Buttercup

Well, the rabbit 'could' be called 'Buttercup' but there is a buttercup in the shot!

Can someone answer me this?  Why is it since I purchased that amazing lens the weather has been diabolical?  It reminds me of the time we bought a BBQ one Summer and it rained solidly for the whole 6 weeks after.  I just haven't been able to take this lens out and REALLY use it on some pretty cool subjects - so the rabbits in the field at the end of the garden are my latest further away models (for now!).