Friday, January 13, 2012

Favorite Trees – Casey Trees Staff members answer the question “why”

caseytrees2 Ask someone if they have a favorite tree, and many are quick to name a particular species. It often takes a little more “digging” to come up with the answer to “why”.  But since digging is one of my favorite things to do, I decided to ask around. I started with some of the staff at Casey Trees.

If you don’t know about Casey Trees, they are a  D.C.-based non-profit group  committed to restoring, enhancing and protecting the tree canopy of D.C. They plant trees,  teach other people about trees,  and work with elected officials, developers, and community groups to make sure that the population of trees in D.C. continues to grow forth and multiply. Ten years and over 10,000 trees since their beginning, it’s obvious to see that they DEFINITELY “dig” trees.

Jared Powell, Director of Communications and Development for Casey Trees helped me poll a few of their staff members to get some answers to the question “What is your favorite tree, and why?” Their answers reflect childhood memories, aesthetic admiration and respect for the environment that help to explain why Casey Trees is so devoted to helping Washington DC remain “The City of Trees.”

Native trees, which are generally better suited for the local environment, are marked with an (N)

Jared’s favorite tree: The eucalyptus, while not native to North America, has certainly made itself at home along the west coast particularly in California where I am from. Growing up, I would build forts at the base of these giants using its tessellated bark for roof materials, soak up its sweet scent emitted from its distinctive long, blue leaves and lounge in its shade on hot summer days. In short, the eucalyptus tree reminds me of home and a time when my only worry was when the end of recess bell would ring.

Marty O’Brien, COO: When I was growing up in Minneapolis in the late 1970s, there were many big and beautiful elm trees lining the boulevards in our neighborhood and throughout the city.  At some point the city came through and marked many trees with an orange “X” and soon removed all of those trees.  It drastically changed the character of the neighborhood and the city for the worse so, at about 10 years old, I realized for the first time the impact that trees could have.  We didn’t know what we had until it was gone.  So that is why I chose the American elm (N) as my favorite tree.  It was the first real connection I had with trees.

Mark DeSantis, Development Associate:  It’s not just the bursts of golden yellow leaves that dot D.C.’s streets during the fall that make the ginkgo my favorite tree – though in my opinion there are few things more beautiful to see in this city. For me it’s more their history and the fact that they’ve been around for so long that fascinate me. They are truly a relic from the past that has survived for so long – something few things in this world have managed. It’s this uniqueness that I find beautiful.

Oliver Pattison, Communications Associate: I am a fan of the pin oak (N)  because it is a great large-canopy street tree with a significant presence along certain D.C. streets. I know that oaks are not everyone’s favorite type of city tree because of concerns about falling acorns, but they more than make up for it with their beautiful fall foliage. I discovered that I liked pin oaks in particular by walking around Mount Pleasant and Kalorama Park in the fall.

Christopher Horn, Communications Associate: There are many species of oak in my home state of Kansas, but none like the willow oak (N). When I moved to D.C., I was not only amazed at how many trees there were, but also by the uniqueness of the willow oak. The tree has a dense canopy and its oblong willow-like leaves go from a bright green in spring to a beautiful yellow-orange in the fall. The willow oak is a sight to see in any season.

Sara Turner, Urban Forestry Manager: The artist in me loves sassafras (N)  for its color and three distinct leaf shapes, some simple others lobed, which make this tree's identification fun. I especially love the one shaped like a mitten resembling the state of Michigan, where I studied woody plants. In the fall, the leaves transition to striking hues of orange, red, and yellow. I am easily charmed by the spotting of Sassafras on a fall hike. 

Lisa Morris, Planning and Design Associate: Allentown, PA, where I’m from, has beautiful sycamore (N)  lined streets where the branches form an almost solid mass. These giant trees framed the streets I grew up on.

Michael Potts, GIS Specialist: The blackjack oak (N)  is a small, scrubby survivor, though one can grow very large if given proper resources. There are some small specimens at the top of Sugarloaf Mountain in Maryland, but I first came upon them as they grow natively on my family’s ranch in Texas. I loved taking walks through the forest populated by blackjacks and  post oaks. They always had a rugged appeal to me.

Tom Buckley, Director of Technical Services and Research: Having a favorite tree is a little like having a favorite ice cream.  I don’t think about it much.  But the Baobabs in Zimbabwe surprised me, as a little kid on safari.  You could crawl around inside them.  I had a tree-house, but this was a tree that could actually house you.  And they grew very large in dusty, dry climates. 

Rather than choosing one favorite tree, Shawn Walker, Urban Forestry Instructor, described the importance of following the practice of right plant/right place. In my opinion, right plant/right place is even more important than choosing natives. Choosing trees that are suitable for your property’s site conditions will generally require less water and less harmful chemicals – both of which are great for the local environment.

Shawn Walker: I chose “right tree, right place” because it’s kind of a theme around here: for a planted tree to thrive one must consider the site-specific constraints and chose a species thus suited – ‘right tree, right place’. When I came to work at Casey Trees a year ago, I was surprised that no other staff had chosen this as their favorite, so I nabbed it right away!

‘Right tree, right place’ describes a thoughtful approach to tree selection and landscape design but it also reminds us that there is room for our attitudes towards trees to be more nuanced, something more than simply ‘I like/dislike that tree’. Take the argument about native versus non-native species, for instance. I used to staunchly believe that native species should always be planted when possible. However, as I have become more aware of the threats to our urban forest from climate change and exotic pests, this bias has become somewhat murky. 

Our international trade patterns have resulted in the introduction of numerous harmful tree pests from Asia, and their potency as pests results from the fact that they are new invaders in a new land with few, if any, natural enemies to keep them in check. Of course, we should do what we can to control pests like the Emerald Ash Borer that continues its wholesale ash-murdering rampage but we can also take measures to make our urban forests more resistant to Asian pests by including Asian tree species within our palette.  The Manchurian Ash (Fraxinus mandschurica), to site a specific example, coevolved and shares native habitat with the Emerald Ash Borer, and it just so happens that it has a high degree of resistance to the pest. If we love ash trees and want to include them in our species composition, should we not consider the Manchurian Ash as one of many arrows in our quiver? Thus continues the ‘right tree, right place’ discussion…

Now that we’ve started digging, how about you. Do you have any favorite trees?

Thursday, January 12, 2012

Wood Ashes in the Garden: Good or Bad?

One of the things I love the most about cooler weather is the nice cozy fires that my husband builds in our fireplace and outdoor fire pit. Whether it’s because he is a Sagittarius (one of the fire signs of the zodiac) or just because he grew up in a campfire loving family, Tom starts building fires as soon as the temperatures begin to fall.

Needless to say, we end up with a LOT of wood ashes. The first time I cleaned out our fireplace (over ten years ago now) I piled huge buckets full of ashes into our compost pile. It just seemed somehow logical to me, putting decomposed wood back into the earth. Tom, my green-gardening guru hubby, just shook his head. Then he told me to get a shovel and he helped me dig them all back out and put them in a metal container so we could better control their use in our landscape.

I wasn’t WRONG about the nutritional value of wood ashes. The truth is that wood ashes contain most of the 13 essential nutrients that soil must supply for plant growth. The secret is just to make sure that you utilize those nutrients ONLY as needed.

When applied directly to garden soil, wood ashes will raise the pH level. This is great if the pH level of your soil is low. Not so great if the pH level of your soil is already high. In fact, over applying wood ash can cause serious imbalances in your soil.

The pH value is a measure of a soils acidity or alkalinity and directly affects the ability of plants to utilize the nutrients available to them. The pH scale ranges from 0 to 14, with 7 as neutral. Numbers less than 7 indicate acidity while numbers greater than 7 indicate alkalinity.

So how do you determine the pH value of your soil? You get your soil tested.  Getting your soil tested is an excellent way to help minimize the use of chemicals in your yard. Knowing what your yard needs allows you add only what is necessary, eliminating the possiblity of harming your yard or causing excess nutrients to find their way into our waterways.

If the pH level of your soil is low, then adding wood ash may be beneficial. Again, this depends on what you want to grow. Wood ash is beneficial to most garden plants except acid-loving plants such as blueberries, rhododendrons and azaleas.

Here are a few more facts about wood ashes, I found from searching usasearch.gov:

The value of wood ash depends on the type of wood you burn. Harwood ash has a higher percentage of nutrients than ash from softwoods.

Lawns that need lime and potassium can also benefit from wood ash but you should apply no more than 10 to 15 pounds of ash per 1,000 square feet of lawn and only every couple of years.

Wood ash is alkaline, which means you should use precautions when handling it.
  • Wear eye protection, gloves and a dust mask.
  • Do not scatter ashes in the wind.
  • Do not use ash from burning trash, cardboard, coal or pressure-treated, painted or stained wood. These materials can contain potentially harmful substances. For example, the glue in cardboard boxes and paper bags contains boron, an element that can inhibit plant growth at excessive levels.
  • Never leave wood ash in lumps or piles. If it is concentrated in one place, excessive salt from the ash can leach into the soil and create a harmful environment for plants.
  • Do not apply ash at time of seeding. Ash contains too many salts for seedlings.
Source: Wood Ashes Can Benefit Gardens and Lawns

Why do you love trees?

Trees. What's not to love. They give you shade, fruit, flowers, fragrance, firewood and so many other great things. So I'll be focusing on trees and the people who love them in my next few posts. In the mean time, why do you love trees? Answer our poll or use the comments section to add an answer of your own.

What is or would be your primary motivator for planting a tree in your yard?

Tuesday, January 10, 2012

Help Kickstart the Meadow Project

meadowproject I am so inspired by visionary garden writers who work so hard to influence others about eco-friendly gardening practices. I know, first hand, how difficult it can be to both garden AND write with the goal of encouraging others to take a little bit better care of the planet.

That’s why I love to pass along the projects and success stories of other people who work in the same field. And in the case of Catherine Zimmerman, the “field” is a low maintenance meadow.

Zimmerman is a DC based certified horticulturist and landscape designer who is accredited in organic land care. She has designed and taught a course in organic landscaping for the USDA Graduate School Horticulture program, is an award-winning director of photography, contributes to one of my favorite blogs (Native Plants and Wildlife Gardens), and has written a very cool book entitled Urban & Suburban Meadows, Bringing Meadowscaping to Big and Small Spaces.

Penny Lewis, Executive Director of the Ecological Landscaping Association describes Zimmerman’s book in this way: “Before manicured lawns, with their chemicals, mowers, and blowers, there were ecological meadows, with their butterflies, birds, and bees. Catherine Zimmerman’s Urban & Suburban Meadows reintroduces readers to the beauty and biodiversity of the meadow and reminds them of the intricate connections between wildlife and native plant communities that serve as both food source and habitat.”

I was poking around on kickstarter, an on-line fundraising forum, and noticed that Zimmerman is now working on creating an educational, documentary film to go along with the book and is looking for donations to help her get this exciting project launched! I’m excited to donate to a project that will encourage more people to cut down on their water hogging, chemical craving lawns and opt for something that attracts birds, bees and butterflies.

If you have a few dollars to spare, I encourage you to make a donation to this great project. And if you can’t make a financial donation, help a fellow meadow maven out by reposting this message for her on your own blog, on Facebook and twitter. She only has until February 20, 2012 to reach her financial goal on kickstarter.

"Kickstarter.com is an interesting fundraising website. You create an account, describe your project and set a money goal to be obtained within a specific time period. Pledges are tiered, with each tier offering different incentives. If your project doesn’t reach your pre-set (unchangeable) monetary goal in the (unchangeable) time limit, nobody pays. Backers simply can't lose — if you can’t complete the project, they don’t pay. And if you can, they get both their tier award and the satisfaction of knowing they were instrumental in seeing your project through to completion."

Monday, January 9, 2012

Cool things I've learned from twitter

If you are like me, you are a little amazed and sometimes overwhelmed by all of the great info there is floating out there on the internet. For me, one of the greatest ways to sort through everything and find what  is pertinent to me is by using twitter. By selectively choosing who I follow, I have a constant stream of thoughts, ideas and articles that add information, motivation and inspiration to my life.

The really cool thing is the way that information is passed along from one user to the next. One great bit of info or insight can be passed along to hundreds and thousands of other followers by the simple use of the Retweet! Ya gotta love that technology!

