It gets leggy before the leaves come out on the stalk. It is in dirt in my window that gets indirect southern sun. Also, how deep should it be planted? How wet should it be kept?
If it is getting leggy, it is likely not getting enough sunlight. I would recommend moving it to a brighter window or supplementing the light with a plant light or a fluorescent lamp.
As for pruning, this article will help:
https://www.gardeningknowhow.com/edible/fruits/avocado/pruning-avocado-trees.htm
If you already have it in dirt, how you have it planted should be fine. If the seed is showing above the soil, this is ok, or it is ok if it is not.
Water it when the top of the soil is dry to the touch. I tell people not to water on a schedule, but rather check the soil on a schedule and only water when the top of the soil is dry.
My avocado tree has reached the ceiling, as I have had it many years and it's been fine. However, my cat has been using the soil to do her business. Now all the leaves have fallen of, very devastating as it was such a lush looking tree. Anyways, my question is can I cut the stalks down (has about the three stalks), or should I only cut the branches that have sprouted from the stalks?
The leaves will actually regrow on the stems, if you fix the problem with the soil. The cat's urine has highly acidified the soil and it is killing the plant. You need to remove the soil and replace it with fresh. After that, try placing rocks or balls of foil on the soil as this will discourage her from using the soil again.
I was going to tie a dead avocado plant branch to the tomatoes. I planted tomatoes, and they germinated to about two to three inches, but then died. The pot was ten inches at the top. The soil was from outside of my house and was rich. I even put Miracle Grow in it to start the plant. I now have some vine tomatoes starting and pulled out the avocado stem; however, I have lost some already. They are about two inches in growth.
It was not the avocado. It was most likely a fungus called damping off. This article will explain more: https://www.gardeningknowhow.com/garden-how-to/seeds/what-is-damping-off.htm
My seedlings have reached six inches tall in the glass container with roots as long as nine inches and spreading leaves. I've been told to cut the tiny trees in half and they'll grow new leaves, and then this is the right time to plant them. I planted one without this method when the roots were still small and it grew to ten inches, growing a different series of leaves that grew large and died. I was told to pinch the plant at the top, which I did, and now a couple of the original nodes seem to be growing. What is the proper way to treat my tiny house trees?
Choose a few of the strongest shoots and cut away the rest. These will grow into the new trunks. The leaves will actually regrow on the stems. You should see swelling on either side of the stem at the top of the leaf node point in a bit. If you just want it to branch out, simply snip off the top of the plant, maybe just a leaf or two down on the main branch (but make sure you cut through the branch). This will force lateral growth to begin, which will make side branches and result in a bushier plant without too much damage to the plant.
The young avocado tree is outside on the patio and gets some sun. It is about 8 months old and has new leaf growth, but they turn a dark brown and fall off. New growth on top each time, but the same thing happens. What could be the problem?
It sounds like a watering issue. Increase watering. Plants in containers outdoors should be watered at least once a day.
I started an avocado tree from a pit about 9 months ago. It's now almost 5 feet tall. I believe the pot size is around 5 gallons. My question is in the leaves. The leaves along the main stem/trunk are drooping severely. It has no branches, only leaves. It continues to grow upward, but not outward. Is there something I can do to fix the droopiness? Should I prune the lower leaves? The tree is sharing a pot with a Moon Valley house plant that grew with it in a smaller pot. The roots of the two plants are very tangled and I was unable to separate them. They both seem to be doing well, other than the seemingly unnatural form of the tree. The leaves look great, just droopy. Please help. Thanks.
If you nip off the top 1/2 inch of the tree, this will force it to start branching out. This is a common issue with avocados and this will correct that.
As to the drooping leaves, this does indicate that the plant is not getting enough water. You can increase water or you can repot both plants together in a larger container.
If you root an avocado seed from an avocado you buy at the grocery store, when the tree grows, will it have fruit on it? Or do you have to graft the tree? Or something else? If you use the tree as a house plant, how should you trim it to keep it from growing too tall for the house? What size flower pot should it be planted in?
You probably won't get any fruit, especially if you choose to grow it as a houseplant, but it's still fun to try and the plant is quite attractive. These articles should help: https://www.gardeningknowhow.com/special/children/sprouting-avocado-pits-how-to-root-an-avocado-seed.htm
https://www.gardeningknowhow.com/edible/fruits/avocado/pruning-avocado-trees.htm