Native Plants

In the Squam Lakes watershed we try to limit the amount of pollutants draining into our waterways as much as possible. Rainwater flows from impervious surfaces, collecting sediment and harmful nutrients that can end up in our lakes. Rain gardens are effective in removing up to 90% of nutrients, chemicals, and sediments from the rainwater runoff into our lakes. The plant's roots and depression of the garden slow the rainwater flow which not only limits pollutants but also reduces erosion.

Before you start planting it's important to make sure a rain garden is necessary and know some characteristics of the area:

Rain Gardens are used to slow the flow of water so pick an area that the water flows through and not an area with standing water. The garden should help prevent this collection of water and a properly constructed rain garden should drain within 24 hours.

Plants that are grown in semi-aquatic habitats like bogs, marshes, shorlines and moist soils are great for rain gardens. They have a naturally adapted erosion control and water resiliant system.

Ammophila breviligulata (American Beachgrass – sandy soils)
Cephalanthus occidentalis (Button Bush)
Viburnum recognitum (Northern arrowwood)
Myrica gale (Sweet gale, nectar for mosquito repellent and insect pollination)
Iris versicolor (Blue flag iris)
Impatiens capensis (Jewelweed)
Carex pensylvanica (pennsylvania sedge)
Lobelia cardinalis (Cardinal flower)
Most native flowers but be sure to check for a high water tolerance

This list is a great starting point but using native plant finders can be a great resource to find plants specific to your environment.

Try to find local nurseries who grow their own native stock or seeds. Local options include Cackleberries, Spiderweb Gardens, Maggie D’s Garden Center, McSherry’s Garden Center, and Bearcamp Gardens (be careful, they ship in non natives). 

Places like Aubuchon, Lowes and Walmart also have some selection of plants but they are not as environmentally friendly and do not have the promise of locally grown seeds.

Rain gardens are slightly more involve than your average garden follow these steps to create your own or get more information by clicking here and watching a short video.

Identify a site of rain runoff (gutter spout or impervious surface)
Identify the soil type (A 12 in deep hold should drain in 24 hours if not find a different site)
Mark out perimeter
Remove sod
Measure and create a 6 inch berm and overflow outlet
Level the bottom of the garden
Redirect water
Plant native perennial plants (see info above)
Mulch to keep out weeds (optional)