On a recent less-humid morning I took a long walk around what I call Greystone and the maps now call the Central Park of Morris County. I was walking on the cross-country running track created in the back fields of what was once a psychiatric hospital. I was looking and listening for birds, as usual, and managed to find a few.
But after a while I started looking at the plants. In the area where saplings had been planted a few years ago there are now small trees - tulip poplar, sweetgum, sumac, among others - as well as fields of weeds I once thought were ragweed but I now know have the lovely name of common mugwort, which sounds like something out of Harry Potter. I like the mugwort because last year a drainage ditch filled with the stuff offered protection to at least four types of migrating sparrows, goldfinches and at least two types of warblers.
Back in September of 2019 I wrote about walking among the autumn weeds. It is now July of 2025 and the same weeds are already out thanks to a combination of warmer than usual temperatures and more than usual amounts of rain. Maybe they were always out in July, or maybe it's another sign of global warming.
So while I hate the weeds in my backyard with a passion, I enjoy the park weeds' flowers, fruits and seeds because they help pollenators and birds, migrating and those that hang around all year.
Here are some of my photos.
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| This is a wild grape vine. The fruits are now white but they will turn blue. They are enjoyed by sparrows, robins and other fruit-eating birds. The vine will engulf anything nearby. |
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| There is goldenrod that blooms in the middle of summer, and goldenrod that blooms near the end of summer. I grow the midsummer type. I presume this is the same type. |
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| This is called teasel. It is about four feet tall and has spiky, blue flowers that are favored by bees. Every time I see these I consider taking off a seed head or two for my garden. Maybe I will do it this year. |
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| This poison ivy was growing along the walls of what used to be the hospital dance hall. Unless cut down the ivy will completely cover the building. Obviously the Parks Dept. doesn't want to touch it. |
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| Trees can be weeds, too. This is tree of heaven, growing along the same building as the poison ivy. Unless you get it when small it will put its long taproot into the ground and be very difficult to remove, as I learned when I tried to dig out one from my in-laws' front yard years ago. |
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| A field of mugwort provides hiding spaces for birds, deer and rabbits, as I saw during my walk. |
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| I once had one of these inkweed plants growing in my yard but I quickly dug it up before the taproot went too deep. In this picture the berries are not ripe yet. When they are they'll be deep purple. Catbirds love these berries, as do robins and cardinals, among others. |
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| In front are the white wild carrot (Queen Anne's lace) and the blue chicory, whose roots can be made into a type of coffee. They are surrounded by mugwort and other weeds. Some of the growing saplings are behind them. |
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| Milkweed is very important to the survival of monarch butterflies. The caterpillars feed on the plant and bees pollenate the pink flowers. As I have learned in my yard, they spread by an underground root system. In a field they look lovely. In my backyard they have popped up in the wrong place and do not flower. Except for one that popped up in the ornamental grass garden, the rest are mowed down. But then more pop up. |
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| Ah, bee balm! This is another plant that will get everywhere because of its spreading roots. I grew it once but years of digging and weeding in that particular area eventually killed all of it. Now I look at large fields of bee balm and wish I still grew some in a bigger, preferably fenced, backyard. |
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| This weed with its yellow and orange flowers is known as the common toadflax, but I prefer its colloquial name of butter-and-eggs. It looks like a wild snapdragon. |
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| More than a few times I have carefully picked the wild raspberries along the path while I've hiked. As you can see here, other people as well as birds also help themselves. The stem is full of large, very sharp thorns. I have found seedlings all over my backyard. If they are behind the floodwall I leave them but if they are in the garden plots or the lawn, they have to go. |
Unfortunately, the jewelweed was not flowering at the time. Hummingbirds really like this late summer weed's orange or yellow trumpet flowers, especially when the birds need fuel to help them migrate south.
As I discovered last year, the county Parks Department mows down the fields of mugwort and the other weeds, including the ones I photographed, in October. But like all seeding, fruiting and spreading weeds, they'll be back next year. Of that I've no doubt.
