How do I to get deep rooted stuck plant out of a beautiful resin huge planter? It is over grown and need to be transplanted. I have tried cutting around the edge of the pot to loosen the root, also tried water. I think it is just grown into the resin. Help, I have tried everything. I do not want to cut pot, if at all possible.
It is possible that it has grown into the pot. These roots should only be small feeder roots that will cut easily. If you water it well, then use a long thin strip of metal (like an old window blind slat or a serrated bread knife) you should be able to cut away a good many of these feed roots. Then you may want to ask someone strong to help you pull the plant out. One person can hold the pot while the other (stronger person) should be able to get a good handhold in the soil/roots itself. If the plant has grown into the resin, it is pretty potbound and the rootball should be pretty compact and able to be gripped.
What do I put in the bottom of my pot when there are no drain holes? I don't want to drill any in the bottom.
A layer for the water to drain to is advisable. Some people use rocks and others use styrofoam peanuts. Both will work.
Should you put plastic containers in the bottom of a large pot you are planting a tree in to keep the pot lighter, or does that leave too much air space and leave the tree more likely to freeze?
No, this is not necessary, though it won't hurt either. These articles will help with growing potted trees: https://www.gardeningknowhow.com/ornamental/trees/tgen/growing-trees-in-containers.htm
What are the best small trees to grow in a container - full sun - patio - in Austin, TX?
Personally, I would go with a citrus tree. There are dwarf varieties that stay small and still produce fruit. Brugmansias are another fun option.
I have two large clay pots (22 inch and 24 inch diameter) and would like to put a tree in each. We live in the upstate of South Carolina. This area gets morning sun but is not completely shaded until evening. I'd like a slow growing, low maintenance tree. It doesn't matter if it's an evergreen or not. I would just like some choices and then be able to go look at them.
The following articles should be of some help to you:
Which plants prefer to be (or cannot safely survive a replant) root bound vs. repotted into a larger pot?
This article should help with that: https://www.gardeningknowhow.com/houseplants/hpgen/should-you-repot-your-plant-happy-root-bound-house-plants.htm
What can I do for a potted tree that may not have survived the harsh winter we had in the midwest? My husband thinks it is still alive, but I'm not sure.
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/plant-problems/environmental/tips-for-saving-cold-damaged-plants.htm