I have access to both for a small fee. I understand that you never seem to have enough compost, so it may not be first on the list to fill the mulch niche. Consider though, if you had a surplus of 1/4" sifted municipal compost or shredded leaves. Which have you found most effective as a mulch for your veggies. More specifically, snap peas, kohlrabi, brussel sprouts, and kale. I just turned the soil for probably the first time ever, (rental property) and am concerned about a rash of weed seed germination. I also live in Raleigh where we've had less than average rainfall, so water conservation is important. For those who have used both compost and leaf mulch, which do you prefer and why?