Your guide to spring yard care this season
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This episode of Talk of Iowa delivers a comprehensive, science-backed guide to spring lawn and garden care, challenging common myths and offering practical, sustainable solutions. The central revelation? Letting grass grow long for 'no-mow May' is not only ineffective for pollinators but actually harms lawns by promoting crabgrass and thinning turf. Instead, experts advocate for intentional pollinator habitats. The episode reveals that winter damage to lawns and trees is often due to a lack of snow cover and soil moisture, not just cold temperatures. A key takeaway is that compost application in new developments can dramatically improve soil health and water retention, while over-fertilizing in spring leads to excessive mowing and nitrate runoff. The conversation also debunks the idea that clover is a good solution for dog-trafficked lawns—tall fescue is far more resilient. For persistent weeds like creeping Charlie, the solution isn't just spraying but addressing underlying shade and soil conditions. The episode concludes with a powerful message: sustainable gardening isn’t about avoiding work, but about working smarter with nature—using compost, proper mowing, and targeted interventions to build resilient landscapes that thrive without chemical dependency.
Never remove more than one-third of grass height in a single mow—gradually reduce height over multiple sessions to avoid stress.
Crabgrass preventer is ineffective after emergence; if missed, use post-emergence herbicides after the weed is visible.
Apply compost to new lawns to improve soil health, water retention, and organic matter—especially beneficial where topsoil was removed during construction.
Use slow-release or organic fertilizers (like Milorganite) and avoid quick-release types to prevent nitrate runoff and water pollution.
Remove flower stalks from rhubarb immediately to redirect energy to leaf and petiole growth, improving harvest quality.
…and 5 more takeaways available in PodZeus
Spring Lawn Care Kickoff: Mowing and Timing
Host Charity Nebbe welcomes Adam Tomes, a turfgrass specialist, to discuss the basics of spring lawn care, starting with proper mowing height and timing. The episode begins with a focus on the importance of not cutting more than one-third of grass height at once, especially after a rainy spring.
Crabgrass and Winter Damage: What’s Happened to Your Lawn?
Tomes explains that crabgrass has already emerged, making pre-emergence preventers ineffective. He also details winter kill from cold temperatures and lack of snow cover, particularly affecting tall fescue and perennial ryegrass, leading to dead spots.
Fertilizing Smartly: Timing, Type, and Environmental Impact
The episode dives into spring fertilization, emphasizing that while it helps thicken turf, overuse leads to excessive mowing and runoff. Experts recommend slow-release or organic fertilizers and stress avoiding application before heavy rain.
Compost: The Secret Weapon for New Lawns
Tomes highlights compost as a game-changer for new developments where topsoil was stripped. He explains how compost improves soil structure, water retention, and microbial health, and recommends applying it once every few years.
Grass Clippings: Nature’s Free Fertilizer
The episode emphasizes leaving grass clippings on the lawn to return nutrients and build soil organic matter. Removing them wastes free fertilizer and undermines soil health.
“You're going to end up mowing it back down. The grass is going to suffer and thin out. And then you're just going to have a big stand of crabgrass. And so that's not useful at all to anything.”
“If the whole tree is dead all the way down to the ground level, then it would be a situation where you would want to remove and replace because what you're going to get is going to be something that's going to have inferior fruit if it sets fruit well at all.”
“The key here is you're going to have to remove the plants that are there, and so I would try to do whatever you could to try to kill out the existing material that's there.”
Host
Guests
Adam Tomes
person
Charity Nebbe
person
Iowa State University
organization
Aaron Stile
person
Erin Stile
person
Milorganite
product
triclopyr
other
Pennsedge
other
home orchard spray
product
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