Just today, I found this great article about pervious paving in a tweet from @hcconservancy . Pervious paving is a great way to allow water to seep into the earth, cutting down on stormwater runoff and pollution.

I also found this tweet from @CanarsieBK about Roasted Balsalmic Brussell Sprouts. How yummy does THAT sound? I think @CanarsieBK is also the one that had a great tweet about growing green onions from green onions, something I have been doing ever since I read it: Growing Green Onions from Green Onions in Your Kitchen

Every day, I get great motivational quotes from @AnnTran_ such as this one that she tweeted a few minutes ago. "Just be nice, take genuine interest in the people you meet, and keep in touch with people you like." — Guy Kawasaki"

I also get my daily dose of beautiful photos from twitterers such as @screek and these that were just tweeted about by @paul_steele http://tinyurl.com/79wnsyx

And since I'm mentioning people I follow, I have to mention @DerekMarkham just because he was one of the first people I followed, years ago, and he never fails to disappoint! His twitter profile pretty much sums him up: Generally green, sprinkled with randomness & slathered with peanut butter. Father, blogger, new media fool. Good man. Skilled shoveler. Full of snark.

I could go on and on about the great info that you can find on twitter. There was a time when I thought that twitter was ONLY for people who had smartphones. Until I became a twitterer myself, I didn't realize how fun and easy and important it would be!

Anyway, if you haven't yet discovered twitter, I ecourage you to check it out. And if you are on twitter, take a look for me out there. My twitter name is @dclawngarden

Friday, January 6, 2012

20 More Benefits of Trees

I guess it has become obvious that I have plenty of things to say about trees! (Almost as much as I have to say about wildlife). But I promise, this will be my last post about trees for awhile. (Sources for stats and other info are at the end of the post) 20 More Benefits of Trees Financial and Environmental Benefits of Trees
  1. Trees increase property values: Trees add as much as 20 percent to the value of your property. Studies also show that home values are higher on tree-lined streets. MC
  2. Trees increased salability of homes: The majority of realtors surveyed believe that mature trees have a "strong or moderate impact" on the salability of homes. FCV
  3. Trees increase Tourism - 700,000 tourists visit DC each year for the annual Cherry Blossom Festival. CT
  4. Trees aid Commerce - Consumers are willing to spend 12% more in stores with trees in front of them than without. CT
  5. Trees provide Job Opportunities -Natural resource management job opportunities are growing in cities. CT
  6. Trees decrease heating bills up to 15 percent and cooling bills up to 50 percent. (DDOE)
  7. Trees Reduce Noise Pollution - Trees act as buffers against roadways and other noise producing sources by absorbing unpleasant sounds from the urban environment. PT
  8. Tree roots protect groundwater - Tree roots help stabilize soil which, if loose and prone to erosion, might be carried away by stormwater runoff. MC
  9. Tree Leaves Protect Groundwater - Researchers have found that evergreens, conifers, and deciduous trees in full leaf can intercept up to 36 percent of the rainfall that hits them. MC Trees can keep 35,625 tons of sediment per square mile from entering waterways every year! DC.gov
  10. Trees recharge groundwater - Tree roots help to move water from the surface into deeper layers of the soil. This helps recharge the groundwater supply. MC
  11. Trees create organic matter on the soil surface from their leaf litter. MDNR Natural organic matter helps eliminate the need for chemical fertilizers
  12. Trees provide screening; increasing privacy and reducing the impacts of lights FCV
  13. Trees provide a wind break during winter. MDNR
  14. Trees provide Healthy Air - The trees of Washington filter 540 tons of harmful, health-threatening pollutants from the air each year. CT One acre of trees absorbs enough carbon dioxide every year to offset 26,000 miles of automobile exhaust! dc.gov
  15. Trees give off oxygen that we need to breathe.
  16. Trees provide Cooling Shade - Trees provide shade and give off water vapor to cool the city in the summer. Homes shaded by trees have 10-30% savings in air conditioning costs compared to homes without shade. CT
  17. Trees strengthen neighborhoods: When neighborhoods are full of trees, residents spend more time outside mingling with neighbors—building personal ties, stronger communities, and a greater sense of well being. MC Strengthening neighborhoods means people stay closer to home, which reduces environmental strains of commuting.
  18. Trees improve air quality by removing small pollutant particulates (i.e. sulfur dioxide, ozone, etc.) (DDOE)
  19. Trees reduce greenhouse gas emissions by taking up carbon dioxide (DDOE)
  20. Trees mitigate the urban heat-island effect by shading our homes and streets. Urban and suburban temperatures are 2 to 10F (1 to 6C) hotter than nearby rural areas. (DDOE) For more information : Sources: Casey Trees (CT) Montgomery County Department of the Environment (MC) District Department of Transportation (DDOT) District Department of the Environment (DDOE) Fairfax County Virginia (FCV) DC.gov District Department of Transportation (DDOT) Maryland Department of Natural Resources (MDNR) Plano Texas (PT) Bowling Green Kentucky (BG)

