If your garden’s begging for mulch and your wallet’s like, “try again in July,” don’t worry. Some of the best mulch options don’t come in bags — they’re probably sitting in your yard, your kitchen, or your neighbor’s trash pile right now.
Late June is actually the perfect time to mulch. Your plants are growing fast, the heat’s kicking in, and weeds are launching their annual takeover attempt. The right mulch smothers those weeds, locks in moisture, and keeps your plants from turning crispy by noon.
This isn’t just about saving money. It’s about using what you already have to build healthier soil, protect your roots, and keep the good bugs happy. All without hauling home overpriced sacks of shredded who-knows-what from the garden center.
Let’s look at the free stuff — the smart, scrappy mulch materials that work just as well, and sometimes better, than the fancy stuff.
🌿 Key Takeaways
- 🌱 Grass clippings work great if dried and used in thin layers — avoid clumping at all costs.
- 🧻 Shredded paper is sneaky-good as mulch when paired with water and topped with straw or compost.
- 🍌 Kitchen scraps can mulch when buried shallow and rotated — just skip the meat and cheese.
- 🪨 Small rocks are long-lasting and perfect for herbs, succulents, and dry zones.
- 🐔 Straw or old bedding mulch keeps weeds down and soil cool — great around heavy feeders.
- 🧶 Cardboard is your secret weapon for weed control and worm happiness — just wet it first.
- 🌿 Herb trimmings feed your soil and keep moisture in, especially in containers or soft beds.
- ☕ Coffee grounds give a nitrogen kick — dry them out and use lightly to avoid crusting.
- 🐓 Chicken bedding adds nutrients fast — just let it age a bit before tossing it around your tomatoes.
- 👕 Old cotton fabric blocks weeds and works great under mulch layers or between rows.
- 🪵 Sawdust can mulch too — but only if it’s untreated, aged, and used away from veggies.
1. Grass Clippings (If You Use Them Right)
Grass clippings are one of the easiest mulches to get your hands on — especially if you’ve got a lawn and no shame about stealing your neighbor’s bagged cuttings off the curb.
But don’t just dump them straight on your soil like a green carpet. Fresh clippings piled thick can mat down, go slimy, and start smelling like a wet barn floor. Done right though, they’re nitrogen-rich, moisture-locking magic.
- Let them dry first. Spread them out for a day or two so they lose that sticky, clumpy texture.
- Apply in thin layers. No more than 1–2 inches thick at a time to keep airflow moving and rot away.
- Avoid treated lawns. If your grass has been sprayed with weed killer or fertilizer, skip it. That stuff can mess with your soil life and damage tender plants.
- Use on heavy feeders. Tomatoes, corn, and squash love the nitrogen boost as the clippings break down.
2. Shredded Paper (The Good Kind)
Junk mail, grocery lists, those receipts you’re never going to file — all of it can be turned into mulch if you’ve got a shredder or a pair of mildly aggressive scissors. Paper mulch works great in veggie beds, especially for suppressing weeds and locking in moisture during hot, dry stretches.
It breaks down slowly, attracts worms, and keeps your soil covered. But not all paper is mulch-worthy — you’ve got to be a little choosy.
- Use black-and-white newsprint or plain office paper. Skip glossy flyers or colored inks — they can contain weird coatings or chemicals.
- Shred it small. The finer the strips, the better it mixes into the soil and stays in place.
- Wet it slightly before laying it down. Dry paper blows away fast. A light misting helps it stick and settle.
- Top with grass or straw. A thin layer on top of the paper keeps it from baking in the sun or looking like your compost bin exploded.
3. Food Scraps (But Not How You Think)
Before you bury your banana peels and carrot tops like a squirrel in witness protection, hold up. There’s a better way to use kitchen scraps — and it doesn’t involve compost bins, bad smells, or a 6-month waiting period. Spread them under mulch as a slow-release soil snack.
This is called trench mulching or composting in place. And it’s shockingly effective — especially for lazy gardeners who still want great results.
- Chop your scraps small. The smaller they are, the faster they break down. Think onion skins, fruit peels, coffee grounds, veggie ends.
