The Value of Mulch: Materials, Benefits, and Best Practices

Mulch is any soil cover that suppresses weeds, conserves moisture, and moderates temperature. The best mulches also feed soil life as they decompose. Apply 2-4" depending on material density.

Top Mulch Choices

Tree Bark

Shredded or chunked. Long-lasting, finished look. Verify it's actual bark—not dyed wood chips.

Wood Chips, Sawdust, Shavings

Break down faster than bark. Critical: They tie up nitrogen during decomposition. Add supplemental nitrogen (manure, cottonseed meal) if used near plants. Never use chemically/pressure-treated wood.

Shredded Leaves and Pine Needles

Free, nutrient-rich, attractive. Must shred leaves to prevent matting. Mow over leaves, rake into mounds. Pine needles ideal for acid-loving plants.

Seed Hulls and Crop Residue

Cocoa bean, buckwheat hulls, ground corncobs. Lightweight, attractive, local. Layer over newspaper for enhanced weed suppression.

Straw and Hay

Straw (grain stems): Few weed seeds, good vegetable mulch. Hay: Contains weed seeds—avoid. Delay straw on heat-lovers (tomatoes) until soil warms—straw keeps soil cool.

Grass Clippings

Free, fast-decomposing. Dry on lawn first—fresh clippings mat and turn slimy. Best in flower/vegetable beds.

Newspaper and Cardboard

Smother weeds in paths/around shrubs. Avoid glossy color pages. Cover with loose mulch. May need replacement mid-season.

Choose by Availability, Budget, Aesthetics, and Function

No single "best" mulch. Match material to bed type, local sourcing, and visual goals. The right mulch makes every garden task easier.