Dahlia Care: How to Care For Dahlias + Growing Tip

Dahlia flowers, symbols of kindness and grace, make beautiful additions to gardens or homes. Many varieties are available, so it is easy to find the dahlia you like. With a few simple tips in mind, caring for these unique Mexican flower Acoctli. They are native to Mexico and Central America, so you might find them flourishing in warmer climates. These flowers are mid-to-late-season blooms, peaking between summer and just before the first frost.

There are 42 varieties of dahlias in 14 groups, each with its unique shape and sizes. There are many dahlia flowers that can be single- or dual-flowered. Single blooms have a clearly defined centre, with only a few rows outside petals. Double-flowering varieties, however, are composed of multiple rows and petals that have no visible centre.

Many professional gardeners consider dahlias one of the most sought-after flowers due to their unusual petal arrangements. Their beauty dates back to Queen Victoria’s time when they were considered one of her favourite flowers, along with violets. Although these vibrant blooms can be grown easily, they are sensitive to sunlight and weather.

Types Of Dahlias 

There are more than 42 varieties and types of dahlias. They come in a variety of sizes, colours and textures. Although they are well-known for their vibrant colours and tightly-grouped florets, many varieties can be adapted to any garden’s aesthetic. Here are some of the most sought-after dahlia varieties.


This is the largest group of dahlias, and it’s no surprise that they come in many different shapes and colours. Formal and informal decorative dahlias are available — formal flowers have perfectly placed petals, while informal flowers have flat petals in odd places.


Pompon dahlias make a stunning and unusual sight. These globe-shaped flowers are small and delicate, with perfectly arranged petals around the stem. These delicate blooms can reach up to two inches in size.


Because of their stunning spikey petals, these flowers are easily spotted from miles away. Cactus dahlias can be double-flowering and are available in various sizes and colours. Their long, rolled petals make them a great choice for anyone looking to plant a striking flower in their garden.


These distinctive blooms have large, flat petals surrounded by a circle of smaller petals. These beautiful blooms are adorned with smaller petals of a different colour, creating a collar at the centre of the flower.

Some other varieties of dahlias are:

Peony: These single-flowering flowers have open centres and are available in a wide range of colours. Because the petals are irregularly formed, they give the bloom a fluffy and texture look.

Dahlia: This type of dahlia is open-centred and has long petals. You can choose to have one or two rows of petals.

Anemones-flowered: These stunning blooms feature a ring of flat petals surrounded by a dense grouping of long, tubular petals. These flowers are available in vibrant colours and make a great choice for bouquets.

Water lily: These Pink flowers are double-blooming, with both broad and sparsely-coloured petals. They are known for their bright colours and beautiful patterns. They make a great eye-catching flower!

How to Care For Dahlias?

Dahlias are lovely spring and are moderately easy to cultivate. They make a great addition to any garden. They are sensitive to cold. They need full sun, so be sure to watch them closely, especially during the first stages of their growth.


Dahlias need at least 6-8 hours of sunlight per day. To avoid burning your plant, if you live in hotter areas, place them in partially shaded areas during peak afternoon hours.


Dahlias are unlike other flowers in that they don’t require much water. Dahlias can survive in areas with plenty of summer rain. If not, water the plant deeply at least once or twice per week. The soil should always be moist. If the top layer of the soil appears dry, it is a sign that the plant needs water.


The soil temperature is crucial for the healthy growth of dahlias. These flowers should be planted in temperatures at least 60 degrees F. (a metal thermometer can help you check). Remember that dahlias can struggle in cold soil (less 50degF), so wait until spring/early summer to plant them.


Although dahlias can be toxic to pets, they can cause vomiting and diarrhea. You should be careful where your dahlias are placed if you have curious pets.

Problems & Pests

Pests: Dahlias are prone to attracting thrips, caterpillars, and earwigs. Slugs love dahlias as they are small and tender. You might want to consider relocating your dahlias if you are experiencing a problem with slugs.

Problems: Dahlias can be susceptible to fungal diseases like powdery mildew, common in dry and warm climates. If your plants have white powdery spots on their leaves, this is a sign of fungal disease, either trim the affected areas or use a fungicide to treat it.

Repotting & Propagation

Repotting: The thickened, underground section of the stem should be repotted in the early spring, eight weeks before the last frost. This gives the plant advantage and allows it to produce full-sized, healthy flowers by summertime.

Propagation: Dahlias are possible to propagate from cuttings, seeds, and tubers. If you prefer to propagate using cuttings, make sure to cut off the lower set of leaves. Then place them in a pot with good drainage. The cutting will begin to take root in a few weeks if the soil is kept moist.

After you have mastered the basics, let’s discuss some additional tips and questions to make growing easier.


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