Mulch (Cobertura) em Pés Cúbicos

Mulch volume calculation

Mulch (cobertura morta) is the protective layer you spread over the soil. Aim for a thickness of 5-7 cm. Go thinner and weeds push right through; pile it too high and you risk smothering the roots. The volume is just area × depth. Take a 20 m² bed with 7 cm of mulch: 20 × 0.07 gives you 1.4 m³ (~49 ft³). Most people reach for pine bark, coconut fiber, straw, dried grass clippings, or shredded newspaper. The payoff is real. Mulch holds back weeds, keeps moisture in the ground, evens out soil temperature, and breaks down over time to feed organic matter back into the bed.

Applications

You'll see it everywhere in landscaping and ornamental gardens, in sustainable agriculture (no-till), across urban squares and parks, in soil regeneration projects, and in water-saving xeriscaping. It also shows up around potted plants and vertical gardens, where it cuts down how often you have to water.

FAQ

How often do I need to replenish? Organic mulches break down within 6-12 months, so plan on topping them up once a year. Inorganic options like stone or rubber hang around much longer, but they won't enrich the soil.

Can mulch attract pests? A layer that's both soggy and very thick can become a hideout for slugs and termites. Leave about 5 cm of clearance around stems and trunks and that's mostly avoided.

Does pine bark acidify soil? A little, as it decomposes, but rarely enough to bother most plants. If you're growing something acid-sensitive, go with straw or coconut fiber instead.