Timelines are universal features of health promotion programmes, which often receive little in the way of detailed analysis. Prospectively, timelines form supportive structures; they assist in planning and provide key milestones. However, they may also simultaneously constrain action or force the prioritization of some actions over others. This article uses the case of one health promotion programme to explore the multiple timelines in action: the contract, evaluation, usual programme phases and specific to a community garden project in the programme, the seasons. This exploration demonstrates the complexity of these timelines and how they affected programme implementation and were reflected in community participation. The discussion also demonstrates the importance of skilled facilitation of programmes, especially those based on a community development approach.