Q.New Foxtail Palms, fertilizer needs
When should we start fertilizing our new Palms. I should have asked in my first question about the Sago, but we also had three B&B triple trunk Fox-tail Palms planted the first of April. We watered twice a day 1st week, one a day 2nd week, and every other day going forward for 90days. All three have new fronds opening up and the lowest fronds are dying, which we think is related to lifting strapping on each trunk when planting,or just planting shock, but would like confirmation. Also when should we start fertilizing these palms and what type? We prefer spike slow release method, but need a recommendation. We had a professional weed matte installed and think spikes would work best to penetrate the think matting.

This article will refresh you on the care of Foxtail Palms.
https://www.gardeningknowhow.com/ornamental/trees/foxtail-palm/foxtail-palm-tree.htm