My grapefruit tree is losing leaves and they are turning yellow. I have fertilized and it gets water every other day, but it still looks like it's dying. I need to know what I can do about it. Thanks.
Either too much water or too little water can cause citrus tree leaves to turn yellow and drop off. The right amount of water to give depends on how dry your climate is, how the soil feels before and after watering, and how well-drained your soil is. If your soil is not well-drained, water can sit around the roots and cause root rot.
https://www.gardeningknowhow.com/edible/fruits/citrus/tip-on-water-requirements-for-citrus-trees.htm
http://mgorange.ucanr.edu/Edible_Plants/?uid=58&ds=530
Here are some other possibilities:
https://www.gardeningknowhow.com/edible/fruits/citrus/leaves-falling-off-citrus-tree.htm
https://www.gardeningknowhow.com/edible/fruits/oranges/yellowing-orange-tree-leaves.htm
My mom gave me two grapefruit starter trees about 2 ft tall. The leaves have STICKY substance on them. I've taken a drop of Dawn detergent with warm water and wash it off but comes back the next day. Not sure WHAT IT IS or what I should do about it.
This is Honeydew, the secretions of insects.
Inspect the trees to see if you can determine which insect is on the trees.
Neem Oil can be used to treat the trees. Make sure you spray both the top and bottoms of the leaves.
Neem Oil is organic and safe for people, pets and bees.
Here are some links to help you.
https://www.gardeningknowhow.com/garden-how-to/info/what-is-honeydew.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/controlling-citrus-scale.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/controlling-citrus-thrips.htm
How do I get the leaves back on my grapefruit tree? It must be lacking something.
This article might help you find the problem:
https://www.gardeningknowhow.com/edible/fruits/citrus/leaves-falling-off-citrus-tree.htm
Other than those issues, drought, overwatering, or poorly drained soil can cause citrus leaves to drop off.
I have an red grapefruit tree about 3 years old in Jacksonville fl got a couple grapefruit off of it last year picked must of them off being only 2 years old in feb this year it bloomed and how has 15 or more grapefruit its end of april should I leave them on or take them off ??
In the 2nd year your tree may start producing small crops. You can leave them or remove them.
You will have the first real crops beginning in the 5th year.
Make sure you water and feed regularly to ensure a healthy tree.
https://www.gardeningknowhow.com/edible/fruits/grapefruit/growing-grapefruit.htm
This 20-year-old grapefruit tree has been producing exceptional harvest each year since we purchased this property in Phoenix Arizona 2 1/2 years ago. Recently we have noticed curling of the trees with some discoloration and markings on both sides, primarily the top side. Water is supplied daily and none of the other citrus trees on our property of Shawna similar problem. The tree was last filled citrus fruit a proximally Easter.
Looks like Leaf Miner damage.
These links will help you.
https://www.gardeningknowhow.com/edible/fruits/citrus/curling-citrus-leaves.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/leaf-miner-control.htm
Why is it turning yellow? What can I do about it? It get water when dry, afternoon sun. HELP
It could be that the leaves are sun scorched.
You can do further inspection on the tree to rule out other issues.
This link will help you.
https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1492.pdf
what causes the leaves to turn black
This is likely Sooty Mold, which is caused by Aphids or Scale insects.
These articles will help you.
http://ucce.ucdavis.edu/files/datastore/530-15.pdf
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm