Q.white bird of paradise
hi ! i planted 3 fairly large younger ( about 15 gallon i believe ) white birds of paradise early spring – i am in zone 9b . one had 3 stalks of growth and the other two had 2 stalks growing … iv had a problem with one of the smaller two but really only one looks pretty rough randomly . iv had to prune it due to the leaves turning dark brown/yellow-ish … i fertilized all threee & the main one im having a problem with also seemed to be unhappy with the fertilizer as well . iv been told to prune discolored problem leaves to the ground so that the plant has a better chance to work on new growth . but my main question is – if i do that will i kill the plant ? will they ( all of them ) be expected to eventually grow new stalks and survive – i have a 1/2 acre and hav spaced them very well i believe . im not one to give up on plants so easily & i love these things potential – i just feel like i need some pro tips . iv been googleing like crazy

Newly planted Bird of Paradise are very sensitive water fluctuations, too much or too little.
Avoid pruning until the plants are in dormancy or early spring.
These articles will refresh you on the care requirements.
https://www.gardeningknowhow.com/ornamental/flowers/bop/feeding-bird-paradise-plants.htm
https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-outdoors.htm
https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-yellow-leaves.htm
https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-an-exotic-flower-like-none-other.htm
https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-plant-diseases.htm
https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-pruning.htm