There are several threads about DB that you should go back and read Don. It's an resin from a South American
plant (it does resemble blood) that takes care of rot and
erwinia with very small applications to the infected area
on the plant. It is VERY effective and inexpensive at
26.00US plus shipping. You don't have to use much so
a bottle or two lasts a long time. I posted some time ago
that it also dries up poison ivy far better than anything I've
tried and I've tried everything. Lance and Eric know far
more about DB than I do. Drop NYEric a PM to find out if
he has any on hand. He just posted that he ships to EU.
The plant is Croton lechleri.