Big Blue

[Big Blue]

Was giving a outdoor blueberry strain in a pot, it’s about ten to twelve weeks old. When would be a good time to start topping? I’m new to this.

[Saturnalia]

Hi Big Blue. Welcome.
If the plant is healthy and well established you could start topping once she has around 6 nodes or more.
Am interested when you say 'outdoor'. Hopefully it's either indoors now, or you're in the southern hemisphere, or you live somewhere with no frost at all.....