I love the longer shadows and golden light that come with September. But I can hardly believe that summer is nearly over. It went by so fast, though I did manage to get to a few garden tours.
Here are a few of the photos I took of some of the lovely moments along the way.
Let’s start with paths.
And now for water features, large and small.
Comfy sitting areas.
And things I just like.
It’s nice when something gross turns out to be useful (like how sheep sweat, lanolin, makes chewing gum softer). So I’m happy to report, in answer to a reader’s question some time ago, that, yes, Eurasian watermilfoil harvested from area lakes can be used in helpful ways, including as a soil amendment, fertilizer and even mulch.
First, though, if you’re not sure what Eurasian milfoil is, it’s that stringy, slimy plant that those big, blue boat harvesters remove from the lakes every summer. First detected in Minnesota in Lake Minnetonka in 1987, it is an invasive aquatic species that has spread to waterways across the state. The plant produces thick mats on the surface of the water and tangled stems and masses below, making it difficult, if not impossible, to swim and boat enjoyably. It can also disturb aquatic ecosystems by displacing native aquatic plants.
Acres of watermilfoil are removed from Minneapolis’ Chain of Lakes annually by the Minneapolis Park and Recreation Board’s mechanical harvesters. The machines usually cut off the top 3 to 4 feel of the plant, which can grow up to 15-feet long (super spooky to swim through). If you walk the paths around the lakes, you’ve probably seen (and smelled) piles of it onshore or at the boat launch.
Too Much Trash
Rachael Crabb, the Park Board’s water resources supervisor, says that once the milfoil is harvested, it’s dumped in small piles in a designated spot to dry out. Though terribly unwieldy when wet, milfoil is much easier to handle once it shrinks and composts down a bit. Until recently, the Park Board stored drying milfoil at a site at Fort Snelling. This worked well for the forestry division because whenever they needed to add organic matter to a soil mix, they could just take some from the piles.
The only problem, says Crabb, was—trash. In the lakes, all of that tangled milfoil acts like a magnet for all manner of garbage that winds up in the water in one way or another. Trying to separate the trash from the drying piles was time consuming and inefficient. So, last summer, the Park Board started looking at other options and found that the Minnesota Landscape Arboretum was happy to take the milfoil off their hands. “It’s a trek out there, but it’s the best option we have right now,” Crabb explains, adding that the first delivery is scheduled for later this year.
Soil Building and Mulching
As it happens, the arboretum has been using milfoil from the Lake Minnetonka Water Conservation District as a soil amendment for about a decade. “After it dries and turns into a nice compost, we usually use a manure spreader to put it on the research fields in November,” Peter Moe, director of operations and research, told me. In addition to supplying a bit of nitrogen, the milfoil makes a good amendment because the organic matter helps loosen the arboretum’s clay soil, improving its water-holding capacity and fertility.
In addition to being a good source of free organic matter, Moe says milfoil harvested from area lakes is desirable because it doesn’t have any weed seeds in it. “It’s such a valuable material, even if there is some trash to deal with, we would be very happy to have whatever the Park Board delivers,” he explains. “Our soils here in Carver County are very difficult to plant in if you don’t have enough organic matter, especially in the spring.”
It’s not a pretty sight, but Eurasian milfoil can be used as garden mulch (if you don’t mind the fishy smell as it dries). While researching this story, I talked with several gardeners who’ve tried it successfully. But here’s the thing, because it is an invasive species, it’s not a good idea for all of us to go running down to the lake to collect Eurasian milfoil for our gardens. Seeds and fragments could easily end up in waterways and spread the problem. In fact, Crabb pointed out that the interconnected storm sewer network could even transport milfoil to lakes that aren’t yet infested with it.
While it would of course have been best to keep Eurasian milfoil out of our waters, now that it’s here, it has proven to offer a few benefits. Even where there are thick milfoil mats on the surface of the lake, there are areas where native plants with low light requirements can grow intermixed with the milfoil stems below. Eurasian milfoil also helps make lakes clearer by keeping sediment settled out and using up dissolved phosphorous that would otherwise become food for algae.
And although native plant communities are always preferable to an abundance of Eurasian milfoil, thick milfoil growth can provide good habitat for young fish, as well as protection from large predators. “Milfoil has a more difficult time dominating where a diverse community of native aquatic plants is growing,” says Crabb, who, as part of her job, does aquatic plant surveys of Minneapolis Park and Recreation Board lakes. “We found 10 or 15 native species in Lake Calhoun a couple of years ago, so there are still a few areas in the lakes where native plants have been able to thrive, which is really amazing and a good sign that the lake is healthy even though we have Eurasian Milfoil,” she says.
