[Gardener]

I set this kind of thing as repeating actions. So:

Project: Keep house supplied
Action: (Repeating on a start date, monthly) See if we need light bulbs.
Action: (Repeating on a start date, weekly) See if we need garlic.
Action: (Repeating on a start date, yearly) Decide whether to buy spring bulbs.

When the start date arrives, the action becomes visible and I check. If I actually _do_ need light bulbs or garlic, I add an action to a single-action-list shopping list. Either way, I check off the "See if we need..." task and it goes underwater until its repeat time arrives.

All of this, of course, depends on the fact that most of my perspectives show Available actions, so by setting a future start date, I make these things disappear.

Gardener