Tagged with "Pest management"
This is part of a series with Gardenista, which ran on October 20, 2023.
Photo: A detail of a planting in the Bosque garden, designed by Piet Oudolf. Oudolf created a horticultural master plan for The Battery in 2004. Rich with texture, color, and fragrance, the gardens are filled with perennial and native plants designed to be enjoyed year round.
For two decades, The Battery has been a model for public parks and sustainable horticulture in New York City and beyond, proving that what we work toward at Perfect Earth Project is possible—and beautiful: You can plant drop-dead gorgeous landscapes for biodiversity. You can care for these perennial gardens, which are designed by a world-renowned designer, without any toxic chemicals—and do it for decades. You can create and plant a playground to handle floods from ever-frequent storms. You can nurture old-growth trees. You can grow an organic farm right in the middle of downtown Manhattan and use it to teach and feed people. You can do all of this while welcoming millions of people 365 days of the year—for free.
The powerhouse behind The Battery is Warrie Price, the founder of the nonprofit Battery Conservancy, which “designs, builds, maintains, and activates” the park. It doesn’t surprise me at all when autocorrect changes “Warrie” to “warrior.” She’s been a beloved and fierce advocate for conservation and sustainable horticulture for decades. “I think we have done an extraordinary project that began so small, but then really took off because how can you not want to keep making things beautiful?” she says. “At The Battery Conservancy, we like to say we’re ‘devoted to wow.’”
Price shares her thoughts about The Battery.
How did The Battery Conservancy begin? How did this park come to be the beloved place it is today?
I was asked by Betsy Barlow Rogers to create a nonprofit for The Battery. The park had a master plan created by landscape architect Philip Winslow, who sadly died before the project could begin. But Betsy said make sure you’re in accord with it, because if you can't visualize, if you can't be excited to implement it, then it’s going nowhere. The master plan is the skeleton of the park, the guidelines. But there was no horticulture, no horticulturist on the team at the time, no playground, no bikeway, no urban farm. Still, it provided the guidelines, and we review it every time we make a change in the park. After reviewing and embracing the master plan, I created The Battery Conservancy. We started with the promenade. We hired Piet Oudolf, who was not well known here at the time. He created a master horticultural plan. I think his genius is bringing the natural world into this romantic environment. In 2003, Piet first designed the Garden of Remembrance after 9/11 to honor those we lost, those who made it home safe that day, and those who would come later. It was created by private funding and a whole lot of volunteer hands. We’ve been able to enjoy them for 20 years, but they’re now about to go through reconstruction with the changes to the park. [Oudolf’s other contributions include the Bosque gardens, woodland plantings, and the bikeway.]
I think from the beginning, I wanted to make the park its own destination, not just a passageway. It was important to me personally because of its rich heritage.
What do you need for a successful garden?
When you’re planning a garden, whatever type it is, you need two things to ensure its success: authenticity and a program for how you’re going to use it. First, you have to be authentic to the landscape. Take the time to understand the history of the land, its topography, geography, and soil. Then, the second thing you need is a program, visualize how you’re going to use the space. If you don't have a program, if you haven't visualized how you want to be there, enjoy it and be a part of it, you're going to have a failed garden.
Why are public parks and gardens important to city life?
Beauty never stops healing the soul, and gardens are beautiful: green gardens, multi-color gardens—all plant life. Also, public parks and gardens in cities are unexpected, so they're cherished. They get people to stop because there is always something of interest happening, especially in a perennial garden. When you come to The Battery every week, you'll see the gardens change and evolve.
Our goal at The Battery is to enhance life mentally and physically. When you physically walk through the gardens, you interchange with nature. Mentally there’s a quiet sense of what beauty does to get your mind concentrating on something. That's an additive to good health and a good feeling versus dealing with the stress and the problems that surround you in a very urban setting.
Why was it important to be toxic-free from the start?
I learned a lot about conservation from Mrs. Johnson. [Price was college roommates with Lynda Johnson Robb, daughter of President and Lady Bird Johnson (or Mrs. Johnson as she called her), and lived at the White House for a time. She helped Lady Bird Johnson found the Lady Bird Johnson Wildflower Center in Austin, TX, where she is also a founding director.] When we started the Battery Conservancy, I always thought, no pesticides, no herbicides. We’re small. We can afford to pull our weeds ourselves. We can think of other ways instead of chemicals. For example, we’ll use integrated pest management like beneficial nematodes instead of toxic sprays. Nature has remedies if you’re knowledgeable. We worked with Rutgers to pick the best turf blend for the lawn we do have. We love our nitrogen producing clover in the lawn. The parks department found our perennial gardens to be much more economical than cutting hedges and mowing lawns all the time. We have a slogan: plant our parks. We want to set a standard for both public park design and maintenance. The gardens here are the essence of what the park is.