- Bury them shallowly. Dig a trench or a shallow hole near your plants, toss in the scraps, and cover with soil and a layer of mulch.
- Avoid meat, dairy, and oily stuff. That attracts pests and smells like regret. Stick to clean, plant-based scraps only.
- Rotate where you bury. Spread the goodness around your garden to avoid overloading one spot.
4. Small Rocks and Gravel (Yes, Really)
Not every mulch has to rot. Small rocks, pea gravel, and even crushed brick can act as long-term mulch — especially in hot, dry areas or around drought-tolerant plants. They insulate the soil, discourage weeds, and never break down or blow away.
Rocks aren’t ideal for veggies, but for herbs, succulents, native perennials, or container gardens? They’re low-maintenance magic.
- Use in dry zones only. Rocks hold heat, so they’re great for sun-loving plants but not ideal in moist or cool beds.
- Layer landscape fabric underneath. This stops weeds from growing up through the gravel over time.
- Collect from pathways or construction leftovers. Crushed stone, gravel sweepings, even aquarium gravel can be repurposed for free.
- Rinse first if you’re unsure. Old gravel can have salt or chemical residue — a quick hose-down solves that.
5. Straw or Hay Scraps (From Anywhere You Can Get Them)
Straw is one of the most gardener-approved mulches out there. It’s light, easy to spread, and breaks down slowly into beautiful, fluffy soil. But if you’re not raising livestock or running a pumpkin patch, how do you get it without dropping cash?
The answer: look for scraps. Local farms, pet stores, feed supply shops, even Halloween decorations — straw’s everywhere if you know where to look. And the leftovers are usually free or dirt cheap.
- Ask local animal shelters or feed stores. Used bedding straw that’s still dry is perfect for mulch.
- Use in thick layers. 3–4 inches of straw smothers weeds and keeps soil cool like a boss.
- Top up mid-season. Straw breaks down slowly, but a top-up in July keeps it fresh and effective.
- Avoid hay unless you know the source. Hay often has weed seeds. If it’s old or spoiled, it may be safe — but don’t risk it near veggie beds unless you’re sure.
6. Cardboard (Aka Worm Buffet)
Cardboard mulch is the unsung hero of lazy gardening. It blocks weeds like a champ, holds in moisture, and breaks down into worm-friendly goodness. Plus, it makes you feel slightly better about all those Amazon boxes piling up in your hallway.
Use it as a base layer under other mulches or even on its own in less-visible spots like pathways or between rows. The trick is to pick the right kind — and lay it down like you mean it.
- Choose plain brown cardboard only. No shiny coatings, tape, or colored ink. Just the boring stuff.
- Soak it before laying down. Wet cardboard molds to the ground better and won’t blow away.
- Layer it 2–3 sheets thick. Overlap edges to block weed sneaks. Cover with compost, straw, or wood chips if you want to dress it up.
- Use it to kill grass before planting. Lay it down in late June, water it, and by mid-July you’ve got a weed-free bed ready to go.
7. Herb Trimmings and Kitchen Greens
Don’t toss those wilted basil stems, parsley ends, or bolted cilantro. Herb trimmings make excellent light mulch — especially around herbs, lettuces, or anything you’re growing in pots. They break down fast, add trace nutrients, and gently feed the soil while keeping it shaded and cool.
Plus, many aromatic herbs have mild pest-repelling powers. Bonus: they make your garden smell like a gourmet kitchen when it rains.
- Chop them small. Bigger stems dry out weirdly. Fine trimmings decompose faster and spread evenly.
- Mix and layer them lightly. Use a thin layer — about half an inch — and combine with other mulch if needed.
- Use fresh or slightly wilted trimmings. Avoid slimy or moldy bits. If it’s still edible-ish, it’s fine for the soil.
- Best for containers or soft-stemmed crops. It’s a gentle mulch, not a heavy-duty weed smotherer. Think of it as a garnish for your soil.
8. Used Coffee Grounds
Your garden’s got a caffeine addiction — and used coffee grounds are the fix. They’re rich in nitrogen, fine enough to blend into the soil, and excellent at retaining moisture when used in moderation. Plus, they smell great and make you feel like a classy, compost-savvy wizard.
