In my garden, there are four or five real problem plants. I have other interlopers, but the following natives and non-natives are really bad actors in my leaf-mold enriched soil. Note: most natives can be kept in check if you don’t water much and have lean, sandy soil. My garden’s natural soil is red sand with large pockets of clay. Over the years, I’ve enriched it with Back to Nature cotton burr compost, my own homemade compost and shredded leaves along with various wood bark mulches. My current favorite is shredded pine bark, but it can sometimes be hard to find.
Our first problem child, ‘er plant, is Verbesina alternifolia, commonly known as wingstem and yellow ironweed. When it blooms in summer, it is beautiful, and pollinators adore it. I do not. This native absolutely loves my garden and all of its resident plants…to death. I’ve ripped and pulled and done everything to get rid of it. Yet, this year, especially, with all of the rain we’ve had, it is trying to take over the lower left bed near my Japanese maple. I will be out there again today trying to convince it to live elsewhere. Why is it such a problem? It has rhizomatous (underground) stems that spread like those of mint. It also spreads by seed. It’s become an utter nuisance in my garden. It’s also a native plant that is great where it has room to spread. My garden is not that place.
Early garden mistakes often linger. Autumn clematis, oh autumn clematis, why ever did I plant you? I remember my friend, Katie, looking at the feverish growth of its first year and remarking it might be a future problem. I should have listened. It is a huge problem plant in the garden popping up everywhere. I get it killed in one spot, turn around, and there’s a stem taking off in another. I hate this plant even though wasps adore it. It also smells good in late summer and is a fall bloomer.
Brennan has been replacing split-rail fence around the back garden. Volunteer autumn clematis grows on a portion needing attention. He asked me if he could kill it. I laughed, and said, “Go ahead and try.”
Another early garden mistake I made was planting garlic chives. I bought them at a small herb show and plunked them into the soil. Well, I am now constantly digging them out. You may think my garden looks good, but I spy with my little eye problem plants galore.
Trust me, even mint, the planting mistake of so many young gardeners is nothing compared to garlic chives. Their roots are six inches deep at least. They bury these tenacious roots into the pockets of clay which hold them like cement. It’s almost awe-inspiring.
Japanese honeysuckle, Lonicera japonica. No, I did not plant this beastly plant. Bill loved his mother’s lovely smelling honeysuckle and planted a small sprig before he and I married. We’ve been married 28 years this May 12, and I am still trying to eradicate it. I’ve done nearly everything you can do to it including burning. Yes, burning. No, it’s still alive. I ripped out a ton of it this morning in fact. Not even brush killer will completely eradicate it. It only sets it back a season or so.
Drummond’s aster, Symphyotrichum drummondii. I bought a small plant many years ago, and today, yet again, I was pulling out pieces of it along with its rhizomatous roots. My problem is that this part of the garden is not dry and xeric. In fact, the soil is somewhat clay-like.. One day, when I am old and too tired, this aster will win the fight, but today is not that day my friends.
Mountain mint. I’m never sure which variety, but I call it common mountain mint. The first clue is the word mint. It and Drummond’s aster duke it out in a corner of the garden, and the battle goes back and forth all season with neither side winning. When I turn my back, they establish détente and begin marching together across the rest of the garden. Only my determination stops full garden domination.
These are my problem plants. Oh, I have more like obedient plant and Johnson grass, but I’ve mostly eradicated them. What are the plants in your garden that give you the most trouble?