I live in St. Maarten in the Caribbean
Pests or disease could be the issue. These articles should help:
https://www.gardeningknowhow.com/edible/fruits/soursop/soursop-tree-care.htm
have had this tree for about 6 years. every year it loses it's leaves and grows back a bit bigger. it does seem to have an ant problem and scales (i assume the ants are harvesting the scales). just wondering what is the best thing i can do to help the tree fruit? i live in the north coast of NSW, in a coastal town, high up. very warm and wet where other tropical plants seem to be doing well. temperature in winter doesn't really get below 8 Celsius i've attached photos. can you please let me know what you think. thanks
You will need to control the scale, and the fungus that they have caused. Consistent maintenance will be necessary. Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htm
https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
I would like to know what fertilizer I should use for my guanabana
You can use a balanced fertilizer with 10-10-10 NPK every quarter for your soursop tree. The article below tells how to increase it the first three years.
https://www.gardeningknowhow.com/edible/fruits/soursop/soursop-tree-care.htm
Please let us know if you have any other gardening questions and happy gardening!
Started from seed, about a foot high. Ready to plant but only have limited space.
Depending on the exact cultivar that you have, it will be anywhere from 15 to 30 feet of space that is necessary.
This article will help you with its care:
https://www.gardeningknowhow.com/edible/fruits/soursop/soursop-tree-care.htm
My soursop has a lot of flowers but is drying up and falling down
Follow these care and pruning tips to improve your soursop tree. The lack of fruit is probably poor pollination. You can hand pollinate it if it is pruned within reach. These articles should help:
https://gardeningsolutions.ifas.ufl.edu/plants/edibles/fruits/atemoya.html
I purchased a soursop tree and it experienced some transit shock. Got a little too cold. The leaves had brown spots so I removed all of them. When should I start seeing some recovery and what are the signs? Also when can I hope too see new leaves ...hoping it survives
Recovery time for a soursop tree experiencing transit shock and cold damage varies, typically taking a few weeks to a couple of months. After removing brown-spotted leaves, signs of recovery include new growth emerging from nodes. Ensure optimal growing conditions, maintain consistent moisture, and protect the tree from cold temperatures. If there's no improvement after a reasonable time, seeking advice from a local horticulturist or agricultural extension service is recommended.
Here is an article that will help you to care for your tree once it recovers:
https://www.gardeningknowhow.com/edible/fruits/soursop/soursop-tree-care.htm
The tree has new growth but the older leaves are affected. I don’t know why and what is the problem.
It looks like a pest, probably spider mites. A strong blast of water on all the leaves will help. If you can reach the leaves, spray them with Neem oil, but not during the heat of the day.
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-tree-damage.htm