What kind of palm is this?

Question

They were planted 2 weeks ago, and seem to grow very fast. I think it might be Roystonea regia. Can anyone help me out?

http://images.baboom.dk/uploads_alb_large_wm/99161_l.jpg

All the seeds have a single very long root.

Answer 1

Considering they're growing as fast as they are, I'll say yes there's a big chance it might be Roystonea regia. It's a very fast growing palm, and when you have planted the seeds you will get results very quickly.

Answer 2

Most palms will develop that spike which will eventually form into the frond.  It's too early to tell what species that is from the picture.