In a dream it is money from the ruler, lawful, followed by good repute. Celery (karafs) may signify unbelief (kufr), because its name is derived from it. It may also signify secrets being revealed and doing deeds for show.
Dream meaning · al-Nabulsi
Celery كرفس
Source: al-Nabulsi, Ta'tir al-Anam fi Ta'bir al-Manam, p. 299. English translation by iDreamBot. Quran verses: Quran.com, Saheeh International.