i discovered a lupine growing in one of my metal containers.it is only 400mililitres.so i took it to the kitchen turned it on its side and opened the bottom with a can -opener.put it back on a bigger container exposed to soil(next to a basil plant)i hope it will send its roots beyond its small space now to be a big lupine.the cut was quite neat so i hope the roots wont get damaged on there way out.also i wont water it for a few days to create emergancy and force the roots to look for nutrition.
i hope this is a good tip.its actually a question.wether i did right
