Oh snowball viburnum, how I love you! This bloom just makes everything else look 100% more colourful.
Here you see it in the early part of the season (later March and April), when it comes in as a chartreuse green that makes everything around it pop. Closer to full season, May and June, we see these blooms coming in more of a white tone.
Snowball viburnum is a shrub so the stems are woody and thirsty. You might need a sharp pair of secateurs to snip the ends well, and try to recut them every couple of days to keep them sucking up water well. The blooms are heavy for the stems so they have a wonderful droop and sway to them that I love.