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Lawn Care

The Ultimate Guide to DIY Lawn Fertilizer

Lawn envy is a real thing. The truth is any beautifully-green lawn is a result of good lawn fertilization. This is the guide that will get your neighbours asking you for tips on your beautiful lawn.

Last Update:

January 8, 2024

Written By:

Andrew Huber

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Ever wondered how to get that lush, deep green lawn without breaking the bank? I've got the scoop on DIY lawn care that'll turn your yard into the envy of the neighborhood. Fertilizing your lawn is key, and I'm here to guide you through the process, ensuring you get those perfect green results you're after.

In this guide to doing your own lawn fertilizer, I'll reveal the information behind choosing the right ingredients in fertiliser for your grass. From natural options like compost and bone meal to high-quality products, you'll learn how to nourish your lawn effectively and eco-consciously, and cost-effectively.

What's the Point of Lawn Fertilizer?

Fertilizer is not just about making your grass grow t's about nurturing a landscape that can withstand the tests of nature and time. A robust lawn is your first defense against pests, diseases, and environmental stresses. So, let's explore the vital processes that benefit from proper fertilization—starting with root and leaf growth.

Root Growth

The hidden half of your lawn's success lies beneath the surface—its roots. Phosphorus plays a crucial role in enhancing root development. This nutrient is essential, especially for a new lawn that is establishing its roots. If you've been wondering why your grass isn't as robust as you'd like, a lack of phosphorus could be the culprit.

Roots are the lifelines of your lawn. They anchor the grass, absorb water, and take up vital nutrients. When I apply a phosphorus-rich fertilizer, I give those roots a helping hand, enabling them to reach deeper into the soil. This doesn't just translate to a healthier lawn; it means my turf has a better chance of surviving tough conditions like drought or extreme cold.

Many DIY lawn caretakers miss this critical step, focusing solely on what's visible. But I know that nurturing root growth ensures that everything above ground will have a stronger foundation to thrive.

Leaf Growth

If roots are the foundation, the leaves are the facade of my lawn's health. Nitrogen is the driving force behind that lush, deep green canopy we all strive for. It spurs the rapid growth of grass blades, giving lawns that vibrant look which can seriously boost curb appeal.

But here's the deal: too much nitrogen can lead to overgrowth of foliage, making grass susceptible to diseases and more dependent on water. That's why I'm meticulous with timing and quantities. For instance, my fertilizer schedule ramps up when soil temperatures hit 55º Fahrenheit, usually from March to mid-April, to jumpstart leaf growth in spring.

By feeding my lawn the right amount of nitrogen, I encourage the kind of growth that results in a dense turf, robust against foot traffic and capable of crowding out those pesky weeds. It's not just about good looks; it's about creating a sustainable environment that supports healthy grass rejuvenation year after year.

In balancing lawn care, it's these nutrients—pivotal for root and leaf development—that act as the building blocks. They're what transform a mediocre yard into a verdant, thriving landscape. I don't understate their importance and neither should you. Each granule and application is a step towards a more resilient and bountiful lawn that's ready to face whatever nature throws its way.

Types of Lawn Fertilizer

Considerations for Choosing the Right Fertilizer for Your Lawn

When I'm picking out a fertilizer, I first take a look at the type of grass in my yard and the current season. Knowing whether I've got cool-season or warm-season grass helps me match my lawn's needs with the right nutrient balance. I also consider my USDA hardiness zone to be sure I'm in sync with the local climate. For instance, with fall approaching, I'd opt for a fertilizer with a 20-8-8 mixture which supports healthy growth leading into winter.

Timing is another factor I don't take lightly. Applying fertilizer right before a heavy rain could wash away all the nutrients before they have a chance to do any good. I also steer clear of over-fertilizing since it can lead to excess nutrient runoff, potentially causing harm to nearby waterways.

Chemical vs Organic Fertilizers

In my experience, deciding between chemical and organic fertilizers boils down to my lawn’s immediate needs and my environmental considerations. Chemical fertilizers give a quick nutrient boost perfect for a lawn that needs attention fast. Organic options, on the other hand, improve soil structure over time while reducing my carbon footprint.

