Hana-akari 

(花明かり) - Flowering lights

When this tree is in full bloom, the vivid neon colors makes the darkness look much brighter than normal, and emit an essence which attracts some Yokai to help germinate the parks and forests for others trees to grow, which may take hundreds of years. The colors are usually unseen to humans, but a rare event can make this tree true colors visible to those nearby. The essence is also a unique experience for humans creating spiritual links to the tree and the Yokai nearby.