Hello, I have 2 birds of paradise, both have small black dots on the underside of the leaves which seem to be killing the leaves - the plants still have new leaves coming out but at least half of each plant have these black lil dots on them ??? I am guessing insects ??? maybe can anyone help me with this problem and what is the best thing to use to fix them ??? thanks !!

The white one, Strelitzia nicolai, is less cold tolerant than the other common one, Strelitzia reginae. But it should come back when the weather warms up. The white one also gets much taller, although Ballarat weather will probably regularly trim it down, LOL.

Get rid of it. It is too large for a houseplant. I had one for a few years that I moved from a 2 or 3 gallon Home Depot Xmas pot up to a 24 inch (or larger) container. New leaves looked great but in a few months were tattered and torn and repeated the next year. Heavy to drag inside and outside. Finally let it outside one winter to let Jack Frost have it. Get the standard BOP plant instead but even then it is quite large - at least they will bloom once in a great while in a pot.

Had this plant for a few months with no issues, suddenly noticing these brown spots on a few leaves. New shoots still opening, but don’t want this to spread! I water once a week, and every other week use a diluted solution, as pictured. Is it mites, mold, rot, sunburn, over fertilization??