Collocations for scrub - noun

1. small trees growing in a dry area

desert
miles of desert scrub

low
The vegetation consisted of low scrub.

dense, thick

patch
The horses stood near a patch of scrub.

be covered in, be overgrown with
The mountain was covered in scrub.

good
I gave the table a good scrub.

give sb/sth

brush (AmE) (scrubbing brush in BrE)

furiously, vigorously
thoroughly
away, down, out
Josh was scrubbing out the fish tank.

at
She scrubbed at the child's face with a tissue.

from, off
He scrubbed the blood from his shoes.

freshly scrubbed
his freshly scrubbed face

scrub sth clean
The table had been scrubbed clean.

Scrub is used with these nouns as the object:
bathroom, floor