Yes, SAFFLOWER is a Scrabble word!

Letter values in Scrabble US: S 1, A 1, F 4, F 4, L 1, O 1, W 4, E 1, R 1.

Is it a valid word?

SAFFLOWER is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

thistlelike Eurasian plant widely grown for its red or orange flower heads and seeds that yield a valuable oil

Also: false saffron, carthamus tinctorius.