We got some dwarf palms in March. Their fronds were about a foot long when we got them.
We moved them with roots twice before we planted them. We let them sit and establish for about three months after the second move. We were advised that they like a mixture of sand and dirt, which we have on our property.
We've provided no supplements but water them once a week if it isn't raining. The fronds are between 4 and 5 feet now.
We also have one coconut tree that grew from a coconut we found on our land. It sat for six months in the shade and wasn't happy, then burnt in the sun when we transplanted it. Despite the tricky start it now has fronds nearly 5 feet long. It had two leaves on it when we picked it up in December.
There is no doubt that if you want any of your plantings to thrive, there is a better chance of that if they are tended to. Also, I'm not sure if Peter is referring to this, but there are some who sell 'relocated' palms here, which are 'acquired' from empty lots.