Tokyo never ceases to surprise me. A short wander down the Inokashira Line, I came across Hanegi Park. Don't let the baseball field fool you, this park is home to a truly charming bairin (plum tree orchard) with around 650 trees fetchingly grouped together.
Unfortunately I showed up about 2 weeks past their peak so couldn't get the full effect. But ume are much hardier than their delicate sakura cousins, so there were still enough blooms to make for a nice afternoon walk.