Every gardener knows that buying plants is a very expensive business. Luckily, nature has a very clever way of enabling us to keep our costs down as it is entirely possible to propagate dahlia plants very successfully. To propagate simply means taking part of an existing plant to create a new, separate plant. The new plant will be genetically identical to the original plant. In the case of dahlias, propagation can be done by seed, taking cuttings or by splitting tubers. Dividing the tubers (roots) is by far the most straightforward method of propagating dahlias, giving good results almost every time if done correctly.