Tokeiji (temple) is one of th best spot to do ume viewing. Along the street inside temple, you see ume with blooming beautifully. There are not so many trees though, just you feel Japanese traditional cultures.

東慶寺01

ume

Basically, early to mid March is the best season and easy to access from Kitakamakura station.
Really nice contrast with Japanese roof

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A road line with trees

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【Tokeiji Temple】
Address: 1367 Yamanouchi, Kamakura
Hour: 8:30~17:30
Closed: Open everyday

東慶寺