noun / verb
bloom
BLOOM/bluːm/
The opening and flourishing of flowers.
The pink bloom opens beside a closed bud.

Etymology
Bloom comes from a Scandinavian word akin to Old Norse blómi, which could mean a single flower or flowers and foliage collectively. The selected sense preserves the literal floral meaning.
In context
a plant that only gives you one bloom and takes up a small amount of space such as an ornamental cabbage where you're growing it you're cutting it it's only giving you one head