How far can palm trees be inland?

Question

How far can palm trees be inland?

Answer 1

most are tropical and wont grow past southern texas and maybe arizonia by phoenix.

snow are very cold tollerant and can survive some brutial enviorments. needle palms can grow in chicago with protection. palms like windmill palms and needle palms can grow in oklahoma.

needle palms can survive to -20 and windmill palms to 5.

if a climate is tropical and rainy inland it can grow. they can really grow as far inland as long as its warm and humid. some though dont need humidity.