How to Grow Dahlias

Dahlias are so big and beautiful and can be grown from tuners. You can even save tubers from flowers you grow and plant them again next year. This blog is all the basic care needs of Dahlias to help you grow an beautiful Dahlia flower garden of your own to make your chateau shine this season.

Sun – Dahlias need 6 to 8 hours of direct sunlight everyday in order to grow and be able to bloom.

Soil – Lose well draining soil is prefect for Dahlias. It helps the water to drain quickly and easily to the tubers but wont retain so much water that they start to rot.

Spacing – They need 12 to 18 inches of space in order to grow. The reason for this is because dahlias need space to make tubers that their roots are attached to. These tubers can get pretty big so making sure that they get at least 12 inches of space will make them grow bring and strong.

Water – Dahlias need a lot of water. The reason for this is because their tubers grow very deep under ground. Heavily water Dahlias once are twice a week making sure to soak them so the water can reach the tubers.

Food – Fertilizing Dahlias is very important and needs to be done at least once a month once the flower buds start to form. We have been able to grow big beautiful Dahlias without fertilizing them but the soil we used when planting was very high in organic compost.

Annual or Perennial – Dahlias are perennials and will come back year after year if the temperature of the soil doesn’t drop below 32°F/0°C for more than a couple of hours. If you have winters that snow it may be best to bring your tubers indoors and place them in a dark, cool, and dry place.

Climate/Hardiness – These flowers are not hardy and well die in a frost, the tubers could even die if the frost last for longer than a couple of hours.

Harvest – Dahlias flowers can be harvested at any time but is it best to wait an harvest the tubers after the flower stalks have dried.

Transplant – Once Dahlias start to grow they should not be move for transplanting. This roots an tubers are very fragile especially in the beginning phases, and can cause they plant to stop growing or slow down its growth.

Fact Fact: Some Dahlia tubers are edible and can grow as big as potatoes. The photo above is of a Dahlia tuber I mistook for a large potato because it some how got mixed in a potato patch from the previous year.

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