Doc talk:Flower Animation
From Synfig Studio :: Documentation
So, if this tutorial is correct, does it mean that any object created in an animation is going to be a part of the entire scene? There's no way to sgnify when an object is needed in a scene and not needed? Wouldn't that lead to jast having a lot of objects moved off the stage until needed? That might clutter up a lot of animations. Maybe a function needs to be made for this. An object could be designated as 'backstage' which means that it's just not there for those frames.
Also, in lieu of this, why not simply encapsulate all the petals, and then mask that layer when to petals aren't needed, removing the mask right when they are supposed to start appearing.