NE corner main roof status

The white box in the corner is badly collapsed and needs replacing.  Huge snapdragons are growing out of the sides however and I don’t want to disturb them this year.  I don’t know how snapdragons can get so large since I thought they grew from seed every year.

The debris clump in the forefront is in its second year and starting to get green growth.  The plant skeletons were put in this year.  This debris clump sits at the top of the roof so it gets the least amount of water of all clumps during rains.   I suspect  that won’t matter since any rain will completely saturate it anyway.  In other words, the water going under a debris clump will only matter if that’s part of the irrigation system.