So, I was having trouble with one hibiscus. Only got to 6-inches last year in 2021 (it was new and planted fall 2020).
This year it had 2 stalks about the same short size, one died, the smaller one looked sickly.
In a last-ditch effort I saw this stuff in a big-box store. Sprinkled it around the sick hibiscus (and the other healthy ones, too).
https://www.pennington.com/all...
Wow, the sick one took off, is about 2ft tall now, and now has several buds (as yet unbloomed - not a super-sunny area). It looks healthy.
The others have bloomed more buds than I have ever had before. They are both done blooming for the year now though.
I thought I should share just in case anyone is having trouble with a fussy hibiscus. My fussy one was the Summer Carnival.
it blooms before it gets too cold.