Spring is a good time to prune hibiscus back. How far pretty much depends on how leggy they are. As long as you leave at least 3 nodes on each branch you should be okay. You can root prune at the same time by slicing an inch of soil off the bottom and sometimes the sides of the root ball and replanting in fresh soil.
Don't trim your weeping hibiscus to much, the long branches help with weeping effect. I live in Florida zone 9a, I've been pruning my weeping hibiscus in late fall, or early winter. This is when it's not blooming, and if we do get a freeze it's much easier to cover it. At the same time I fertilize with potassium, "potash", which helps with root growth. Spring I try to find a fertilizer with high phosphorus, which helps develop blooms (hard to find in FL). If you don't know how to read to numbers on every bag of fertilizer, for example, 16-4-8. The first number (16) is the Nitrogen content, second (4) is the phosphorus content, and last (8) is potassium content. Hope this helps.
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The branches are all weeping to one side and as a consequence, so is the entire tree! Also when and how much to I cut away? The leaves are beginning to fall.
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-prunning
Spring is a good time to prune hibiscus back. How far pretty much depends on how leggy they are. As long as you leave at least 3 nodes on each branch you should be okay. You can root prune at the same time by slicing an inch of soil off the bottom and sometimes the sides of the root ball and replanting in fresh soil.
Don't trim your weeping hibiscus to much, the long branches help with weeping effect. I live in Florida zone 9a, I've been pruning my weeping hibiscus in late fall, or early winter. This is when it's not blooming, and if we do get a freeze it's much easier to cover it. At the same time I fertilize with potassium, "potash", which helps with root growth. Spring I try to find a fertilizer with high phosphorus, which helps develop blooms (hard to find in FL). If you don't know how to read to numbers on every bag of fertilizer, for example, 16-4-8. The first number (16) is the Nitrogen content, second (4) is the phosphorus content, and last (8) is potassium content. Hope this helps.
I'm in zone 9b, considering a weeping hibiscus west exposure in front of our picture window as a feature. How old is your tree and how large is it?
Any photo??