WILLISTOWN CONSERVATION TRUST

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  • Rushton Conservation Center

Winter Solstice

December 21, 2020 By Andrew Kirkpatrick

Solar system planets set. The Sun and planets in a row on the universe stars background. Elements of this image furnished by NASA. 3d illustration from Envato Elements.

As the clock winds down on 2020 come the hopes of a brighter future. The occasion of the winter solstice feels more relevant this year than any other in recent memory. The solstice is the longest night of the year and happens twice annually, once in the Northern Hemisphere in December and then in the Southern Hemisphere in June (when we’re all celebrating the longest day of the year). Nordic traditions bring the burning of a Yule log to observe the occasion, in China, they share rice balls called tang yuan with family at gatherings, Persian tradition celebrates Shab-e Yalda with fires burning all night, poetry readings, and eating summer fruits to protect against winter illness. Around the world, there are many rich traditions of celebration going on.

This winter solstice will be especially unique because of the planetary ‘Great Conjunction’ of Jupiter and Saturn, the two largest planetary bodies. The last time the planets were this close to view was July 1623, almost four hundred years ago and this rare celestial occurrence won’t happen again until 2080. Some are calling it the Christmas Star because of the proximity to Christmas this year. Regardless of what you call it, it will be a sight to see and should not be missed. The coincidence of this event occurring on the longest night of the year feels more meaningful. Just after sunset will be the best time to observe the splendor in the western sky.

The solstice and the conjunction bring to mind the Yin and Yang of the universe. The constant push and pull of tides and seasons. Everyone has been through so much this year; it’s easy to forget that we live in a very dynamic universe. A place where everything changes constantly and rainy days yield to sunny ones. Summer gives way to autumn, autumn to winter, and winter to spring. This winter of 2020 feels especially significant as we look to close the book on the troubles of the past year and focus on what’s ahead. In the darkness, there is light one cannot exist without the other.

We are excited for the year ahead of us at Willistown Conservation Trust and in the Stewardship Department. We’ll be finishing our Master Plan at Rushton Woods and Farm Preserve. We’ll be applying for grants to improve our other preserves. We’ll continue to work with our dedicated volunteers to repair trails and make the land more enjoyable for visitors. Our connection to the outdoors and the land in Willistown is one of our greatest treasures, and rest assured the Trust will continue to protect the land, improve the health of it, and connect our community to nature.

Filed Under: Stewardship

Rain Gardens – Digging Deeper

May 26, 2020 By Andrew Kirkpatrick

Rain gardens are popping up everywhere. You will find them on college campuses and office parks, in mall parking lots, along city streets and multiuse trails. They have grown in popularity over the last several years, in response to the many problems stormwater causes in the landscape.

When it rains – especially a heavy rain – we see flooding, erosion, and pollution from stormwater runoff. Just the first inch of rain during a storm collectively does the most harm.

The good news is local use of rain gardens (even on your own property!) can help to reduce flooding, erosion, and pollution over a broad region.

The Benefits of a Rain Garden

A rain garden on your property provides numerous benefits, including:

  • Intercepting water and provide habitat for birds and wildlife
  • Reducing stormwater runoff by 30% compared to a traditional turf lawn
  • Adding natural beauty

It is not just another garden bed and does not need to be limited to perennial wildflowers and grasses. Shrubs and trees can also be used in rain gardens to achieve increased absorption, retention, and beauty.

Planning Your Rain Garden

When planning a rain garden, you need to determine what is known as the infiltration rate of your soil, or how quickly water drains through it. This will indicate whether your soils can support a rain garden. You can test it yourself in 4 easy steps:

  1. Dig a hole 1’  deep, being careful not to disturb the sides or compact the soil in the hole.
  2. Pour 444 mL (1”) of water into the hole and let it drain completely
  3. Fill the hole with water again and place a ruler in the center flush with the bottom to measure the depth
  4. Wait 15 minutes, measure the water depth again then multiply the result by four to determine the infiltration rate. Rates of .5 to 8 inches in an hour are sufficient for rain gardens.

