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Haliburton County

Shoreline Restoration

April 8, 2022

The ribbon of land between the lake and cottage has undergone monumental changes since lake development began. Many cottage owners removed the natural vegetation at the shoreline in an attempt to urbanize the area. We now understand that this has disturbed the natural environment for wildlife as well as reducing the water quality of the lakes with serious repercussions for human health.

Shoreline protection and an understanding of how it affects waterways is critical for a variety of wildlife species including spawning fish, turtles and nesting waterfowl as well as terrestrial song birds and small mammals. A dense strip of native vegetation is an important buffer filtering snow and water runoff and preventing soil erosion and providing a continuous wildlife corridor.

Experts agree that preserving and restoring cottage shorelines with native vegetation is the best solution for water quality and long-term shoreline stability. This would be the way nature kept shorelines stable and our lakes and streams clean long before the impacts of human development. Native plants are those that occur naturally in a region in which they evolved. They are the ecological basis upon which life depends, including mammals, birds and people. Without them and the insects that co-evolved with them, local birds cannot survive. Native wildlife of all kinds is reduced when the land along the shoreline is paved, turfed, ornamented and exposed. Clear-cutting vegetation, creating steep slopes or mowing to the water’s edge come with consequences.

Sourcing native plants is a lot easier than it used to be. A list of native plant nurseries and resources is provided at the end of the document. The use of fertilizers encourages weeds to the detriment of native plants. Pesticides are detrimental to all living things including humans, aquatic and terrestrial life.

We have created a document that attempts to bring together in one place a description of many common native species that will grow in the Highlands (Zone4), including those that are likely to be available from area nurseries. This revised document also includes the native insects and wildlife that are attracted to native flora as well as some edible and medicinal information about the plants.

This document can be used to help property owners identify the native plants that are already growing on their land so they can ‘preserve’ them and secondly to help property owners choose which natives to purchase and plant in order to ‘restore’ their property.

Download PDF Version Here

Filed Under: For Your Property Including Shorelines, Garden with Nature, Native Plants, Native Plants & Native Shorelines, Pests, Sunny Sites, Trees, Wildlife, Woodland

Blue Flag Iris

January 25, 2022

Blue Flag Iris (Native Ontario Wildflower)
Other Common Names: American Blue Flag, Dagger Flower, Flag Lily, Larger Blue Flag, Multi-coloured Blue Flag, Poison Flag, Snake Lily, Water Flag
French Names: Iris versicolore
Habitat: Marshes, shallow water, preferring sun to part shade and wet feet
Flowers: Its deep blue flowers bloom in July atop stems that reach 60-90 cm.

  • Perennial that spreads by fleshy rhizomes
  • Ripe seed pod will split open and release seeds
  • Muskrats will not eat the rhizomes

Irises make an attractive display in shallow water
All parts of the plant are toxic

Blue Flag Iris

Filed Under: Garden with Nature, Gardening for Guilty Pleasure, Native Plants, Native Plants & Native Shorelines, Perennials

Erosion Solutions From Heavy Rain

October 25, 2021

Question: Can you slow water runoff at the top of a slope?

Natural Stone StepsHaliburton County Master Gardener advises you to build a small rain garden at the top of your slope. Add a small berm at the top of and/or mid-way down your slope. Put in a berm of logs, branches, soil and/or rocks to slow down the water running off and to allow time for the rain to absorb and for plant roots to establish. The idea is to place any material that will act to obstruct or slow down the path of water. Organic material has the additional benefit of providing texture and nutrients to your soil as it breaks down.

Clearing a shoreline or hillside of herbaceous plants, shrubs and trees can lead to erosion if not re-planted. Longer, steeper slopes, especially those without adequate vegetative cover are more susceptible to very high rates of erosion during heavy rains than shorter, less steep slopes.

