The weather in Palmyra Atoll is unique in the world with its highest oceanicity index and lowest diurnal and annual temperature variation which is almost constant around 85. At night temperature might dip to no less than 75. This being said, the USDA zone 13 plants are the best to grow there which include:
Fruit Trees that grow in Palmyra Atoll:
Avocado
Bacuri Bacurizinho
Banana
Barbados cherry
Bignay
Coconut Palm
Lemon
Loquat Tree Sweet Yellow
Mango
Orange
Papaya
Passion Fruit
Pineapple guava
Wonderful Pomegranate
Vegetables that grow in Palmyra Atoll:
Bush beans
Eggplant
Hot peppers
Lettuce
Rocoto pepper
Summer squashes
Sweet pepper
Tomatoes
Flowers and Ornamentals that grow in Palmyra Atoll:
Aloe plant
Common zinnia
Dinner Plate Dahlia
Gerbera daisy
Lantana
Mexican flame vine
Musaceae
Plumeria
Queen Palm
Herbs that grow in Palmyra Atoll:
Basil
Cilantro
Racemosa coffee
Licorice
Red mint