Best Things To Compost For Rich, Black Gold Soil
Ever look at your kitchen scraps and yard trimmings and think there must be a better use for them than the trash bin? You’re not alone. Many gardeners feel a little uncertain about starting a compost pile, wondering what exactly can—and can’t—be tossed in. It feels like there’s a secret recipe no one shared.
I promise you, it’s not a secret, and it’s far easier than you think! I’m here to be your friendly guide and pull back the curtain on creating the most beautiful, nutrient-rich compost imaginable. We call it “black gold” for a reason, and you can make it right in your own backyard.
In this complete guide, we’ll walk through the absolute best things to compost. We’ll cover the essential “greens” and “browns,” uncover some surprising items you can add, list what to avoid at all costs, and share my favorite pro tips for a thriving, happy pile. Let’s get started!
What's On the Page
- 1 The Magic Formula: Balancing Your “Greens” and “Browns”
- 2 Your Ultimate “Green” List (Nitrogen-Rich Materials)
- 3 Your Ultimate “Brown” List (Carbon-Rich Materials)
- 4 The Surprising (and Safe!) Best Things to Compost
- 5 The “Do Not Compost” List: Protecting Your Pile and Garden
- 6 Best Practices for a Thriving Compost Pile
- 7 Frequently Asked Questions About the Best Things to Compost
- 8 Your Journey to Black Gold Starts Now
The Magic Formula: Balancing Your “Greens” and “Browns”
Before we dive into specific items, let’s talk about the single most important concept in composting: the balance between “greens” and “browns.” Getting this right is the foundation of this entire best things to compost guide.
Think of it like making a lasagna. You need layers of different ingredients to create the perfect dish. In composting, those layers are your carbon-rich “browns” and your nitrogen-rich “greens.”
- “Greens” (Nitrogen): These are your wet, fresh materials. They provide the nitrogen that fuels the microorganisms responsible for breaking everything down. Think fresh grass clippings and kitchen scraps.
- “Browns” (Carbon): These are your dry, woody materials. They provide carbon, which is the energy source for those same microorganisms. They also create air pockets, preventing your pile from becoming a slimy, smelly mess. Think dried leaves and cardboard.
A good rule of thumb is to aim for a ratio of about three parts browns to one part greens (3:1) by volume. Don’t worry about getting it perfect! This is more of an art than a science. If your pile is smelly and wet, add more browns. If it’s dry and inactive, add more greens and a little water.
Your Ultimate “Green” List (Nitrogen-Rich Materials)
These are the activators for your compost pile, providing the essential nitrogen to get things cooking. Most of these come directly from your kitchen and garden, making for a truly eco-friendly best things to compost system.
From Your Kitchen Counter
Your kitchen is a goldmine for green materials. Keep a small bin with a lid on your counter or under the sink to collect these scraps throughout the day.
- Fruit & Vegetable Scraps: Peels, cores, stems, and rinds from apples, bananas, potatoes, carrots, lettuce, cucumbers—you name it.
- Coffee Grounds & Paper Filters: Coffee grounds are packed with nitrogen and worms absolutely love them. You can toss the paper filter in, too!
- Used Tea Bags: Just be sure to remove any plastic tags or metal staples before adding them to your pile.
- Crushed Eggshells: A fantastic source of calcium for your future garden soil. Pro Tip: Rinse them and crush them into small pieces. The smaller the pieces, the faster they break down and release their nutrients.
From Your Yard & Garden
Your garden provides a constant source of fresh green materials throughout the growing season. This is a key part of how to best things to compost effectively.
- Fresh Grass Clippings: A powerful nitrogen source. Add them in thin layers, as thick clumps can mat down and turn into a slimy, anaerobic mess.
- Green Leaves & Plant Prunings: Clippings from annuals, perennials, and shrubs are perfect. Just chop up tougher stems to help them decompose faster.
- Weeds: Yes, you can compost weeds! Just be sure to add them before they develop seeds, otherwise you’ll be planting a weed patch next season.
Your Ultimate “Brown” List (Carbon-Rich Materials)
Browns are the backbone of your compost pile. They provide structure, airflow, and the carbon energy source. Stockpiling these is one of the most important best things to compost tips I can offer.
From the Great Outdoors
Autumn is the best time to gather and save a huge supply of brown materials for the year ahead.
- Dried Leaves: This is the absolute best brown material you can get. They are abundant, free, and break down beautifully. I recommend bagging up as many as you can in the fall!
- Straw or Hay: If you have access to it, straw is excellent for adding bulk and creating air pockets.
- Small Twigs & Wood Chips: These break down very slowly but are fantastic for aeration. Use them sparingly or run them through a chipper/shredder first if you can.
From Inside Your Home
You’d be amazed at how many carbon-rich materials you can find right inside your house. This is where sustainable best things to compost practices really shine.
- Shredded Paper & Newspaper: Non-glossy newspaper, office paper, and junk mail are all great. Shredding them first is key.
- Cardboard: Toilet paper rolls, paper towel tubes, egg cartons, and non-waxy cardboard boxes are perfect. Tear them into small pieces to speed up decomposition.
- Dryer Lint & Natural Fabric Scraps: Lint from cotton, wool, or linen clothing is compostable. You can also add small scraps of 100% cotton or wool fabric.
