There does seem to be a lot of conflicting advice regarding natives, whether it be re-potting or collecting.
Personally I dont have much experience so take it with a grain of salt.
I collected many young Callistemon and Casuarina seedlings in September with about 80% success rate. These were all growing in and around a creek which surges several times a year so the soil was very wet, each tree was pulled out by hand and long tap roots were trimmed to encourage radial growth.
I then collected a large waterswept Callistemon in mid December from the same creek growing next to a small weir. Its been ravaged by floodwaters over the years. At this stage it hasnt put out any growth but there is still a bit of green on the tree and I did spot a few roots shoting out. Ideally i would have kept it in shade until shoots appeared but it was too large to put anywhere so its been in full sun since collection. This guy was growing in water though so ive got it in a large tub of diatomite, soil, and perlite with drainage holes close to the rim, so hes basically growing in seasol.
Growing conditions and micro-climate will always impact when we do things. I say if the tree is healthy, go for it. Alternatively, give it a bit of a cut back and collect after the shoots harden next spring. If you collect now, standard aftercare should see it thrive. Its a nice stump and will make a great carving project