Both types have their place in lawn care. Chemical fertilizers tend to be more precise in nutrient content, offering specific ratios needed for particular grass types. Organic fertilizers are more about gradual, long-term health; they release nutrients slowly as they break down. If I had to choose, I’d often go for a combination to get the best of both worlds: quick improvement and sustainable health.

Liquid Fertilizers vs Granules

Liquid fertilizers and granules have distinct advantages, and knowing when to use each type can make a significant difference. Liquids are great when I need to cover ground quickly or address nutrient deficiencies without delay. They're absorbed fast, and I can even mix them with water-soluble herbicides or pesticides to tackle several lawn tasks at once.

Granular fertilizers are my go-to for sustained feeding. They slowly release nutrients, which means I don’t need to apply them as often. Their long-lasting effect keeps my lawn fed for weeks, making them an efficient and time-saving choice for established lawns that just need maintenance.

The Critical Nutrients in Lawn Fertilizer

Fostering a lush, vibrant lawn isn't just about watering and mowing—it's about understanding the nutritional needs of your grass. And when it comes to fertilizer, the three critical nutrients are like the holy trinity: Nitrogen, Phosphorus, and Potassium.

Understanding Lawn Fertilizer Numbers

It's crucial to interpret the numbers on a fertilizer bag—for instance, 20-5-5—as these represent the percentages of Nitrogen (N), Phosphorus (P), and Potassium (K) by weight. Here's how it breaks down:

  • First number: The percentage of Nitrogen
  • Second number: The percentage of Phosphorus
  • Third number: The percentage of Potassium

So, for a 50-pound bag with a 20-5-5 formulation, you'll have 10 pounds of Nitrogen and 2.5 pounds each of Phosphorus and Potassium.

Nitrogen

Nitrogen is the nutrient responsible for the lush green canopy of your lawn. It promotes robust growth and supports protein synthesis necessary for a dense, healthy turf. However, applying excessive Nitrogen to an established lawn can cause more harm than good—it's like overfeeding that leads to burnout. Aim for a balanced approach, ensuring that you're providing just enough Nitrogen to encourage robust grass without overwhelming it.

Phosphorus

Phosphorus is the nutrient that aids seedlings in setting down roots, and it's particularly critical when establishing a new lawn or overseeding. It stimulates early root development and helps to mature the plant, which is why a higher Phosphorus concentration can be found in starter fertilizers. However, environmental responsibility is essential—excessive Phosphorus run-off can be detrimental to local waterways.

Potassium

Potassium works behind the scenes to improve the overall resilience of your grass. It empowers the lawn to better absorb water and nutrients while providing a stronger defense against diseases, pests, and harsh weather conditions. A well-fed lawn, where Potassium is balanced with Nitrogen and Phosphorus, is more likely to weather the challenges of each season with grace.

Determining What Nutrients Your Lawn Needs

The most effective strategy for nurturing a healthy lawn is to conduct a soil test. This will reveal what's missing and allow you to tailor your fertilization plan accordingly. Remember, maintaining a lawn isn't about impacting the plants directly (although liquid fertilizers can have immediate effects); it's about creating and sustaining fertile, balanced soils. The right fertilizer helps your grass thrive, regardless of the inevitable environmental stressors it'll face.

Making Your Own Lawn Fertilizer

When it comes to a lush lawn, the soil is where it all begins. The right DIY lawn fertilizer can kickstart your grass into high gear, resulting in a healthier, greener turf. I've explored all kinds of options, and I'll share some of my top tricks for creating your own lawn concoctions.

Manure

One of the oldest and most effective means to fertilize your lawn is manure. It's rich in nutrients and microbes that promote healthy soil and plant growth. When using manure:

  • Ensure it's well-composted to avoid burning your grass.
  • Spread thinly and evenly across your lawn.
  • Avoid using manure from carnivorous animals. Opt instead for manure from herbivores like cows and chickens.

Organic Feed

Organic feeds offer a slower release of nutrients, which can protect and nourish your lawn over a longer period. They typically include:

  • Bone meal for phosphorus.
  • Blood meal for a nitrogen boost.
  • Fish emulsion for a dose of both nitrogen and phosphorus.

By using organic feeds, you're not only nurturing your lawn but you're also taking a step toward a more sustainable gardening practice.

