If you charge up a healing blossom to 80, but don’t fire it, it will consume 1 ammo.
The “charge” will then stay at 80, ready to heal whenever.
However if the user switches to thorn volley, or uses melee, upon “charging” again it will consume another ammo, even if the shot isn’t fired again.
Effectively 1 ammo is used every time you begin to “charge” the healing even if it’s fully charged, not when the orb is used or thrown. You can completely deplete your ammo without firing a single heal.
I’m not sure if this is a bug, but it’s incredibly counter intuitive.