Construction Complete for Anoka Rain Gardens

Four rain gardens were installed in a northern Anoka neighborhood as part of the City's 2022 Street Surface Improvement Project. Collectively, these gardens will capture nearly 10 acres' worth of stormwater runoff (over 700,000 gallons annually) which would otherwise drain untreated to the Rum River. Through this, sediment loading to the river will be reduced by 969 pounds/year, and total phosphorus loading will be reduced by 3 pounds/year.

Each garden provides additional ecological benefits through the planting of a diverse range of native species, creating several hundred square feet of rich pollinator habitat within the Rum River corridor. Species planted included butterfly weed, cardinal flower, swamp milkweed, red-osier dogwood, dwarf bush honeysuckle, and several others. 

Funding for project design was provided by the Metropolitan Conservation Districts Engineering and Technical Assistance Program, and funding for construction was provided by the City of Anoka and State Watershed-based Implementation Funding.
  164 Hits

Protecting Pollinators at the ACD Office

Plant species that are "native" to a local area (i.e., grow there naturally) provide necessary food and habitat for pollinators and enhance soil and water quality. Outdoor spaces that are in covered in turf provide very few benefits to pollinators or the environment, so frequent pockets of natural spaces are critical in developed areas. We recently converted part of our office property from an area that was annoying to mow into beneficial pollinator habitat! Here's how we did it:

In early summer, we used "sheet mulching" to kill off the grass and weeds. If you can plan to have a couple of months before planting, this is an easy method to prepare a site without using herbicides. The future garden space was fully covered in cardboard sourced from our local recycling facility and then covered with a couple inches of mulch. This effectively smothered existing weeds.

We selected 11 native wildflower species, 2 native shrub species, and 2 native grass species for the garden that will thrive with the amount of natural sun and water that the spot gets. Adding wildflowers is a no-brainer to provide nectar for pollinators, but adding grasses sometimes gets overlooked in pollinator gardens. Native grasses provide homes for insects to overwinter in and add beautiful texture to a space! There are many great places to order native plants from in Minnesota; we used Minnesota Native Landscapes and Glacial Ridge Growers.

Since our garden is next to a sidewalk, it was lined with river rock to create a cleaner look and contain the mulch. 

In early fall, the plants arrived and were planted. By this time, the cardboard underneath had broken down enough that it was easy to rip gaps in it to dig holes for the plants. Autumn planting gives plants an edge for developing strong roots in their new home and is a great option if you miss the spring planting window. The plants were spaced about 1.5 feet apart to leave them with room to grow into their full-sized forms. The already-present mulch will help hold in water and continue to suppress weeds.

It will be exciting to watch these new plants grow over the coming year to create a beautiful spot that will support some of our essential pollinator species in Anoka County.

You can also follow these steps to convert areas of your property that may not get much traffic or are hard to mow into a space that will benefit everyone! 

  166 Hits

Anoka Conservation District received BWSR’s Lawns to Legumes Demonstration Grant

Anoka CD, in partnership with Rice Creek Watershed District, Coon Creek Watershed District, City of Fridley, Coon Rapids, Blaine and Lino Lakes, received BWSR grant funds to create a pollinator corridor in the North Metro. These cost share funds are available to local residents and public spaces (e.g. places of worship and libraries) who are interested in creating pollinator habitat. Eligible projects include native pocket plantings, pollinator beneficial trees and shrubs, pollinator lawns and pollinator meadows to benefit the rusty patched bumblebee and other at-risk species.

Contact Carrie at This email address is being protected from spambots. You need JavaScript enabled to view it. or 763-434-2030 x 190 to learn more about the North Metro Pollinator Corridor cost share program. 

  412 Hits

It’s time to start native seeds for your pollinator garden!

There is so much magic and joy in starting wildflowers from seeds. This is a good time to start that process for many native plants so that they are ready in the spring. Many native plants' seed stays dormant until there are good conditions in the wild. As a gardener, you can create these conditions to break dormancy for seed germination. Many native seeds need cold moist stratification to germinate. This can be done outdoors if seed is planted in the fall and overwintered. If you want to start them indoors in containers then pre-treatment stratification is needed. Stratify by placing seeds in a damp paper towel, coffee filter, or sand and into a sealed plastic bag in the refrigerator (33-40 °F). Native plant's seeds range from needing 10 to 120 days of cold stratification. Once seeds have been stratified for the number of recommended days, plant seeds in a soil medium. Keep soil moist until seeds sprout and send up their first leaves. Water as needed and allow the soil to begin to dry out between watering. The magic continues as plants continue to grow!

Learn more about individual native plant seed pre-treatment and germination strategies in the Prairie Moon Nursery 2022 Cultural Guide and Germination Guide and the Tallgrass Prairie Center's Native Seed Production Manual.

If you aren't ready to start a new seed starting hobby, this is also a good time to start designing and planning a pollinator garden. Many local plant vendors have their plant catalogues ready for you to view. Be sure that plants you purchase are free of neonicotinoids, which are very toxic to pollinators.

See BWSR's Lawns to Legumes page for garden design templates and list of local native plant vendors. 

  421 Hits

Plant Native Trees and Shrubs for Pollinators

If you are looking for a low maintenance option to benefit native pollinators, consider planting native trees and shrubs. They provide overwintering habitat and food sources for our native bees, butterflies, moths, flies, wasps, and beetles. Many trees and shrubs bloom in the spring and provide an early nectar and pollen source. Fun fact from Heather Holm: One, 70 foot tall, mature black cherry tree (photos below) has the equivalent number of flowers as a 3,500 square foot perennial garden.

ACD's Annual Tree sale has a wide variety of trees and shrubs to choose from! See the full catalog here: https://www.anokaswcd.org/tree-sale-order-forms/2012-10-26-17-32-43.html

See Heather Holm's Native Tree and Shrubs for Pollinators guide for more information: https://www.pollinatorsnativeplants.com/uploads/1/3/9/1/13913231/treesshrubsposter.pdf

  784 Hits