Blame it on the girl (La Nina)

Cherry trees may be blossoming, but it's still quite cold for this time of year. I remembered this time last year we were having barbecues and tea on the lawn. Is this the La Nina effect? Or should we be blaming it on global warming, or both?

Nevertheless, here's a picture of my garden last week.



It may be pretty, but my house doesn't have double-glazed windows... :(