Hello and a very warm welcome to you douglas!
Where exactly are you in Canada?
To the best of my knowledge, there are no species of worms native to where you are gardening. You're in the same boat as me as any worms present on my property are all non-native invasive species from Europe and Asia. Much more research is necessary in this area but for the time being, it is best not to introduce any worms to areas where they do not exist-
All of the terrestrial earthworms in Minnesota are non-native, invasive species from Europe and Asia (There is a native aquatic species that woodcock eat). At least fifteen non-native terrestrial species have been introduced so far. Studies conducted by the University of Minnesota and forest managers show that at least seven species are invading our hardwood forests and causing the loss of tree seedlings, wildflowers, and ferns. See "What are the harmful effects of non-native earthworms" below for more information.
Minnesota's hardwood forests developed in the absence of earthworms. Without worms, fallen leaves decompose slowly, creating a spongy layer of organic "duff." This duff layer is the natural growing environment for native woodland wildflowers. It also provides habitat for ground-dwelling animals and helps prevent soil erosion.
Invading earthworms eat the leaves that create the duff layer and are capable of eliminating it completely. Big trees survive, but many young seedlings perish, along with many ferns and wildflowers. Some species return after the initial invasion, but others disappear. In areas heavily infested by earthworms, soil erosion and leaching of nutrients may reduce the productivity of forests and ultimately degrade fish habitat.
The above would hold true for both you and me. I have decent experience with terrestrial earthworms. The above is probably not what you wanted to know however earthworms can be extremely destructive and it is best to not introduce them to areas where they do not currently exist.
I have some experience with wetlands. They're my favorite type of ecosystem in part because they are so fragile.
I am in the process of restoring mine. It will be a very long time before my wetlands are some semblance of restored.
I am in the United States and we have some pretty intense laws on the books regarding wetlands. In other words, modifying any wetland down here requires the owner to jump through many important but necessary hoops. Wetlands are protected and regulated down by me. I rely upon a host of professionals when working in my wetlands.
Regarding hummocks, they can drastically alter the hydrology of a wetlands system. Tinkering with the hydrology of a wetlands system can have disastrous results. Best to work closely with environmental engineers or any other qualified professional when contemplating any such "enhancement" as in the long run... these "enhancements" frequently have the opposite effect on a wetlands.
with, wild rice, potatoes, wapatoo, carrots, onions, garlic, cabbage, chinese greens, broccoli, blue or huckle berries, strawberries, raspberries, gooseberries, mint ** (Mentha aquatica, M.spicata), crayfish, other fast growing fresh, cool water fishes, yellow and or blue or specialty irises, Violets, herbs, annise hyssop, Millet, amaranth, Galingale, (Cyperus longus), or Duckweed, in these sorts of wetland environments?
I have some experience with Zizania palustris which is our native wild rice.
I have no experience with potatoes, carrots, onions, garlic, cabbage, chinese greens, broccoli, blue or huckle berries, strawberries, raspberries, gooseberries, because these are plants that did not occur naturally in my wetland system therefore they will never be introduced to my wetlands. Doesn't mean I can't grow carrots or onions or any other vegetables in the upland areas of my property but they won't be grown anywhere near the wetlands.
Regarding the Wapatoo, several species are native to my region and several species occur on my property. I like these plants very much. The variety of Sagittaria one would use in a wetlands system would depend on many variables but most notably, which one is indigenous to the specific wetlands.
Regarding the "mint ** (Mentha aquatica, M.spicata)", I have good and solid experience with both of those plants. They are not indigenous to the continent of North America and are formally classified as invasive species and/or noxious weeds. They frequently escape from gardens. When these plants are introduced to a wetlands system, they do damage that is often times difficult if not impossible to reverse. I spend endless hours eradicating these plants from my property. I am not alone. There are many people out there removing these plants from their properties. Based on the experiences I have with these two plants, I am on my knees praying for you that you don't introduce either of those to your property.
Regarding Orconectes rusticus (Crayfish), I have decent experience with them. They're classified as an exotic invader. They were introduced to my area, most probably accidentally. If you have them in your area (I don't believe you do as of yet), they are most assuredly introduced. I added a small pre-form pond to my property. This particular pond has shelves for plants. I fill the bottom of the pond with a few inches of water. I tossed in some rocks and branches and such. Whenever we run across crayfish on our property, we place them in that preform pond where they can not escape. At night, the raccoons come and eat them. If you have a few minutes to spare, I would encourage you to read the information at the links below to better enable you to get a feel for why there is growing concern over repeated introductions of crayfish to areas
Regarding cool water fishes, I have very little experience with native fishes . My wetlands became so degraded that the water in which they once survived and thrived could no longer sustain their life so they died off. A crying shame. I will work on re-introducing the species that were documented as having been present on this property in about 5 years after I plug along cleaning it up and have professionals come in to deal with the hydrology issues that occurred as a result of the non-native species invasions. It takes time and most unfortunately for me... reversing the damage is going to take a lot of money. Best guess right about now is that I'll be in the league of 30k plus if we do most of the work on our own. I add this because we had no idea how degraded our wetlands were when we purchased this property 20 years ago. We inherited this mess and are going to give it our all. It would be my suggestion that you join this group of people if you want to learn more about cool water fishes and how best to provide habitat for them-
I am a member of NANFA. They provide forums. You do not need to be a NANFA member to participate in their forums.
Laced throughout their forums you will find some of the top wildlife biologists on this continent. Other disciplines are also represented in their forums. There is also a wetlands scientists initiative however I don't believe that would be an appropriate match for you.
Now onto your yellow and blue iris. I have good solid experience with both. Your Yellow Iris is probably Iris pseudacorus. That plant is Eurasian in origin and is classified as an invasive species and/or noxious weed on the continent of North America-
It took me years to get rid of this plant. I am happy to say I believe it is finally eradicated from this property.
I suspect the Blue Iris you mentioned is Iris versicolor. I have good and solid experience with both Iris versicolor and I. virginica. Once I removed the Iris pseudacorus, a seedbank of the North American native I. versicolor bounced back from death. I was most pleasantly surprised. To date, I have now encouraged the regeneration of approximately 500 of this species. They are breathtakingly beautiful.
I have experience with other specialty type Iris. I grow most of mine in raised beds that have barriers beneath the ground to contain their rhizomes. Some are grown alongside a sidewalk where they are contained.
There are some tens of thousands of acres of this site type unused around here at present and I'd like to learn more about enhancing their productivity for humans and wildlife.
Those tens of thousands of acres are not unused. They are providing invaluable habitat to thousands of species of unique wildlife and vegetation. In addition to the habitat they provide, they perform unique and and vital ecological functions from which humans derive substantial and irreplaceable benefits. Your tens of thousands of acres of wetlands are far more productive than many could ever imagine in their wildest dreams.
If the information I have provided above is the type of information you were looking for, I would be happy to comment further on "Violets, herbs, annise hyssop, Millet, amaranth, Galingale, (Cyperus longus), or Duckweed".
It is refreshing to run across someone who wants to learn before leaping. I do believe it to be in your best interests to begin contacting appropriate governmental agencies as well as other appropriate professionals. A good place to start would be here-
Most landowners I have run into have already leaped and are finding themselves in big pickles.
Best wishes to you.