Three years ago we bought a Bougainvillea for our conservatory, for the first year it was full of lovely pink leaves. However, the year afterwards it didn't grow as many leaves and the pink leaves it had fell off very quickly. It also developed pale brown spots on a lot of the leaves. We removed as many of those leaves as we could, and eventually these spots seemed to reduce although not disappear altogether. This year, we have hardly had any new leaf growth and the plant is now looking quite sparse, and we're still getting the same pale brown spots on the leaves. We've tried reducing and increasing the water we give it and applied both a general plant food and a potash one, but nothing seems to be improving it. We're really, not sure what to do know, we don't want to lose the plant.
Yellowing or tan leaf spots can be signs of watering issues and or nutrition deficiency.
Red-brown spots are a more serious issue, and are likely a fungal or bacterial leaf spot.
You should keep the foliage dry and by pruning you can keep the leaves open to good air circulation.
When fertilizing make sure you use a special Bougainvillea fertilizer or a Hibiscus formulation.
Here are some links to refresh you on the care requirements.
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-flower-drop.htm
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-not-blooming.htm
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-in-containers.htm
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-not-blooming.htm
My husband aggressively trimmed a neighbor's Bougainvillea plant that was inhibiting a pathway between our properties. He cut it back so that now on one side (south-facing) there is virtually no green growth anymore. There is still plenty of green growth on top and on the north side and the edges. Understandably, our neighbor did not appreciate this. First of all, do you think this plant will be able to generate new growth from this south-facing side? Secondly, what fertilizer could you recommend to encourage new green growth? From, A Contrite Neighbor
Pruning should be down when the plant is semi dormant, which is in fall or early spring.
This plant is likely stressed from this untimely trim.
Bougainvillea are heavy feeders and need regular fertilizing when actively blooming.
A 6-8-10 formulation is good for Bougainvillea applied monthly. You may even find a specific product for Bougainvilleas.
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/pruning-bougainvilleas.htm
My bougainvillea is in a large pot (60 cm diameter by 45 cm high) and have under planted it with 2 thymes, which have grown to full size. Will they restrict the growth/flowering of the bougainvillea? It has a least 10 hours of sunshine daily. I use slow release food and water when the top soil feels dry, usually every other day.
I can't find any research that would say underplanting your Bougainvillea is a detriment to the plant.
Your plant looks wonderful and the Thyme fills in the pot very nicely.
Make sure you water the plant properly and enjoy!
Our plant unfortunately has been sitting in excess water, drain blocked. The leaves are all fallowing off. I have it now potted so it can drain. It is still quite moist. Not sure what direction to go with this. We live in Maryland so it is in a pot. Too cold here.
I'm not sure how large of a container that you are working with, but hopefully if it's large you can get some help to work on your plant.
I would lift the plant from the container and remove the wet soil and check the roots for signs of root rot.
You can prune the dead portions of the roots.
The pot can be cleaned and new soil used to repot the plant.
The plant may need to be cut back if it continues to decline. Follow the pruning instructions in the link below.
These articles have more information on over watered plants.
https://www.gardeningknowhow.com/plant-problems/environmental/overwatering-container-plants.htm
https://www.gardeningknowhow.com/plant-problems/environmental/signs-of-plants-affected-by-too-much-water.htm
https://www.gardeningknowhow.com/plant-problems/disease/treating-root-rot-gardening-tips-for-housplants.htm
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/pruning-bougainvilleas.htm
What needs to be done for the plant to turn back to pink instead of just green leaves? I have had this plant for 5 years and it has never re-bloomed.
This article will help you:
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-not-blooming.htm
Hello! Some little critter is eating and, more annoyingly, pooping all over my bougainvillea! Only my bougainvillea is being attacked, not my roses or jasmine. Any thoughts on which bug it is...or rodent? Eek! Thanks!!!
It could be these guys (and they definitely poop all over leaves):
https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-loopers.htm
Mammals don't commonly eat bougainvillea, so it's unlikely to be rodents.
I have a lot of vines. They are several years in the ground and keep shooting growth but no flowers. We do not fertilize and only water moderately one time a week. They are in a northern exposure close to the house. They get the am sun but not the intense southern pm sun.
If they are getting enough light (which is the most common reasons for plants failing to flower), then it is likely a lack of phosphorus. Plants need phosphorus to flower. Bone meal is a good source of phosphorus (https://www.gardeningknowhow.com/organic/bone-meal-fertilizer.htm).