The flower stalks are long and skinny and are drooping almost to the ground. This is happening to several of my plants. Some of the flower stalks are twice as tall as the leaves. The leaves are not drooping. What can I do?
It is normal for some varieties to possess long, droopy stalks and may simply require staking to alleviate the issue. Others may need to be pruned or divided to keep them in check. I would first try staking the plant and seeing how it responds. Otherwise, you may need to consider a good pruning. Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-pruning.htm
https://www.gardeningknowhow.com/ornamental/flowers/bop/dividing-bird-of-paradise.htm
Can a Bird of Paradise plant be given a really hard cut back to about 20 cm, or will it not recover? I have two plants that need a drastic tidy up so I can clean up the garden around them.
Cut back the plant by no more than 1/3 per year. Cutting back anymore than that will kill it. Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-pruning.htm
My son just purchased a 60-year-old house with a very old Bird of Paradise that is about 5 feet tall and very brown and dry. Can it be cut back, and if so, how far can it be cut? Can it be cut almost to the ground? Should it be divided before or after pruning?
I would not cut it back by more than 1/3 a year, unless you are removing dead material. All dead material can be removed. It is easiest to prune before you divide.
How do I thin and transplant Bird of Paradise? Should I cut it down to the base and split it, or should I leave the foliage on it and split it through all the leaves? I need to transplant them to another area but must place them temporarily into pots so that the work on the planter walls can be completed.
This article will have more information on dividing them:
https://www.gardeningknowhow.com/ornamental/flowers/bop/dividing-bird-of-paradise.htm
I have a bird of paradise that has grown too tall. It is an old, established plant. Can I safely trim it to its base? If so, how long will it take to reach the flowering stage again? If not, how to move the entire plant?
You can do this and it will survive. It is best to do this in early spring though.
Can you cut it all completely to the ground? We have three Bird of Paradise plants in a group that are taking over and blocking the window view. Can they be cut down to the ground? Will they grow back up?
This article will help you:
https://www.gardeningknowhow.com/ornamental/flowers/bop/bird-of-paradise-pruning.htm
I have two bird of paradise plants that have a weird mold or fungus growing on the underside of their leaves. It is a white powdery mold that grows in small spots all on the underside. I have looked it up on the Internet but do not know how to really describe it. When we first moved into our house, there were quite a few ants living in the stems. Could that be causing this or could that only be adding to the mold problem? I also have a few shrubs that have a similar looking mold and whenever you brush against them, it looks like little white bugs fly off of them. I am really confused on how to fix these problems. Any help or advice is VERY appreciated.
Powdery mildew is a fungal disease associated with warm, humid conditions. Plants exhibit white, powdery growth on the undersides of leaves. Treating with neem oil will help. Here is more info: https://www.gardeningknowhow.com/plant-problems/disease/powdery-mildew-homemade-and-organic-remedies.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm