the down side(s) of (african) acacia...
Hi
I have a Galpinii that's coming along nicely, about 8cm at the base, also just going for the Pierneef style.
I bought it in Windhoek (Namibia) and the first two years I needed to trim the leaves back to the last two leaflets on a daily basis to prevent rediculously long internodes.
I spent the past 18 months living and working in the far South of Namibia, and there the tree really started looking nice. It was growing well, but the leaves were considerably smaller - I just watered and fed it. No idea what caused this, suspect it was the harsh sunlight.
I tried a new technique this past autum, I broke/cracked a few of the internodes that were too long and simply sealed the break with wood glue, this was to give the branches more movement and it seems to have worked a treat.
Ditto on not cuting too close to the node, I leave about 1cm and trim back 1/2 months later.
I also have a small Acacia Erubescens in training as a informal upright, it has incredible taper and it's a good looking tree, but it has problems.
Bare rooting Acacias seems to be a good way to kill them, I've slip potted this tree twice, but it's struggling and I suspect it seriously needs the growing medium replaced.
I've considered hosing out half the soil, replacing it, apply patience and then do the other half, but I haven't convinced myself about that option......
I also have an Acacia Hebeclada planted from seed, and I suspect this little one will steal the show in a few years, I'm taking it the twin trunk route.
BIG problem with Acacia........
Is getting their photos taken.....
I don't know what you call the movement of their leaves in responce to light levels, but it seems I'm always on my way to work when they are at their best.
I've found days were it starts and stays cloudy is best, but you have to be quick anyway.
Specifically the Galpinii looks great when all the leaflets are louvered for maximum exposure (canopy nice and full), while from 5/6pm onwards most people reckon "it's dying"......
Early on in the bonsai game I almost diverted into Acacia collecting, but the Hebeclada was the only seeds that germinated from about 60 seeds I collected on fishing trips.....
Cheers
Gerhard