How to Plant Dahlia Tubers? A Detailed Guide to the Planting Method

Planting dahlia tubers requires forcing them to sprout, then taking cuttings from the new shoots, or dividing the larger tubers before planting. Choose a sandy soil with good drainage; after the tubers sprout, keep them in a sunny spot.

How to Plant Dahlia Tubers

1. Planting Method

When planting dahlias, it is best to first force the tubers to sprout so that their growth points clearly emerge. After sprouting there are two options: one is to take cuttings directly from the new shoots while replanting the original tuber, which allows you to propagate more plants. The other is to divide the larger tubers and then plant them; you can also plant them directly after sprouting.

2. Growing Conditions

1. Give them enough room for vegetative growth, because the underground part of a dahlia is quite large, so when planting, the pot should be at least 20 cm or more; when planting in the ground, the planting hole should also be at least 20 cm or more.

2. Dahlia tubers are prone to waterlogging, so the soil used must be a loose, fertile sandy loam with especially good drainage, to prevent waterlogging during its growth period.

Loose, fertile sandy loam with especially good drainage

3. Before forcing sprouting, it is best to soak the tubers in a fungicide to prevent bacteria from infecting wounds; generally, keeping the temperature for the sprouts steady at 15 degrees or above is enough.

4. Dahlias need long hours of light during cultivation, so after the tubers sprout, place them in a sunny spot so they can grow strong and vigorous.