Composted Material

Turning kitchen scraps and yard waste into composted material is both eco-friendly and garden-smart. It's an excellent way to reduce waste and benefit your lawn.

Compost Tea

Compost tea is a liquid gold fertilizer. It's a water-based extract of compost that captures beneficial microbes and soluble nutrients which can be sprayed directly on the grass blades and soil.

Coffee Grounds

Coffee isn't just my morning essential; it's also great for my lawn. Nitrogen-rich coffee grounds can be sprinkled on the lawn or mixed with water (about half a pound of coffee grounds to five gallons of water) to create a nutrient-packed lawn tonic.

Grass Cuttings

Don't throw away those grass clippings after mowing. They're a great source of nitrogen. Simply leave them on the lawn to decompose and they'll feed your lawn as they break down.

Dish Soap

A surprising addition to DIY lawn fertilizers is dish soap. When used in very small amounts, dish soap can act as a surfactant:

  • It helps other nutrients penetrate the soil more effectively.
  • It can also help control certain pests.

Always use soap sparingly to avoid damaging your lawn.

Household Ammonia

Household ammonia, which is essentially nitrogen in a bottle, can be diluted with water and sprayed over the lawn to green up your grass. A typical mixture might be one cup of ammonia to one gallon of water. Just be cautious with the concentration to avoid lawn burn.

Epsom Salts

Epsom salts are rich in magnesium and sulfur, two key nutrients that can help seed germination, chlorophyll production, and the absorption of other nutrients:

  • Scatter a light dusting of Epsom salt over your lawn.
  • Water thoroughly to help it dissolve and reach the roots.

Remember, your lawn's needs are unique, and no single DIY recipe will be perfect for every yard. A soil test is invaluable for ensuring you're giving your lawn exactly what it needs without overdoing it. Experiment with these inputs, monitor your lawn's response, and adjust accordingly for the best results.

How to Apply Lawn Fertilizer

Applying lawn fertilizer might seem daunting at first, but it's a rewarding process. When it's time to feed your lawn, the tools you choose are vital. Drop spreaders are ideal for precise applications, particularly around flower beds or pathways to prevent overspread. For larger lawns, a broadcast spreader like the Earthway 2050p, ensures even coverage and more ground covered in less time.

For liquid fertilizers, a backpack sprayer can be your best friend, allowing for an even application across your lawn. Remember, it's essential not to overlap your liquid lawn fertilizer applications. To ensure this, I'll use a turf mark dye indicator. It's a simple solution that marks the spots I've sprayed and fades away within 24–48 hours, preventing over-application and potential damage to my grass.

When I'm out there in the turf, here are the steps I follow:

  1. Check the forecast to ensure no heavy rain is expected after application.
  2. Mow the lawn a few days prior to fertilizing.
  3. Water the lawn if it's been dry, allowing for better nutrient absorption.
  4. Fill my spreader or sprayer with the amount of fertilizer recommended on the label.
  5. Begin at the lawn's perimeter, then methodically move back and forth across the turf to ensure even coverage.
  6. Clean any fertilizer that lands on hard surfaces back onto the grass.
  7. Water lightly after applying to help the fertilizer soak into the soil.

Monitoring your lawn's response is crucial for determining the effectiveness of your DIY fertilizer. I always keep a close eye on grass growth and color changes. Additionally, conducting a soil test before starting my fertilization regime ensures that I'm not overdoing or underdoing certain nutrients. When in doubt, I refer to trusted sources for tips and application guidance to tweak my methods for the best results.

Lawn Fertilisation Schedule for Indiana

Crafting your own lawn fertilizer isn't just a cost-effective approach—it's a tailored way to give your grass exactly what it needs. I've walked you through the myriad of ingredients that can boost your lawn's health, from manure to Epsom salts. Remember, it's all about balance and finding what works for your specific patch of green. With the guidance I've provided on application techniques and the emphasis on soil testing, you're well-equipped to nurture a lush, vibrant lawn. Trust in the process, keep an eye on how your lawn reacts, and adjust your mix as needed. Your DIY lawn fertilizer could be the secret to the envy-inducing yard you've always wanted. Now, it's time to put these tips into action and watch your lawn thrive.

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