- Sawdust: Only use sawdust from untreated, unpainted wood. Add it in thin layers, as it can compact easily.
The Surprising (and Safe!) Best Things to Compost
Ready to level up your composting game? Here are a few items you might not have realized are perfectly safe and beneficial for your pile. This is where we separate the beginners from the pros!
Uncommon Household Treasures
- Human Hair & Pet Fur: Rich in nitrogen, hair and fur from your brush or pet grooming sessions can be tossed right in.
- Natural Wine Corks: Real cork is a wood product. Chop it up into smaller pieces and add it to the pile.
- Used Paper Towels & Napkins: As long as they weren’t used to clean up grease, chemicals, or anything you wouldn’t want in your garden, they are fair game.
- Wood Ash: Ash from your fireplace or fire pit (from untreated wood only) can be added in very small amounts. It’s alkaline and rich in potassium, but too much can throw off the pH of your pile.
The “Do Not Compost” List: Protecting Your Pile and Garden
Just as important as knowing what to add is knowing what to leave out. Avoiding these items will prevent foul odors, deter pests, and keep your finished compost safe for your garden. Steering clear of these is crucial for avoiding common problems with best things to compost.
- Meat, Fish, Bones & Dairy: These are the biggest offenders. They will rot, create horrible smells, and attract unwanted pests like rodents and raccoons.
- Fats, Grease & Oils: Oily salad dressings, cooking oil, and greasy foods can coat other materials, slowing decomposition and causing odor problems.
- Pet Waste (Cat & Dog): Feces from carnivores and omnivores can contain harmful pathogens and parasites that may not be killed by the composting process. Manure from herbivores like chickens and rabbits, however, is excellent.
- Diseased or Pest-Infested Plants: Unless you are an expert composter with a very hot pile (reaching 140-160°F), you risk spreading diseases like blight or powdery mildew back into your garden. When in doubt, leave it out.
- Treated Wood & Coal Ash: Pressure-treated wood contains harmful chemicals, and coal ash contains sulfur and heavy metals that are toxic to plants.
- Weeds with Seeds or Invasive Roots: Things like dandelions that have gone to seed or persistent weeds like bindweed can survive the composting process and take over your garden later.
- Inorganic Materials: Plastic, glass, metal, and synthetic fibers will never break down.
Best Practices for a Thriving Compost Pile
Knowing the ingredients is half the battle. The other half is technique. Following these best things to compost best practices will ensure your pile transforms into black gold efficiently.
Size Matters: Chop It Up!
The smaller the pieces, the faster they will decompose. Microbes have more surface area to work on. Chop up large vegetable scraps, shred your leaves with a lawnmower, and tear cardboard into small bits. This simple step can cut your composting time in half.
Layering is Key
As you add materials, try to alternate between layers of greens and browns. Start with a bulky layer of twigs on the bottom for airflow, then add a layer of browns (leaves), followed by a layer of greens (kitchen scraps), and so on. This ensures a good mix from the start.
Just Add Water
Your compost pile needs to be moist, but not soaking wet. The ideal consistency is that of a wrung-out sponge. If it’s too dry, decomposition will grind to a halt. If it’s too wet, it will go anaerobic and smell. Check it periodically and add water if needed.
Turn, Turn, Turn
Turning your pile with a pitchfork or compost aerator every week or two is crucial. This mixes the materials, incorporates oxygen (which the microbes need to thrive), and helps regulate temperature and moisture. It’s the single best thing you can do to speed up the process.
Frequently Asked Questions About the Best Things to Compost
Why does my compost pile smell bad?
A foul smell, like ammonia or rotten eggs, is almost always a sign of too much nitrogen (“greens”) and not enough oxygen. It’s become an anaerobic swamp! The fix is simple: add a generous layer of “browns” like dried leaves or shredded cardboard and turn the pile thoroughly to aerate it.
How long does it take to get finished compost?
This depends on your method! A “hot,” actively managed pile that is turned regularly can produce finished compost in as little as 2-3 months. A “cold,” passive pile where you just add materials and wait can take a year or more. Either way works—it just depends on how quickly you want that black gold!
Can I compost citrus peels, onions, and garlic?
Yes, absolutely! There’s a common myth that you can’t, but it’s not true. They can be acidic and some worms may avoid them initially, but in a mixed compost pile, they break down just fine. Just use them in moderation like any other ingredient.
What are the main benefits of using compost?
Oh, the benefits of best things to compost are endless! Finished compost improves soil structure, helps sandy soil retain water, improves drainage in clay soil, adds a huge range of nutrients and beneficial microbes, and reduces your household waste. It’s the best all-around soil amendment you can give your garden.
Your Journey to Black Gold Starts Now
Composting isn’t just a way to recycle; it’s a partnership with nature. You are taking what would be waste and transforming it into life-giving food for your soil and plants. It’s a beautiful, rewarding cycle.
Don’t be intimidated. Start small, remember the simple “greens” and “browns” recipe, and don’t be afraid to experiment. Your garden will thank you with healthier plants, bigger harvests, and more vibrant blooms.
You have the knowledge, you have the guide—now go turn those scraps into treasure. Happy composting!
