It doesn’t seem to compete with the peonies and Dragon lilies, or the aster in that flower bed.

      I need to find a victim person interested in taking on some divided Dragon Lily bulbs. Mine have outgrown their space by four times. They aren’t invasive, hardy to zone 8 (maybe zone 9), striking purple-black flowers, attract beetles and flies… and smell like rotting hamburger.

      But first, I finish pulling up Stinky Bob…

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