Check out the video below to see a quick method of catching eye-level SLFs.
Have you heard about the latest insect invaders? They reproduce in very large numbers, and swarms can cover entire tree trunks. They will land on your head, your shoulder, your shoe, your lap, anywhere they please. If you see one on the ground and try to stomp on it with your foot, you better be quick or it’ll hop away at lightning speed. Spotted lanternflies (SLFs) are an invasive pest, and they will be popping up all over the Philly area this year. They were already in Fairmount park last summer.
For most homeowners, SLFs are little more than a nuisance. But they can take nuisance to a whole new level. Their favorite plant to eat is Ailanthus, commonly known as tree of heaven, which happens to be another rapidly spreading invasive plant-pest. Unfortunately, SLFs also feed on fruits and have caused significant problems for some vineyards and orchards. And they feed on black walnut, maple, and willow trees, among others. Hops, cucumbers, and other crops can suffer serious damage too. (My biggest problem personally has been on my computer vines.)
I have been battling these beasties for a few years because I have a vegetable garden in Berks county, just a few miles from the location where the SLFs first came into the US (in a load of stones).
Garden and home centers are advertising a number of different control methods, including a systemic insecticide that kills bees. If you are like me—eating for the ecosystem—you want to avoid using such toxic chemicals. You absolutely have other options.
The best non chemical option is scraping off and destroying egg masses. You can do this from late September through May, but the best time to scrape is late winter (nymphs start appearing in late April). Scraping is literally just scraping, with something like a plastic card or a butterknife. Just be careful to limit damage to the bark. Most egg masses are closer to the ground in sheltered locations. SLFs will lay eggs on just about any flat surface, including deck boards and concrete blocks.
The next step is to catch any after they’ve hatched. During their life span, SLFs climb upward in trees, so sticky bands around trunks are effective in catching them. One sticky band program in PA has already caught over a million of these buggers. In order to limit the likelihood of beneficial insects and birds getting caught in the sticky band, it’s a good idea to trim the width to just a few inches. Replace the bands every 2 weeks or sooner if they fill up.
Like many insects, SLFs can be killed with organic contact pesticides like neem oil and horticultural soap. I’ve also had great results using a spray bottle of diluted (biodegradable) Sal’s Suds. But remember that these interventions are chemical and can damage plants (don’t use in the heat of midday) and other insects (spray carefully and avoid bees as much as possible). I also like to swipe or finger flick the SLFs into a container with rubbing alcohol.
The option with the least impact on other insects is to just smash the SLFs. But you need to be quick! It could be a great game for your family and friends.
An unfortunate consequence of pests like this one is how they impact our food and beverage industries. Many of us choose organic food when possible, but the most effective methods of controlling (read: killing) pests are not certified-organic. And that makes sense, doesn’t it? Something that ‘efficiently’ kills one thing is likely to be harmful to other things. Many vineyards are now faced with higher costs from more extensive pest control measures. I’m not going to condemn wine growers out of hand for trying to protect their vines. To be frank, if the more toxic pesticides—including the neonicotinoids—were only available to companies (and not homeowners), we’d have significantly less run-off and over spray and residual contamination to deal with.
At the same time, I enjoy a nice malbec or syrah, and I’d prefer my wine be organic. Contending with SLFs clearly raises costs for all affected vineyards, but is particularly rough for organic growers. Organic pesticides like spinosad and neem oil degrade quickly, requiring many more applications than conventional options like carbaryl and dinotefuran.
So let’s be informed consumers, purchasing food, wine, and garden products that align with our values, keeping in mind the underlying costs that lead to the price on the tag.
If you’d like to learn more about how you can deal with these spotted lanternflies, EFTE will gladly venture to your home for a consultation. We will teach you how to identify all life stages, as well as where to look for the eggs, the nymphs, and the adults. We will discuss the more eco-friendly control options with you, helping you craft your custom intervention plan. We will also provide you with tips and strategies for protecting your most favored plants and trees.
If you’d prefer not to be bugged by these bugs, we also provide egg mass detection and scraping services, to destroy as many as possible before they even hatch.
I started Eating for the Ecosystem because I am determined to change what we grow and how we grow it. I know we can choose plants and designs that strengthen our ecosystem, while looking beautiful and providing us with food. And we can do it affordably.
The company name arose from discussions with my husband about his second book, A Critique of the Moral Defense of Vegetarianism. One of his points matches one of my long-held beliefs: that “[h]ow plants are treated in the process of cultivating and gathering them for food matters morally” (p. 31). To me, plants are people too.
We both consider what we consume to be a moral decision, and we constantly re-examine our choices. We believe that the best metric for weighing these choices is the effect we have on our ecosystem. “[T]he world is full of people, only some of whom are human. Plants and other-than-human animals may be people, too. Moreover, we maintain a special bond with, and specifiable obligations to see to the needs and interests of, our landbase and all the people who live on it and in it” (p. 8). We have a bond with, and obligations to, our ecosystem.
Myriad factors can drive a person’s food choices, whether health effects, genetic modification, price, availability, treatment of animals, synthetic chemical use, sentience, or environmental impact. I frankly don’t care whether other people have the same diet I have. I do care whether people think about what they eat and how their food choices impact their ecosystem. And I want to make it easier for anyone to make consumption choices that match their values.
I want to encourage eating for the ecosystem: growing more food in urban settings, selecting diverse plants that support local animals and insects, turning lawns into woodlands or gardens, and using integrated pest management rather than reaching for a chemical solution. We need to do more to enhance food safety and food security for ourselves and future generations.
This post originally appeared in the Penn State Extension Master Gardener’s blog.
All vegetable gardeners want a successful harvest, and I’ve found that no time is more pivotal than the first month or so after planting. This is when our seedlings take root, and establish a strong foundation for future growth. I spend more time in my garden in spring than any other time of year, and it always pays off. Here’s a list of late spring tasks that will benefit your organic vegetable crops.
1. Attract Pollinators
Many of our vegetable plants already attract bees and butterflies, but we can supplement these with flowers like Echinacea, bee balm (Monarda), zinnias, yarrow, and sunflowers, among others. I like to grow common milkweed (Asclepias syriaca) to attract Monarch butterflies, and bronze fennel to attract Swallowtails. It’s also a good idea to include a shallow water source for the pollinators. You’ll find some more tips in my printable PDF. And if you’re committed to attracting pollinators, you could get your garden certified.
2. Protect your vegetables from critters
I live in central city Philadelphia, but my vegetable garden lives in rural Berks county (zone 6b). I see no deer or groundhogs in my Philly neighborhood, but they certainly frequent the neighborhood around my garden. The local rabbits are quite voracious as well. So I’ve installed simple 8-foot long 2×4 posts (not pressure-treated) and plastic deer fencing. I added some short galvanized wire fencing to keep the rabbits and groundhogs from gnawing through the deer fence. I’ll have to keep an eye on my fence throughout the growing season, because those critters are crafty, and just might find/dig/gnaw a way through or around my fence. Vigilance is key.
3. Weed and mulch
As they establish themselves, our vegetable plants compete with weeds for sun and water and soil nutrients. My garden is host to a seemingly endless army of thistles and wild onions. Until my vegetables are large enough to shade competitors, I need to weed frequently. I also use mulch to keep the soil moist and discourage weeds. Some gardeners use inorganic materials, but I prefer organic mulch. It doesn’t keep every weed out, but it will slowly decompose and further nourish my soil.
You might consider red plastic mulch for your tomatoes. Penn State scientists found that red mulch increased tomato harvest by 10 percent on average. To keep the weeds at bay and encourage a better tomato harvest, staple red mulch to black mulch and lay it on the ground red side up. The easiest time to do this is before you plant your seedlings, but you could also lay it after planting, and create cut-outs for your tomatoes to poke through.
4. Erect plant supports
If you haven’t yet done so, now is a great time to install plant supports. Putting off this task will leave you wrestling with large plants, and you’ll risk breaking the stems and damaging the roots. Supports are particularly important for peas, pole beans, and tomatoes. I also like to provide supports for my cucumbers, and occasionally for my pepper plants. Garden supply stores offer a wide variety of stakes, teepees, and cages, but you can also make your own. In order to keep your garden chemical-free with natural materials, choose bamboo, cedar, cypress, and jute twine. I use jute twine throughout my garden, because I can toss it in my compost pile in the fall.
5. Make frequent inspections
Organic vegetable gardening is actually really easy. The biggest time commitment comes in the spring, but the summer and fall payoff is truly worth it. Take a little extra time now to nurture the plants and help them set a strong foundation. The absolute best thing you can do for your garden now and throughout the growing season is to walk around and look at the plants. How are they doing? Are they getting enough sun and water? Do you see any evidence of disease or insect damage? Catch it early, and your plants are likely to recover.
In order to see more butterflies in your garden and to ensure good (bee) pollination for your vegetables, plant natives and use integrated pest management. This printable PDF provides tips for attracting beneficial insects.