Mulch Calculator
Estimate how much mulch you need for garden beds and landscaping. Get results in cubic yards, cubic feet, and number of bags.
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Mulch Coverage Guide
1 cubic yard of mulch covers approximately 100 square feet at 3 inches deep. Bulk mulch is sold by the cubic yard, while bagged mulch is sold in 2 cu ft or 3 cu ft bags.
- Bulk mulch (by the yard) is cheaper than bagged mulch
- Apply 2-4 inches of mulch for optimal weed suppression
- Don't pile mulch against tree trunks or building foundations
- Shredded hardwood mulch lasts longer than bark nuggets
Frequently Asked Questions
How much mulch do I need for a garden bed?
Measure the length and width of your garden bed in feet, multiply them, then multiply by the desired depth in inches and divide by 324. This gives you cubic yards. For a 10x10 bed at 3 inches deep, you need about 0.93 cubic yards.
Is bulk mulch cheaper than bagged mulch?
Yes, bulk mulch sold by the cubic yard is significantly cheaper than bagged mulch. Bulk mulch typically costs $20-40 per cubic yard, while bagged mulch costs $3-5 per 2 cu ft bag, which is roughly $40-70 per cubic yard.
How deep should mulch be?
Apply mulch 2-4 inches deep for optimal weed suppression and moisture retention. 3 inches is the standard depth. Too much mulch (over 4 inches) can suffocate plant roots and promote rot.
When should I apply mulch?
Late spring (after the soil has warmed up) and early fall are the best times to apply mulch. Avoid mulching too early in spring, as it can delay soil warming.