In established planting areas, rake off plant debris from winter, divide plants that are too close, fluff up top of soil, feed, and mulch (but not against stem of plants!).
In new planting areas, thoroughly dig and aerate soil with organic compost or manure. If the area was not limed in the last year or so, treat the area with 10# of lime or wood ash per 100 sq.ft. every other year.
To fill in new plants in holes in existing gardens or in a new area, mulch around plants to keep from drying out, and regularly water until plants are established.
Mulch: used to conserve moisture; helps retain fertility of soil; suppresses weeds
Compost: low concentrated but balanced soil amendment; provides moderate amount of fertilizer
Manure: provides more concentrated feeding but may be acidic and burn plant roots if used excessively