I will be planting my veg. garden this week and have traditionally used
leaves (chopped up with my mower, saved from the fall) as mulch at my old
house (which worked just fine). At my current house, I didn't have enough
leaf mulch (fewer trees) and the weeds took over at times during the growing
season last year. What else should I use for mulch that will be effective
and improve the soil over time (like next year when I till again)?

Thanks, Elizabeth