This is the 11971st most frequent Russian word.
зацветут
"Зацветут" means "will bloom."
In this sentence, 'зацветут' means 'will bloom' and is used in the future tense to describe the blooming of flowers.
В этом саду весной зацветут прекрасные цветы.
In this garden, beautiful flowers will bloom in the spring.
Here, 'зацветут' refers to trees blooming and emphasizes the future occurrence of this event.
Когда деревья зацветут, воздух наполнится ароматами.
When the trees bloom, the air will be filled with scents.
The word 'зацветут' indicates the impending blooming of lilac bushes as a natural process.