Generally speaking, a few hours a week should be sufficient to plant, maintain, and harvest your community garden. Here's your guide to a happy and healthy garden in the winter, spring, summer, and fall.
During winter, hold meetings—one or two a month—to plan your garden and assign work:
When early spring rolls around, dedicate several days to cleaning and raking out beds.
Prepare soil in beds by:
Acquire plants (usually a few more than you anticipate needing to use as replacements). The Chicago Park District sometimes makes surplus plants available on a first-come-first-served basis.
Don't forget about the City of Chicago, Department of Environment’s GreenCorps, a comprehensive community garden assistance program that offers materials and training in the spring and fall. They also sponsor free plant distribution days.
Later in the spring, cultivate when the surface of beds dry out, breaking up crust and uprooting weed seedlings (continue this for the rest of the season).
Water deeply once or twice a week—this and rainfall should equal about one inch per week. Do NOT make several light waterings.
Apply fertilizer, if you wish, as a top dressing:
Mulch:
Hard mulches should be raked aside and can be tilled under when well-weathered. Soft mulches can be dug under in the fall.
In the summer, weed and water as necessary (about two times a week in two-hour shifts) and perform general plant maintenance:
Come autumn:
(Thanks to Bob Milke at the Garfield Park Conservatory for most of the information in this outline)