Robert,
It sounds like you might be able to use our Highlight tool for this. When you highlight a specific plant, you have the option to make a selection off of the plants highlighted. Further more, you can add additional plants to the Highlight based on similar plant characteristics and then turn this into a selection. Based on the complexity of what you are trying to select and move I'm sure you will still need to do some manual deselecting of areas and selecting of labels, maybe even implementing our Work Areas to help isolate your selections. Feel free to give it a try and see what you think.
https://www.landfx.com/index.php/docs/planting/planting-tools/editing-error-checking/item/1192-highlight-plant-tool.html
If you would like to give us examples of where a new tool would be useful for this then please send them to us so we can get a better understanding of what you are after. Thanks!