My husband Mike and I were disappointed this spring when a Robin couple suddenly stopped building a nest above our back door and skedaddled for what we presume were more private spaces. Our friends Sher and Sarah were much more fortunate. Under the shelter of their front porch, robins built a nest, settled in and had a big family. Every spare minute, Sher and Sarah watched the robins coming and going with worms and other indiscernible food items that they dropped, and sometimes stuffed, into the four babies’ upturned beaks before hurrying back out for more.
All the jostling and wing flapping and cheeping was mesmerizing to watch, and they sat out on the porch quietly observing as often as they could. Sher is a freelance photographer, so she carefully climbed a ladder to get a shot when she could without disturbing the robin family. I want to share some of Sher’s photos with you because they’re beautiful, and they also offer a glimpse of something most of us never get to see, especially up close.
Here’s a good piece of gardening advice. If someone says that they have a ginormous amount of a certain plant and they want to give you some, RUN AWAY.
With few exceptions, if a plant has taken over that person’s garden, it will take over yours too because it is evil—or invasive—whatever you want to call it. It doesn’t care. In fact, it may employ trickery to try to get you to take it home and plant it.
That’s definitely the case with creeping bellflower (Campanula rapunculoides). Even if you don’t know the name, you’ve probably noticed this horrible-to-the-core plant because it’s tall and showy with pretty purple bell-shaped flowers. It’s also everywhere that it can possibly get a foothold, especially this year because the plant likes moist soil and we’ve had so much rain.
Native to Europe, creeping bellflower was actually introduced to North America as a lovely new ornamental (I’m not sure when) and it quickly became popular with unsuspecting gardeners. In fact, I frequently see this plant on tables at plant sales or potted up and sitting on the sidewalk outside of people’s houses with a “Free” sign on it. (To be fair, it isn’t invasive everywhere like it is here in the Midwest.) The problem is, creeping bellflower has a very strong and extensive root system so it spreads quickly and will easily take over your garden and choke out other plants.
It’s also hard to get rid of. I’m not a big fan of chemicals, and they don’t work very well on bellflower anyway, so I’m going to explain two non-chemical ways to kill this miserable plant. Basically, you can dig it out or smother it. I often do some of both. No matter which way you go, it will take years to eradicate this flower-weed creature. Or, like me, you may just get to the point where it’s at least tamed enough that you can cope with ripping out a few of them each year.Read More»
I generally try to avoid writing a lot about the same issue for fear of boring people to death or seeming like a nutter who can’t stop ranting about one thing or another. In the case of neonicotinoid pesticides, though, I’ve received so many calls and emails on this topic since I started writing about it a few months back, I feel like updates are wanted and needed. So I’m going to go with that feeling and tell you more about what I’ve learned lately in hopes that this will help answer some questions you may have now that you’ve likely learned more about this issue too.
First, here’s a quick recap for those who don’t yet know about neonicotinoids. Neonics, as they are often called, are a class of pesticides that have been linked to the decline of bees, particularly honeybees, over the last decade. Because they are safer for humans than some other pesticides, neonics have become widely used in the nursery trade as a pre-treatment for annuals, perennials, shrubs and trees. They are also found in many of the common pest control products gardeners buy off the shelf and use every day for everything from Japanese beetles to emerald ash borer. (Neonic pesticides include: imidacloprid, acetamiprid, clothianidin, dinotefuran, nithiazine, thiacloprid and thiamethoxam.)
Now that studies have shown that small amounts of neonics can harm bees feeding on the pollen and nectar of treated plants while larger doses can kill, more and more gardeners are making it a point to stop using products that contain neonics and to shop for plants that haven’t been treated with the pesticides. I’ve heard from a lot of people who have called, visited and emailed garden centers and nurseries locally and nationally asking about the use of neonics.
Stories vary widely with some places eagerly sharing their plans to discontinue their own use of neonics and to seek out suppliers who will do the same. But I’ve also heard reports of a fair amount of denial and defensiveness. What you need to know is that it isn’t enough for a retailer to say THEY are not using neonics any longer on the plants that they grow. You also need to know whether the plants they get from outside suppliers are neonic free. Getting that information will take willingness and time on the part of the nursery and from what I’m hearing, it’s clear that not everyone is putting in the effort.Read More»