A creature of your choice that you can see within range regains a number of Hit Points equal to 1d8 plus your spellcasting ability modifier. At the start of your next turn, they again regain 1d8 Hit Points. At the beginning of your following turn, the Lifebloom is dispelled. When dispelled, Lifebloom heals the target for 2d8 Hit Points. 

If Lifebloom is cast on a target that already has Lifebloom on it, the first Lifebloom is dispelled.

Using a Higher-Level Spell Slot. Each tic of healing increases by 1d8 for each spell slot level above 2. i.e. Using a 3rd level spell slot, Lifebloom will heal 2d8 upon casting, 2d8 on the following round, then 3d8 when the spell blooms.