Just don’t treat them like a dump-and-run mulch. Coffee grounds are powerful stuff and need to be handled with a little finesse.
- Dry them first. Wet coffee grounds clump and can form a crust that repels water. Spread them to dry before using.
- Apply in thin layers. A dusting — not a blanket. Think seasoning, not frosting.
- Mix with other mulch. Combine with straw, leaves, or grass clippings to avoid over-concentration.
- Use around acid-loving plants. Blueberries, hydrangeas, and azaleas love the slight pH shift.
- Ask local cafes for free grounds. Most are happy to hand them over. Bring a bucket, say thanks, and score free mulch fuel for life.
9. Chicken Bedding
If you’ve got backyard chickens — or know someone who does — you’re sitting on a goldmine of mulch material. Used bedding is a mix of straw, wood shavings, feathers, droppings, and food bits. Sounds gross. But it’s nutrient-rich, fast-composting, and your soil will thank you for it.
The trick is letting it cool off first. Fresh chicken poop is hot (as in nitrogen hot) and can burn your plants. But once it’s aged even a little, it becomes a powerful, living mulch layer.
- Avoid fresh bedding on tender plants. Let it age for 2–3 weeks or compost partially before applying.
- Use as a top layer in fallow beds or around mature crops. Great for corn, squash, or tomatoes that can handle the boost.
- Rake it out lightly and water it in. Moisture helps bind everything together and keeps dust down.
- Get it from local chicken keepers. Most people will happily give you their used bedding — just don’t show up in white shoes.
10. Old Cotton Fabric and T-Shirts
That ratty t-shirt with the mysterious stains? Don’t toss it — mulch it. Natural cotton fabric makes a surprisingly effective weed barrier and moisture retainer. It’s breathable, biodegradable, and available in just about every laundry pile on Earth.
This works especially well in between rows or under a layer of compost. Your garden doesn’t care what band was on the shirt — just that it keeps the soil cool and the weeds in check.
- Use only 100% cotton fabric. No synthetics, no blends — polyester won’t break down and just turns into trash mulch.
- Cut into strips or lay flat. Great for making mulch paths or rows between plants.
- Soak it before laying down. A wet shirt molds to the soil better and stays put in wind.
- Cover with straw, wood chips, or compost. It keeps the fabric moist and makes everything look less like laundry day in your garden.
11. Sawdust (Handle with Care)
Sawdust is a free mulch source that most gardeners ignore — or fear. It breaks down slowly, blocks weeds like a pro, and smells amazing after a summer rain. But it does come with a catch: sawdust can tie up nitrogen as it decomposes, stealing nutrients from your plants if you’re not careful.
That said, with the right strategy, it’s a great mulch for paths, shrubs, fruit trees, and even walkways between beds.
- Use only untreated, natural wood. No stained, painted, or pressure-treated wood — those chemicals are garden killers.
- Apply away from veggie roots. Use sawdust around perennials, trees, or paths, not directly in your veggie rows.
- Mix with nitrogen-rich compost. This balances the carbon-heavy nature of sawdust and keeps your soil from going hungry.
- Let it age if possible. Even a few weeks of sitting helps reduce its nitrogen-sucking tendencies.
Look, mulch doesn’t have to be fancy. It doesn’t have to be expensive. And it definitely doesn’t need to come in a color-coordinated plastic bag with a brand name printed in big letters. If it covers the soil, keeps moisture in, blocks weeds, and feeds your garden over time — it’s mulch. Period.
I’ve used every single one of these materials in my own beds at some point. Sometimes it’s out of curiosity, sometimes it’s because I’m too lazy to go to the store. But more often than not, the garden responds just fine — or even better — when I stick to the simple stuff.
So try one. Or three. Mix and match. Your plants won’t judge. They’ll just sit there soaking it all in like it’s a five-star spa day for roots.
Daniel has been a plant enthusiast for over 20 years. He owns hundreds of houseplants and prepares for the chili growing seasons yearly with great anticipation. His favorite plants are plant species in the Araceae family, such as Monstera, Philodendron, and Anthurium. He also loves gardening and is growing hot peppers, tomatoes, and many more vegetables.