I have a potted Holly tree and the leaves are falling off. They look to be dried and shriveled. Does this mean if I put it in a place with more sun and water it more, it will be revived?
Not necessarily. Both overwatering and underwatering can cause leaves to drop off container plants. Excessive water or poor drainage can damage the roots so that the plant can't absorb water, so the leaves could still appear dry and shriveled.
To tell the difference, feel the soil before watering and make sure it is dry, but doesn't stay dry for days at a time. If the plant's leaves look wilted but then perk up after watering, it's underwatered. Also make sure your soil mix is well-drained and that the pot has enough drainage holes in the bottom.
More sun will certainly help most indoor plants, so I would advise placing it in the spot that gets the most sunlight.
What would cause holly to drop green berries?
There is some reports that certain varieties will drop or thin it's berries before they ripen to red.
Dragon Lady is one of the varieties know to do this.
Your Holly may also be having pollination issue. It's possible they are getting enough pollen to grow berries, but the process isn't through enough for the fruit to reach maturity.
Plant stress can also cause the fruit to abort. Drought, sudden temperature changes or poor soil nutrition could be the cause.
Water your Holly during hot, dry spells.
I would also have a soil test done to determine the soil nutrient levels and the ph.
Here are some links that will help you.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/growing-holly-bushes.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/fertilizing-holly-bushes.htm
The house I bought has a very large holly bush in the yard. I know that hollies are dioecious so I need to get another. How do I know what kind to get? Male or female?
If your Holly has berries, it is most likely a female. No berries you have a male Holly.
Here is a link with more information.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/how-to-tell-the-difference-between-a-male-and-female-holly-bush.htm
Certain branches are dying from the outermost leaves down the branch to where it's connected to the main stem. Other branches around it are not affected. I've trimmed it several times in the last year, removing the affected areas. However, it continues to happen. Should I remove the Holly or is there something I can do to restore my plant to good health? I've only had the plant about two years. The other Holly I bought at the same time is doing well.
From the image it appears to be leaf scorch, but you could also be dealing with a fungus issue.
Prune away the damaged plant material and dispose of.
I would use a broad spectrum fungicide on the plants.
Make sure the soil is well draining and pull any mulch back at least 6 inches from around the trunk of your plants.
You can mulch with some good compost to add nutrients and aide in soil compaction and drainage.
Have two holly tree/bushes. They both have lost most of there leaves. We live in Eastern Kansas, Topeka. I'm assuming cold did it, I've not seen this before to thus extent. We had so much rain last year they were really lush. Do you think they will regrow there leaves? Thank you Leonard
Your Holly may have dropped leaves due to leaf scorch, but it also can be normal for some leaf drop in spring.
Make sure the plant is properly watered during dry spells.
2 to 3 inches of mulch will help with moisture levels, but make sure you keep the mulch away from the the base of the trunk by about 6 inches.
Inspect the leaves of the Holly to check for any other signs of disease or pests.
These articles have more information.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/leaf-scorching-in-holly.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-problems-holly-leaf-spot-or-holly-tar-spot.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/diseases-of-holly-bushes-pests-and-diseases-damaging-holly-bushes.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/growing-holly-bushes.htm
It appears that my new holly bushes have been stripped bare over the winter by bunnies. All the leaves are gone, but the stalks remain. Will they survive? What can I do?
If the Holly is cut back it should sprout new leaves from the area where the leaves joint the stem.
If the bark is eaten off of the branches, they probably are gone and should be pruned back to intact branches.
Wait until spring to see what emerges before making decisions on removal of the Holly.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/growing-holly-bushes.htm
My large holly bush is covered with a black covering on all the leaves. Is this a "fungus" and is there a possibility of eliminating it, or must the bush be cut down?
This could be Sooty Mold, it is caused by pests on the plants.
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
Neem Oil can be used to treat the pests.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
Please review the links below, as Holly can suffer other diseases that you can access the plants symptoms with.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/diseases-of-holly-bushes-pests-and-diseases-damaging-holly-bushes.htm
https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-problems-holly-leaf-spot-or-holly-tar-spot.htm