Do You Want Hedgerows?
Audio Brief
Show transcript
SUMMARY:
Can planting a simple row of shrubs really eliminate ninety percent of your crop pests, or is social media lying to us? Host Jesse Frost explores the reality of farm hedgerows, drawing on scientific research and hands-on experience from his own land and Assawaga Farm. By the end of this episode, you will know how to design multi-functional, income-generating native barriers that truly protect your crops.
Do not believe the online hype about instant pest elimination. While viral videos claim native hedgerows wipe out ninety percent of garden pests, scientific research reveals a much more localized reality. Studies show that these plantings do successfully boost populations of predator insects and beneficial wasps, but their pest-fighting powers only reach one hundred to two hundred meters into your crop fields.
These living walls do far more than just attract bugs. They act as sturdy windbreaks that shield delicate plants and irrigation lines, while also casting gentle shade to help cool-weather crops like summer lettuce survive the heat. Think of them as a natural windbreak and shade microclimate for your sensitive crops.
Your ecological borders can become active cash crops. You do not have to sacrifice valuable growing space for purely aesthetic plants. Jesse Frost notes that you can plant profitable perennials like elderberries, Juneberries, sassafras, and hazelnuts. You can also treat these mature shrubs as mother plants, taking propagation cuttings to sell directly to other gardeners. Try planting edible or propagative species in your borders to offset the labor costs of these non-production biodiversity zones.
Native species survive when annual crops shiver and die. Extreme weather events can instantly wipe out a season of annual vegetables, but native shrubs are built to endure. Because these perennial plants have deep, established roots, they can survive sudden, deep freezes. This resilience guarantees that emerging early-season pollinators still have a reliable food source even when your main crops fail.
Stop yourself from rushing into permanent plantings. It is tempting to plant your dream perennials on day one, but farm layouts and water systems almost always change over time. Instead, plant annual flowers in your designated border zones for the first few seasons to observe the wind, water, and daily farm flow.
Clear your target area by tarping it for a full twelve months to kill off weeds, then apply cardboard, compost, or heavy wood chip mulch before planting. When you are ready to buy, bypass generic online plant lists and consult a local native nursery to find cultivars adapted to your exact soil and climate. Tarp your future planting zones for a full year so your young perennials can establish without heavy weed competition.
Remember to design your borders slowly and prep the soil thoroughly. It is all about doing something incredibly unnatural and trying to replicate nature as much as possible.
Episode Overview
- Host Jesse Frost explores the ecological benefits, practical challenges, and establishment strategies of hedgerows in market gardens, drawing on scientific research and first-hand experiences from his own farm and Assawaga Farm.
- The discussion covers the realistic impact of hedgerows on pest control, debunking exaggerated claims while highlighting proven benefits like wind breaks, shade, and beneficial insect habitats.
- This episode is ideal for market gardeners, small-scale farmers, and permaculture enthusiasts looking to integrate native perennials and functional biodiversity into their land design.
Key Concepts
- Realistic pest control: While social media claims suggest native hedgerows can eliminate up to 90% of pests, actual research indicates a more modest, localized reduction. Hedgerows successfully increase the population of predator insects and parasitoid wasps, but their pest-control benefits generally extend only 100 to 200 meters into adjacent crop fields.
- Hedgerow multi-functionality: Beyond attracting beneficial insects, hedgerows serve critical physical roles on a farm, including acting as windbreaks to protect delicate crops and irrigation systems, creating shade microclimates for cool-weather crops like summer lettuce, and filtering diffuse light to lower crop tiers.
- Economic opportunities: Hedgerows do not have to be purely ecological or aesthetic; they can feature marketable perennial crops such as elderberries, Juneberries, hazelnuts, and sassafras, or serve as mother plants for taking propagation cuttings to sell.
- Native plant resiliency: Native perennial shrubs and trees in a hedgerow possess deep-rooted resilience to extreme weather events, such as unseasonal deep freezes, ensuring that emerging early-season pollinators still have a reliable food source even when annual crops fail.
- Implementation patience: Because farm plans, plots, and water systems change over time, establishing hedgerows should be a gradual, observant process rather than an immediate, permanent installation.
Quotes
- At 2:41 - "As much as I'd love to believe that to be true as well, 90% is not true, or at least it's a little misleading or unprovable." - Explaining why farmers must look to nuanced scientific studies rather than exaggerated social media claims regarding pest reduction.
- At 8:00 - "I've learned over way too many farms that I've had that things and plans change, so we tried not to go too crazy with the hedgerows when we first started the gardens." - Reflecting on the importance of designing agricultural spaces with flexibility in mind.
- At 19:35 - "It's all about doing something incredibly unnatural and trying to replicate nature as much as possible." - Capturing the inherent philosophical contradiction of farming and how hedgerows help bridge the gap.
- At 21:59 - "It's hard to commit that kind of time to farming because there's no direct link to sales, but we do plan to sell these at our plant sale as native plants or take cuttings." - Highlighting how farmers can offset the labor costs of non-production biodiversity zones by finding creative revenue streams.
Takeaways
- Design your hedgerows iteratively by planting annual flowers in designated zones for the first few seasons to test the farm's layout, wind patterns, and water management before committing to permanent, expensive perennial shrubs.
- Prioritize thorough site preparation by tarping the designated hedgerow area for a full year to eradicate weeds, followed by applying cardboard, compost, or heavy wood chip mulch to ensure the young perennials can establish without heavy weed competition.
- Consult with a local native plant nursery rather than using generic online lists to identify specific, indigenous cultivars that match your exact climate zone, soil type, and target beneficial insect species.