Next, consider the location and size of the rain garden.  The Philadelphia Water Department recommends sizing your rain garden to be 20-30% of your impervious surfaces (roof, driveways, patios, and walkways).  The rain garden should be a minimum of ten feet away from the foundation of your house and your property line and in the lowest spot of the yard. The area should have a 1% slope away from your house for proper drainage. The rain garden will need either an outflow or a drain for larger storm events to prevent flooding. Make sure that the direction of the discharge is away from your house and your neighbor’s property.

When digging the rain garden, if your soil is rich with organic matter, two to three inches of depth will be sufficient. If it’s not and you need to amend it, dig down five to six inches and add compost. Always use PA 1-Call  before you dig, to make sure you are clear of unseen obstacles underground.  Taper the edges of the rain garden toward the center to prevent erosion. 

Purple coneflower is a great choice for a raingarden.

Selecting Plants

And now for the exciting part: deciding what to plant. The funny thing about a rain garden is that most of the time, it is dry! While you might think wetland plants would be best, floodplain plants that can handle periods of inundation and drought are actually ideal. Basically, a rain garden functions like a small floodplain where water can stop, slow down, infiltrate into the soil and be absorbed by plant roots. The next question to ask is what plants are common to floodplains?

Depending on the size of your rain garden, planting a tree in it might not make sense. But if it does, a tree can be a fantastic focal point. In our region, you have a variety of native choices:

  • canopy trees: red and silver maples, sycamore, river birch, pin oak, swamp white oak, and black gum. 
  • understory: black willow and sweet-bay magnolia

Bald cypress is a great southern species, too. As our area continues to warm up, using more southerly species may be a way to increase the long term vitality of your landscape.

The shrub layer of floodplains offer a rich palette of plants from which to choose. Highbush blueberry, red chokeberry, and black chokeberry look lovely and provide edible fruit. Buttonbush, arrowwood, winterberry holly, ninebark, meadowsweet, sweet pepperbush, possumhaw, red twig and silky dogwoods offer a variety of color, texture and seasonal interest to round out a rain garden. Once established, shrubs require minimal maintenance.

Thinking of your rain garden as a habitat with niches to fill can help guide design and plant selection. Plan on a variety of heights and moisture tolerances between the center and edges. Plant low growing cool season bunch grasses for early season cover, wildflowers for summer color, and shrubs for height and fruit.

Whether you plant trees, shrubs, wildflowers, or grasses, rain gardens can provide beauty, functionality, and habitat for your landscape. Dig deeper and decide for yourself what type of rain garden fits your landscape and start helping your community by reducing stormwater runoff at home. Many small actions can really make a difference.

Willistown Conservation Trust’s Rushton Conservation Center features a rain garden designed by Jonathan Alderson Landscape Architects. It is includes sweetbay magnolia and sweet pepperbush. A variety of wildflowers and grasses were planted as plugs and seed. Swamp milkweed, butterfly weed, purple coneflower, bee balm, beardtongue, mountain mint, and asters fill the basin with seasonal color and attract pollinators all summer long. The circular driveway around the rain garden is pitched inwards to drain runoff during storms. A surface drain in the rain garden directs overflow to a nearby underground stormwater basin.

This article was originally published in County Lines Magazine – May 2020 Issue.

Filed Under: Conservation, Native Plants, Stewardship

OUR NATURE PRESERVES

Our nature preserves are open to the public 365 days per year, providing natural places that offer peace and respite for all. We will keep them open as long as it is safe to do so. While visiting our preserves, please practice social distancing and wear a mask if you encounter another person who will be closer than six feet … Learn more about our nature preserves.

Upcoming Events

22 January
Rushton Conservation Center

Community Supper Series: The Whip Tavern To-Go

Rushton Conservation Center

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23 January

Family Preserve Hike: Winter Bird Count

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27 January

Lunch and Learn: Road Salt and Its Impact on Fresh Water

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The Trust's holistic approach to land conservation, with a focus on the connections among land, farm, birds, and water, protects native habitat and provides open space for our earth to heal. Please help the Trust continue to preserve our natural world for all  generations and consider making an impactful donation … Donate Today

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925 Providence Road
Newtown Square, PA 19073
(610) 353-2562
land@wctrust.org

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