Palm Tree Healthy?

[JordanT]

Hello! I’m a New Florida homeowner with three very tall palm trees and three short ones. They are all showing some discoloration and moss, as well as what looks like a growth around the base. Is this normal and healthy? 
 

There is rubber mulch at the base that was put in by the previous owner. 

[Merlyn]

@JordanT welcome to PalmTalk!  The abnormal growth at the bottom is actually pretty normal, especially on the Pygmy Date (Phoenix Roebellini) palms.  Many palms will grow "adventitious roots" near the base.  They are also sometimes called aerial roots.  There's a Sylvester not too far from me that has roots growing out of the trunk about 8 feet up the trunk!

It looks weird, but it's normal.

The moss is frequently found on the side facing North, and is usually not a problem.  The only time it's an issue is if it's caused by a sprinkler hitting the trunk.  A sprinkler can eventually cause lower trunk rot.  But the moss is usually benign.

[Fishinsteeg234]

I agree with @Merlyn the moss is normal and is a good sign of consistent moisture/humidity; your pics show all signs of healthy trees in “hot and humid” Florida. I noticed the mulch pile in the background. Your garden will thank you greatly if you were to remove the rubber mulch and replace with the wood-chip mulch. The wood-chip mulch slowly breaks down while feeding all beneficial microorganisms to create the ideal growing medium for years to come. Feed the soil to feed the trees. Welcome to PalmTalk!