Yes, you can use shredded paper for mulch, but it works best when mixed with other materials
Shredded paper breaks down faster than wood chips and holds moisture well, making it useful around plants and in garden beds. However, paper alone tends to mat down and block water from reaching soil, so most gardeners mix it with coarser materials like wood chips or leaves. The type of paper matters—newspaper and cardboard work best, while glossy or colored paper may contain inks that take longer to decompose.
Paper mulch is free or nearly free if you shred your own, and it's a practical way to recycle office waste or junk mail. The main trade-off is that it looks less finished than bark mulch and requires more frequent replenishment as it breaks down quickly. If appearance matters less than function and cost, paper mulch can work well in vegetable gardens, around shrubs, or under trees where you don't mind replacing it annually.
Key Takeaways
- Shredded newspaper and cardboard are safe for mulch; avoid glossy, colored, or chemically treated paper.
- Mix shredded paper with wood chips or leaves to prevent matting and improve water penetration.
- explore paper mulch 2 to 3 inches deep, and refresh it once or twice per year as it decomposes.
- Paper mulch works best in vegetable gardens and around established plants rather than in visible landscape beds.
- Wet the paper layer lightly before adding it to help it settle and stay in place.
Which types of paper are safe to use
Newspaper is the safest choice. Black-and-white newsprint contains only carbon-based ink that breaks down harmlessly in soil. Shred it into strips about 1 to 2 inches wide so it doesn't clump. Avoid the glossy inserts that come with newspapers—those use different inks and take much longer to decompose.
Cardboard works well and lasts longer than newspaper because it's thicker. Flatten boxes, cut them into manageable pieces, and remove any tape or plastic packing materials. Corrugated cardboard is better than solid cardboard because water penetrates it more easily. Wet the cardboard before laying it down so it stays in place and doesn't blow away.
Skip glossy paper, colored paper, and magazines. The inks used in these products contain heavy metals and chemicals that can leach into soil over time. Office paper with colored text or printing is also best avoided. Thermal paper (like receipts) contains BPA and should never go in a garden. Stick to plain newsprint and plain cardboard when you're uncertain.
How to prepare and layer shredded paper
Shred newspaper into strips using a paper shredder, or tear it by hand into pieces roughly 1 to 2 inches wide. Tearing takes longer but works if you don't have a shredder. For cardboard, cut it into flat sheets or tear it into large pieces—you don't need to shred it as finely as newspaper.
Lay down a base layer of paper directly on soil, overlapping pieces by 2 to 3 inches so weeds can't push through the gaps. Wet this layer lightly with a hose so it stays in place and begins to settle. Then add a 2 to 3 inch layer of wood chips, leaves, or compost on top. This top layer holds the paper down, improves appearance, and speeds decomposition by introducing microorganisms.
The paper layer should be thick enough to block light from reaching soil (which stops weed seeds from sprouting) but not so thick that water can't penetrate. Two to four sheets of newspaper or one layer of flattened cardboard usually works. If you're using only paper with no top layer, aim for 4 to 6 inches of shredded material, though this will mat down over time.
Common mistakes to avoid
The biggest mistake is laying paper too thick without a top layer. Paper compacts under its own weight and rain, creating a barrier that sheds water instead of absorbing it. Your plants end up dry even though the mulch feels damp. Always add a coarser material on top—wood chips, straw, or leaves—to keep paper loose and allow water through.
Don't use paper mulch right against tree trunks or plant stems. Leave a 3 to 4 inch gap around the base of each plant so air can circulate and moisture doesn't accumulate against bark, which invites rot and pest damage. Paper mulch can trap moisture and warmth, creating ideal conditions for fungal growth if it touches the plant directly.
Avoid mixing paper with synthetic materials or treated wood chips. Stick to organic top layers like hardwood chips, pine needles, or shredded leaves. Paper breaks down into the soil, so you want everything above it to do the same. Synthetic landscape fabric underneath paper can trap moisture and prevent the paper from decomposing properly.
How often to replace paper mulch
Shredded paper breaks down in 6 to 12 months depending on moisture, temperature, and soil microbes. In warm, wet climates it decomposes faster; in cool, dry areas it lasts longer. Check the layer in spring and fall—if you can see bare soil through it or if the paper has turned dark and crumbly, it's time to add more.
Plan to refresh paper mulch once or twice per year. In spring, add a fresh layer before weeds germinate. In fall, add another layer to insulate soil and suppress winter weeds. Each time you add mulch, pull back the old layer slightly, add new paper, then replace the top layer of wood chips or leaves. This prevents the mulch from building up to an excessive depth.
As paper decomposes, it enriches soil with organic matter, so you're not just suppressing weeds—you're improving soil structure and water retention over time. This is especially valuable in vegetable gardens where you want to build soil health year after year.
Paper mulch versus other mulch materials
| Material | Cost | Lifespan | Water Retention | Best Use |
|---|---|---|---|---|
| Shredded Paper | Free to low | 6–12 months | High | Vegetable gardens, under wood chips |
| Hardwood Chips | Moderate | 2–3 years | Moderate | Landscape beds, pathways |
| Pine Needles | Low to moderate | 1–2 years | Moderate | Acid-loving plants, woodland gardens |
| Straw | Low | 6–9 months | High | Vegetable gardens, strawberry beds |
| Bark Mulch | Moderate to high | 3–5 years | Moderate | Ornamental beds, visible areas |
Paper mulch shines in vegetable gardens and temporary plantings where you don't mind replacing it frequently. It's cheaper than bark mulch and breaks down into the soil, improving fertility. Wood chips last longer and look more polished, making them better for permanent landscape beds where you want a finished appearance.
Straw works similarly to paper but is bulkier and can introduce weed seeds if not sourced carefully. If you're choosing between paper and straw for a vegetable garden, paper is cleaner and easier to handle, while straw provides better insulation in cold climates. For ornamental beds where appearance matters, bark mulch or hardwood chips are worth the extra cost because they stay attractive for years.
Frequently Asked Questions
Will the ink from newspaper hurt my vegetables?
Black-and-white newsprint uses carbon-based ink that is safe for vegetable gardens. The ink breaks down in soil and does not accumulate in plants. Avoid glossy inserts and colored sections, which use different inks, but standard newspaper is fine to use directly around edible plants.
Can I use paper mulch in a flower bed where it will show?
Paper mulch looks less polished than bark or wood chips, so it's not ideal for visible ornamental beds. If appearance matters, cover the paper with a 3 to 4 inch layer of attractive wood chips or bark. The paper underneath will suppress weeds while the top layer provides the finished look you want.
What if I don't have a shredder—can I tear paper by hand?
Yes, tearing newspaper by hand works fine. Tear it into pieces roughly 1 to 2 inches wide and layer it as you would shredded paper. It takes more time than using a shredder, but the result is the same. Cardboard is easier to handle in large flat pieces without shredding.
Does paper mulch attract slugs or other pests?
Paper mulch can retain moisture that slugs and snails prefer, but the pests are attracted to the moisture and decaying organic matter, not the paper itself. If slugs are a problem, use a thinner mulch layer, may support good air circulation around plants, and remove any decaying plant material promptly.
Can I mix paper mulch with compost?
Yes, mixing shredded paper with compost or aged manure works well. The compost introduces beneficial microbes that speed paper decomposition, and the combination improves soil structure as it breaks down. Aim for roughly equal parts paper and compost, then add a top layer of wood chips if desired.