When to Plant Bulbs?

Update...I think we've managed to avoid the tulip fire spores Although they aren't quite blooming yet!!

 

@Emily Jones ....!!!

 

I regard myself as a well informed and knowledgeable person when it comes to the great outdoors(garden). I have to admit I've learned something today with this botrytis tulipae as I'd neve heard of it!!
Maybe here on the Sussex chalk, we're immune from curly brown tulips, but I could give you a list as long as your arm of other nasties I've encountered in half a century of getting my fingers dirty