Field notes
Building a planting calendar around the weeks you actually have labour
Seasonal planning fails quietly when the calendar assumes helpers who are already booked for someone else’s transplant day.
A planting calendar that ignores labour weeks is a wish list. Before choosing transplant dates, list the people who can work your fields and the weeks they are already promised elsewhere in the district.
Place the heaviest labour tasks first: nursery pulling, transplanting, and the first weeding. Fill lighter tasks around those anchors. If two heavy weeks collide, shift the crop mix or accept a smaller area rather than pretending the calendar will stretch.
Keep a contingency window of five to seven days after each critical task. Rain in northern Vietnam does not respect ink on a page. Farms that protect that buffer waste less seed when the weather stalls a transplant morning.
Share the draft calendar with anyone who brings labour. Agreement before the season is cheaper than apologising in the mud.