11/09/2026
You asked me to show the actual dividing, so here it is.
If your dahlia clump has already started sprouting, don’t be afraid to divide it.
You do NOT have to wait for every clump to sprout before chopping, but if you’re a beginner, those little sprouts can make dividing much easier. You can clearly see where the active eyes are and which part of the crown needs to stay with each tuber.
And if a sprout breaks off or gets damaged while you’re dividing, don’t panic. The tuber is not ruined. It can continue growing from lower growth points, much like a plant responds after pinching.
After dividing, I give my tubers a quick dip in a light fungicide solution to help reduce the risk of rot. I use Thor 500 WP, a captan-based fungicide available here in South Africa and then I let them dry before planting them back into the ground.
So the takeaway is simple: you don’t need to wait for sprouts, but when you’re learning to divide dahlias, visible growth can take a lot of the guesswork out of it.
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