George Washington University wins grant for GroW Gardens

George Washington University’s GroW Gardens has been providing fresh food to underserved Washingtonians since 2009.

And thanks to a new $10,000 grant from Nature’s Path, an organic food company, the community garden will be enhanced and expanded in order to serve more people.

The GroW Garden projects, which has its main location in Foggy Bottom on H Street between 23rd and 24th streets and a second location on the Mount Vernon Campus, is one of three grant recipients of this year’s Nature’s Path Gardens for Good Program. The program is designed to provide funding to further organic community feeding programs.

Click here to Read more

Lewis Ginter Botanical Garden Class Schedule

Fellow blogger Judy Thomas, author of the Central Virginia Organic Gardener Blog, loves Lewis Ginter Botanical Garden. She writes about the Botanical Garden often on her blog and has recently started taking some of their classes. Here is one of her posts, entitled Documenting Your Garden,  with some sketches she did while taking  botanical illustration courses at Ginter.

Judy thought that some of our readers might be interested in the schedule of classes at Ginter so she asked me to pass it along.

Here are some of their upcoming classes:

Spring Pruning for Shrubs / February 11

Beekeeping for Beginners / February 18, 25, March 3, 10 plus a field trip, date tbd

Planning and Designing a Kitchen Garden / February 23, March 1

Worms:  The Ultimate Disposal            February 23

The Dirt on Soil:  The Life under Your Feet / February 25

Vegetable Gardens the Organic Way /  March 8

Register on line or call.  LGBG is located at 1800 Lakeside Ave., Richmond VA 23226 (804) 262-9887

Here’s a link to Lewis Ginter’s full Classes and Course Schedule.

And don’t forget to check out Judy’s blog, as well as her great podcasts.

GardenWise 2012 - Worth the Trip

It's a bit of a drive, but the GardenWise 2012 Workshop in York, Pennsylvania on Saturday, March 10th 2012 , from 8:00am to 3:30 pm, looks like it might be worth the trip.

Susan Reed, author of the award winning Energy-Wise Landscaping Design, will share ideas and tips you can easily incorporate into your landscape.

Dr. Michael Raupp from the University of Maryland will take you on a fascinating journey to learn “why bugs and plants make the world go round”.

In between you can attend sessions on growing vegetables sustainably, using cover crops in the garden, heirloom and open pollinated plants, biorational pesticides and beneficial insects, or native plants and their role in garden design.

Early bird registration (on or before February 21) is $49.00 and includes a full day of gardening talks, handouts, continental breakfast, and lunch. To register, call Kelly at 717-840-7408 and request a GardenWise brochure. Or go online to http://extension.psu.edu/york. Register early, as space is limited.

Friday Fun - Create a #natureverse

I was standing outside, feeling my morning dose of awe and wonder that nature always seems to provide, and I decided I would come in and try to stir up some shared awe.

So I came up with a short free form poem about what I felt outside, came up with an unused twitter hashtag for it, (#natureverse) and decided to see if I can encourage others to write their own natureverse.

Go outside. Stand still and look around until you become inspired. Then come tweet what you felt. Make it short enough to include the hashtag #natureverse and save room for your twitter name and an @RT if you want others to be able to share it.

Here is mine:
As I stood, silently watching the morning unfold, I saw the sun glisten off a single strand of spider silk and I felt peace. #natureverse

Have fun!

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