Thanks to the efforts of Warrie Price and The Battery Conservancy, cracked and barren blacktop was transformed into a perennial haven planted for biodiversity and beauty—and always taken care of without toxic chemicals.
What are you doing for biodiversity?
We’ve been working with Audubon NYC and now have more birds in the park than ever before. We leave seed heads during the winter and have planted different types of ornamental grasses and habitat. We’re a destination for migratory birds. They're so beautiful, and they bring such life. We're also a Monarch Waystation [A habitat designated by Monarchs International that supports migration and reproduction of Monarch butterflies]. We’ve planted milkweed. They also feed on Agastache and other flowers as they make their way south. We’re feeding them along the way.
We have also decided to support our native bees as much as possible. We will no longer be hosting European honeybee hives in the park because we know our native bees need uninterrupted space for themselves. Bees are great communicators of life. They give hope when you see their populations increasing.
We want everyone to “leave the leaves'' instead of throwing them away. They fertilize the lawn and become habitat for insects during the winter. And then of course, we’re toxic-free. We cultivate everything—our urban farm, forest farm, all the gardens, lawn maintenance—without chemicals and always have. We can all be conservationists.
What are the challenges of having a public park during climate change?
The evolution of The Battery is always about change. We have to adapt to the garden’s needs—and those needs change. I would say every 20 years the needs must be re-evaluated and adapted. We certainly see this now.
For a thousand years, there has been the relationship of landscape to water. As I mentioned earlier, we’re about to go through some changes. The promenade is being totally rebuilt. It will be elevated six feet to handle rising sea waters from climate change. There will still be the Gardens of Remembrance, they’ll just be different. They will be more like embankment gardens because everything will be raised up high and you'll walk up to the promenade versus down to it the way you do now. We hope the project will be completed by 2026.
We recently completed a playscape, which was designed after Hurricane Sandy, to flood and recover. Instead of ignoring this flood prone area, we reimagined it for play. We want to be a model for waterfront flood prone areas all over the world. Come talk to us about creating bioswales and reserve tanks under climbing structures and climbing mounds. Ask us about designing with salt-tolerant plants that like wet soil. A couple of weeks ago when we had a deluge of rain from a storm, the playscape didn’t flood. We don’t want municipalities to leave these areas dormant. We've learned a lot. We're now able to share that knowledge with others.
For so long this park was all about water gazing, to paraphrase Melville, and now it's a landscape about learning. It's a landscape to impart so much knowledge through our gardens, through our biodiversity, through our birds, through our bees. They’re all telling great stories. I think about the evolution of how we are today, how our “learning landscape” has evolved through our programing. This transformation, these 30 years of designing and rebuilding, we now have this transformed landscape of 25 acres, and gardens and horticulture—no pesticides, no herbicides have been a huge part. We continually say no to things that were very much part of traditional park management.
Do you have a favorite time in the garden?
I love the beginning of the morning. The light is so magnificent because it reflects off the waters. But then the sunsets are fabulous, especially now. I also adore being by the fountain in the middle of a warm day. I watch all the children playing surrounded by plants—the coolness of the shade and the refreshing water sprays. I’m happiest when I see the way people interact with the garden—especially the children. I think, you know, it worked. The people make the programs come alive. We’re free to the public and open 365 days of the year, 24 hours of the day. And the impact is so much bigger than just us. It's so much bigger than downtown. It's so much bigger than any other park. Gardens are beautiful. You can never underestimate the power of beauty on mental and physical health.
This interview has been edited and condensed for clarity.
The densely planted gardens are magical in fall.
Photos: Courtesy of The Battery Conservancy
Radicle Thinking by Edwina von Gal
We do love beech trees: American, European, copper, weeping. They are all magnificent. Their impressive size and gnarly solidity stand out for permanence and imperturbability. But, they are not invulnerable. Along with the many challenges all plants are facing, beeches have more than their share of problems, including phytophthora fungus, beech bark disease, and now the mysterious and deadly beech leaf disease.
While phytophthora fungus and beech bark disease are fairly well understood and treatable with non-toxic natural processes, beech leaf disease has all of us PRFCT land care types thinking hard about what to do when beloved trees become afflicted. The cause, now identified as a nematode (microscopic worm), is not well understood. As a result, no one knows the best way to control it. The main option being offered to treat it, though, is a chemical fungicide called Broadform, which is highly toxic to people and pets and lethal to beneficial organisms. It is so toxic that New York State Department of Environmental Conservation (DEC) had to make a special dispensation to allow its use for residential ornamental plants. And, yet no one knows if it will even be effective. Is it worth it to bend our resolve and put our children and pets in harm’s way to possibly keep a treasured tree holding on until we know more about the disease and have better solutions? I don’t know. I can only suggest that people make their own decisions based on as much unbiased (no income potential) input as possible until we learn more. I will update you as I find out more about this disease.
But there is another part of this story I am thinking about: the woolly beech aphid. Also known as the boogie woogie aphid, it is a fuzzy, sucking insect that lives on the underside of beech leaves and “dances” by raising its hind legs when threatened. (Watch them boogie down here.) It is harmless to all beeches, but a nuisance to humans because of the large amounts of clear, sticky “honeydew” produced. This gooey sap (aphid poop) drips on objects below (cars, benches, you) and then attracts an unsightly, but also harmless, dark “sooty” mold. Since these aphids don’t hurt the tree, I let them be, waiting for predators to show up and feast on them and reduce the goo. But this year I’ve been asking, where are the predators?
Right now, woolly aphids are far more numerous than normal, which is not surprising. When host plants become weak from causes such as disease, pests, like aphids, thrive because it is easier for them to get their sucking parts through struggling cell walls. Beneficial insect predators (lacewings, ladybugs, hoverflies, and parasitic wasps) typically show up when aphid populations are large enough to attract their attention. They feast, multiply, knock back the aphids, and then move on when there isn’t enough left to eat. It can take a season or two for this natural, balanced prey/predator food cycle to complete.
The problem with this year’s woolly beech aphid infestation is not just that the beeches have been weakened by problems like beech leaf disease, but that predator population numbers are also alarmingly low. The ladybugs, lacewings, and other hungry friends just aren’t showing up. Can their dwindling populations be a consequence of widespread spraying for ticks and mosquitoes? All insecticidal sprays, even the “organic/natural oil” ones, kill. They don’t just kill ticks or mosquitoes. They also kill the bugs—butterflies, lacewings, bumblebees—we love and need. When people resort to chemicals to control pests, they destroy the food sources for beneficial insects, which eventually destroys the beneficials themselves. The cycle of natural pest control is broken.
My request to you is: Put down those insecticidal sprays. Nature, if given time, can take care of pests—if we can be patient and let them. There’s always something that will eat the pests we wish to control. Waiting and thinking before acting always brings new observations, insights, and a peaceful interaction with our natural world. While I’m waiting and observing, I will take my hose and simply wash off just the aphids on the branches that hang over my picnic table and leave the rest for the food web.
Quote: “When you surrender, the problem ceases to exist. Try to solve it, or conquer it, and you only set up more resistance.” —Henry Miller, A Literate Passion: Letters of Anais Nin and Henry Miller 1932-1953
Book: Changes in the Land: Indians, Colonists and the Ecology of New England by William Cronon
Rebecca McMackin recently recommended this book. It is a seminal work, which opened the environmentalist conversation about indigenous land management practices and sustainability. A seriously thought-provoking history of land use and resource management, it raises so many questions about preconceptions of what was and what we are doing now.
Woolly Beech Aphid photo by Haruta Ovidiu, University of Oradea, bugwood.org
If you use a landscaper for the maintenance of your property, the beginning of the year is contract renewal time. Of course you are probably starting this year anxious about your health and the environment and you aren’t sure whether signing up for a weekly dose of noise and poison in your yard is the best thing to do. It just doesn’t quite feel right, which adds to your eco-anxiety. But instead of worrying more, you could use this moment to do good. Guaranteed good for the environment, and super healthy for you and your family.
You just need to ask your landscaper to do things a bit differently by switching to nature-based practices. He/she may not know how, and chances are, you don’t know either. So who does know? Sadly, there are very few nature-based landscapers, and there probably isn’t anyone better for you to hire than the one you have got. So unless they flatly refuse to try, don’t fire them. Let’s engage and train the ones we’ve got, and send the message out that this is the future of land care. It is healthier for them too.
Everything you need to get started is in our PRFCT LeafLet Basics of Nature-Based in English and Spanish. For a typical annual maintenance schedule, which you can use as the basis of your new contract, go straight to page 21 – review it with your landscaper. It should not cost more, there are no products to purchase.
What is nature-based? Here’s the nutshell: Healing, not Harming. Let nature do the nurturing.
- No toxic fertilizers or insecticides. Fertilizers overstimulate plants and make them susceptible to disease. The right plant for your soil, doesn’t need them. Insecticides are not target specific, they kill beneficial insects and soil organisms. You don’t depend on your landscape to eat, so why not share it with a host of wonderful life forms that could find refuge there?