Please remember that a rain garden is not the same as a water garden. There are 5 components to a rain garden:

1. Depression
2. Amended filter bed (see wood log trench below)
3. Berm on the low side
4. Rockery to slow water entering the garden if necessary
5. Plants tolerant of water and long periods of dryness (i.e. 2-3 days of standing water)

Woodlog Trench DiagramNatural Wood Log Berm

 

 

 

 

A rain garden is a low tech solution for a location that periodically gets inundated with water. For example some downspouts can’t handle the quantity of rain and the spill over can cause existing vegetation to die and erosion of soil. Hard surfaces channel water during torrential rain and spring snow melt events that cause erosion particularly on steep slopes. A rain garden and berm might be an affordable solution. A 5X10 foot rain garden 6 inches deep is equivalent to 11 rain barrels.

Dig your rain garden (12-18” deep) and fill with a combination of logs, branches, and wood chips at different stages of decomposition. Add native soil and locally composted organic matter. Plant. Remember good humid soil will store a lot of water. Other practices for extreme sites is to mulch deeply, contour the soil, plant native species adapted to the location and plant densely.

Select the Right Plants

In this situation plants that can withstand short periods of flooding and long periods of dryness are required. Xeriscaping plants i.e. those that tolerate drought won’t do well in a condition that includes extreme wet and extreme dry. Likewise plants that require constant moisture will not do well.

Do favor native over non-native plants and do not plant fast growing invasive plants however tempting that might be to stabilize your slope.

The following native Ontario plants can tolerate moist and dry soil:

Aster (Aster spp.)
Bergamot, Wild (Monarda fistulosa)
Black-Eyed Susans (Rudbeckia hirta)
Blazing stars, Rough (Liatris aspera)
Evening Primrose (Oenothera biennis)
Bittersweet (Celastrus scandens)
Goldenrod (Solidago spp.)
Verbena (Verbena spp.)
Yarrow (Achillea millefolium)
Sweet gale or bog myrtle (Myrica gale L) Myricaceae (Wax-myrtle or bayberry Family)
Non invasive ornamental grasses, native sedges (they look like grasses and can tolerate some shade), and rushes. Hierochloe odorata or Sweetgrass
Marginal Woodfern (Dryopteris marginalis) can tolerates mid-summer drought if planted in the shade.
Butterfly Weed (Asclepias tuberosa) a Zone 3 Ontario Native that is heat and drought tolerant,
Liatris aspera or Blazing Star, another Ontario native,
Schizachyrium scoparium or Little Bluestem (Ontario native)
Highbush Cranberry (V. trilobum or V. opulus var. americanum). This native shrub likes to grow in open, wooded, somewhat poorly drained locations. In the ideal location, cranberry can become very wide, often three meters or more, and reach about the same height.
Low bush Cranberry or Squashberry (V. edule)
Nannyberry (Viburnum lentago) will grow almost anywhere including shade, but they take on their best form in full sunlight. In full sun their fall leaf colors will be a vibrant purple-red.
Common or Eastern Ninebark up to 3 m, spring flower cluster, berries

Credit Valley Conservation planted native plants in their rain garden. They chose the following plants because they were widely available at local nurseries: Red Osier Dogwood, New England Aster, Tall Meadow Rue, Black Eyed Susans, Canada Anemone.  Shade-tolerant native plants included: Common elderberry, Sensitive Fern and Heart leaved Aster.

A dense base of day lilies and irises will give you a fibrous root system. While they aren’t native they are often planted in a naturalized landscape.

To buy plants please try your local garden center and check other sources listed in our list of suppliers and services here.

 

Article Sources

Credit Valley

Toronto Zoo

For additional plant selection please see Appendix C, List of Plants tolerating both wet and dry conditions. University of Guelph

Filed Under: Garden with Nature, Gardening for Guilty Pleasure, Native Plants & Native Shorelines, Planning and Design, Tips

Go Wild

July 4, 2020

Go Wild Article

"Homeowners in the Highlands are realizing that, in many cases, nature does it best.  Discover how using naturalist planting can enhance your cottage - and your own well-being."

View PDF here>

Filed Under: Garden with Nature, Go Wild

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