Maintenance ScheduleGarden
How often should you mulch garden beds?
A yearly mulch suppresses weeds, holds moisture and feeds the soil as it breaks down. Spring is the usual time, before weed seeds start and while the soil is still damp.
The answer
Mulch garden beds once a year, in late winter or early spring.
Range: 12 months · checked 6 November 2026
Typical interval
What changes it
- Thin or fast-draining soil may need a top-up, but not necessarily a second full mulch.
- A layer of 5 cm is the minimum; 7.5 cm is better for weed suppression.
- Keep mulch clear of woody stems and tree trunks to avoid rot.
- Use well-rotted compost or bark.
Do it
- Clear perennial weeds first.
- Spread a 5 to 7.5 cm layer over damp soil.
- Leave a 10 cm gap around stems and trunks.
- Water if the weather is dry, then let it settle.
Put it in your schedule
The maker opens with Garden Bed Mulch at every 12 months.
No account. The maker keeps the job in your browser and in the link.
Why this interval
The sources below give the full picture. The factors above are the ones that move the interval for most situations.
The range is a starting point, not a rule for every situation. The factors above are the ones the sources name; if your situation is different, use the range and ask a professional where the job needs one.
If you want the job in a schedule with reminders, open the schedule maker with this job already loaded. The how often index has the other jobs.
Garden Bed Mulch questions
What changes the interval?
Thin or fast-draining soil may need a top-up, but not necessarily a second full mulch. A layer of 5 cm is the minimum; 7.5 cm is better for weed suppression. Keep mulch clear of woody stems and tree trunks to avoid rot. Use well-rotted compost or bark.
Does the app use this interval?
The app’s ready-made schedule uses every 6 months for “Garden Bed Mulch”. Set it to every 12 months for the usual annual mulch.
Where does this come from?
The answer is checked against one primary source, linked under Sources with the date each was read.
Sources
The interval and the factors on this page are checked against this source.
- How to mulch with organic matter. Royal Horticultural Society.Mulching garden beds once a year. Checked 6 November 2026.