- Retain, recycle and reimagine all biomass. Keep what your property produces (grass clippings, leaves, twigs, weeds, etc.) and feed it back to the soil. It is the food your place made for itself. Better than anything you can buy, and without the carbon footprint. (See PRFCT Lawn Basics for more).
- Plant at least 2/3 native plants. Plants did fine without us humans for eons, so if you plant the ones that evolved in your conditions, they will still be fine with very little from you. Plus, they provide just the right food and shelter for local birds and pollinators. (See 2/3 for the Birds for more).
- Avoid and remove invasive plants. Get to know which plants are invasive. (See the Invasive Plant Atlas for more). Don’t buy them. Remove and replace any you have already got. (See Beyond Pesticides for more).
- Water properly. Very seldom. Very deep. Over-watering is one of the most common landscape malpractices. It leads to a wide range of plant and soil problems and promotes tick and mosquito populations.
- Minimize pruning. Every cut is a wound. Plant with plenty of space for trees and shrubs to grow to their natural shapes. Leave deadwood and standing dead trees, unless positioned dangerously, they provide unique food and nesting opportunities.
- Relax and enjoy. Your landscape is not your living room; forcing it to be tidy, clipped, and fixed in time is “dead room.” Let it be alive; always changing and creating new surprising delights for you.
Keep in mind, your landscaper doesn’t necessarily know any more about this than you do. So make sure he/she understands that this is an adventure in earth friendly relationships and as long as they are willing to truly commit to the practices, you will be happy. It is a whole new way to relate to your land.
Hooray, eco-anxiety reduction in action! You are doing something unquestionably good for the earth. (Not to mention yourself, your family, and your pets). Once you get started, you will find there was nothing to fear. It is all fascinating, joyous, and beautiful.
If you encounter some problem that makes you want to give up, contact me: firstname.lastname@example.org
Suggestion: Watch as your nature-based landscape supports more and more birds and pollinators. Start recognizing and recording them on iNaturalist and eBird, and become part of a global network of citizen scientists.
Next month: Help me prepare for Biomass Part 2. Send me your composting concerns. If you aren’t composting, why not? If you are, what worries you? Write me: email@example.com
Bonus: All you ever wanted to know about climate change.
Photo by Allan Pollok-Morris
If the dire news of the climate crisis is making you feel overwhelmed, why not make some promises to a piece of earth. If everyone made their property, or one they frequent, into a natural refuge, there would be much less to worry about.Here are some of our promises…send us one of yours.
1. I will think of my place as my friend, my family. I will work with, not against it, and do it no harm. It will be a sanctuary.
2. I will let this place keep all that it produces: no biomass will leave the property.
3. I will make a compost pile, even if I probably won’t turn it.
4. I will carefully consider everything I bring here—can it be used for a long time, can it be composted or repurposed, does it really need to be plastic?
5. I will use no toxic synthetic chemicals.
6. I will take a moment to learn about an insect before I decide if I really need to kill it.
7. I will plant native plants to provide habitat for insects and birds.
8. I will get to know the names of all the plants, animals and insects that live in this place, or at least the big ones.
9. I will reduce the size of my lawn to just what gets used.
10. I will let go a bit, let nature be my collaborator, and help me keep my promises.
A friend called recently to ask for our opinion on a backyard situation. A large number of caterpillars were descending from webs in a tree and nibbling on his plants. He called in a tree expert who recommended that the offending tree be cut down and removed. Was this truly the only way to manage the problem?
Happily, we could tell him to do nothing: keep the tree, and not to worry about the plants. The caterpillars are Fall Webworms, whose webs start showing up in late summer.
The parents are pretty little white moths. They are native to the US; highly prolific, they lay their eggs in sunny spots on a large variety of host trees. The eggs hatch into the “worms” which weave the nest (same as silk worms). The nests protect them from predators, but they must come out to eat more leaves.
As it is late in the growing season, the leaves they eat have already done their photosynthetic job and losing some of them to the webworms is no real loss to the parent plant. Many of the caterpillars will in turn become food--for birds and predator insects who need the protein for migrating or overwintering.
So, just let them be.
Sadly, the people who don’t know about all this may be spraying, pruning, or even chopping down a whole tree. Compare that to what a few little caterpillars can do.
Note: Our last tip mentioned that milkweed doesn’t provide resources for anything but Monarch butterflies. This is not true, there are a large number of butterflies, bees and insects that benefit from milkweed, and I was quickly brought to task by some of our well informed readers, many thanks to them. Here’s more https://www.xerces.org/wp-content/uploads/2008/06/Wings_sp11_milkweed.pdf