Welcome to the first installment of our Monthly Garden Maintenance Series, where we explore timely tasks and insights to keep gardens thriving throughout the year. As we head into October, it’s time to think about one of the most essential – and often overlooked – aspects of garden care: fall fertilizing.
🍃Why Fall Fertilizing Matters
Many homeowners and even some professionals think spring is the time to fertilize. And while spring certainly has its role, fall is arguably the most important fertilizing window of the year—especially for turf, shrubs, and hedges. Think of fall fertilizing as a way of tucking your landscape in for the winter with the nutrients it needs to rest, recover, and come back stronger next spring.
🌾 Turf Care: Aerate, Dethatch, Overseed, Fertilize
Cool-season grasses in particular benefit from a comprehensive fall care regimen. October is the sweet spot for turf maintenance in most regions:
- Core Aeration allows oxygen, water, and nutrients to reach the roots, especially important after a season of heavy use or compaction.
- Dethatching removes the thick layer of organic debris that can prevent air and nutrients from penetrating the soil.
- Overseeding takes advantage of cooler temperatures and increased moisture, helping to fill in bare patches and build a thicker, healthier lawn.
- Fertilizing in the fall strengthens root systems, improves color, and gives turf the reserves it needs to green up early next spring.
📅 A well-timed slow-release nitrogen fertilizer will provide energy for root development without forcing top growth, which is less beneficial going into winter.
🌳Don’t Forget the Shrubs and Hedges
While turf often gets the spotlight, shrubs and hedges also benefit significantly from fall fertilizing. After a long growing season, many woody plants are depleted and in need of nutrient replenishment.
- Fall feeding helps build energy reserves in roots, which supports healthier spring growth and bloom.
- Use a balanced, slow-release fertilizer or compost-based amendment depending on the plant type and soil conditions.
- Avoid high-nitrogen fertilizers late in the season, as they may encourage tender new growth vulnerable to frost.
✂️ If your clients have formally clipped hedges, fall is also a great time to shape them for the final time before winter, ensuring a clean and tidy look through the dormant season.
🍂The Leaf Debris Conversation
As the trees begin their annual shedding, it’s the perfect time to check in with your clients about their leaf cleanup preferences.
Some clients prefer ultra-neat beds, while others are happy to let nature do her thing. Either way, it’s important to differentiate between helpful and harmful leaf litter:
- Healthy leaf debris can be left in place to naturally decompose, enriching the soil and providing habitat for beneficial insects.
- Diseased or insect-infested leaves should be removed promptly to prevent overwintering pathogens and pests from taking hold.
🦠 It’s a small but essential preventive plant health practice—and a great conversation to have now, before heavy fall drops begin.
🍁A Final Note
Fall is a time of transition in the garden—and a time to invest in the season ahead. By fertilizing turf, shrubs, and hedges now, and taking a mindful approach to seasonal debris, you’re not just cleaning up—you’re setting the stage for a healthier, more resilient landscape in spring.
Let’s keep growing,
Lauren Cook
Mazra’a Gardens
Garden Design & Consultation
