Posted: 07/05/2016 at 11:24
If in doubt what new plants will do google as much as possible BEFORE buying them
I also check growth/spread before the end of the firsf summer...you can get a very good idea from the way the roots are
i love salvias but many are invasive....guaranitica and ulignosa for example spread alarmingly in my sandy loam. I want them though so I divide them every year and pot them up. Euphorbia fireglow and similar will send roots metres away as do many artemisias. Lysimachia too. Artemisias will take over if you have the wrong varieties....limelight is an absolute nightmare as is houttynia chameleon. Bamboos of course are notorious thugs in the main.....only recently a neighbour had her bamboo dug up last summer and it is now sending up shoots over her and hee neighbour's garden
I am growing some new to me plants this year and I will watch them carefully.
get to know your plants and take precautions