Tips on how to grow and care for dianthus


Dianthus can do your garden and landscapes much justice, these garden beauties are a real show stopper with their array of flowering colors which are so dazzling. Dianthus is native to Asia, Northen Europe, China, Alaska, and South Africa. These garden beauties are a part of the carnation family and produce a spicy fragrance.

Dianthus can be classified as perennials, hardy annuals or biennial, these plants can get up to 6-18 inches tall. Liven up your spring and summer gardens with dianthus which are truly amazing, if you are interested in the growth and care of dianthus then tag along with me as we take a closer look at the world of dianthus which can transform your garden that is such a delightful treat.

Planting Location

When planting dianthus, install in a garden area that gets full sunlight, these garden beauties will perform at their best under these conditions.

Soil Type

The soil type should be well- drained with a ph that is slightly alkaline to neutral.

Watering Methods

When watering your dianthus especially during the summertime ensure that the soil is somewhat moist and not waterlogged. Allow the soil to dry out a bit before giving your dianthus another drink.

Fertilizing Methods

A slow release fertilizer such as 5-10-5 or 5-10-10 will keep your dianthus flowering beautifully.

Garden insect pests of dianthus

Keeping an eye out for these pests will have your dianthus growing their best.

  • Aphids
  • Spider Mites
  • Slugs

Aphids and Spider Mites

Aphids and spider mites are tiny insects which can cause huge damage. These garden insect pests will suck the plant’s fluids causing yellowing of the leaves followed by leaf drop. To bring these garden insect pests under control the use of insecticidal soap will eliminate them. Before applying read and follow the manufacturer’s label because the label is the law.


Because dianthus is a soft luscious plant slugs will eat the plant parts. The use of snail bait or hand picking them and throwing them into a bucket of soapy water will control them.

Disease of dianthus

Watch for these diseases and treat as soon as they appear.

Butterflies On Dianthus

  • Rust
  • Greasy Blotch
  • Fusarium Wilt
  • Alternaria Leaf Spot
  • Botrytis Blight
  • Bacterial Slow Wilt


The leaves develop small blister that has sores which have a rust red color. Applying a fungicide will offer some help.

Greasy Blotch

The leaves develop a web pattern which causes the leaves to appear yellow, the leaves will eventually die. To combat this issue the humidity level should be below 85%

Fusarium Wilt

This disease appears as yellowing of the leaves along with wilting and stem rot. It is best to choose plants which are healthy to avoid this disease altogether.

Alternaria Leaf Spot

The plant leaves develop spots which are small and purple, the leaves will yellow and the center will turn brown. The use of a fungicide will offer some help.

Botrytis Blight

Botrytis blight effects plants by causing the plant’s petals to be covered with a gray fungal growth, the petals will also turn brown. keep the plant bed free of debris, plants should be properly spaced to provide good air circulation, stay clear of irrigating plants too late in the day, applying a fungicide will help.

Bacterial Slow Spot

This disease cause stunting, twisting and wilting. The plant’s leaves develop narrow green-yellowish leaves, the lower leaves will eventually die. Plants which has these symptoms should be destroyed.

Ideas on where to install dianthus

Here are just a few ideas on where to install your dianthus.

1. Installing dianthus in a garden plant bed as a front drop will work wonders.

2. Plant them around the trunk of a tree.

3. What about a garden walking pathway?

4. Install them in containers and place the containers on either side of your front door.

5. Place the container on your porch or patio.

6. Install them alongside a wall.

7. Place them alongside a fenced area.

Container grown dianthus

Container gardening makes a great choice in growing dianthus,  the container should have drain holes to allow excess water to drain. The soil should also be a well-drained soil which is slightly alkaline, keep the soil somewhat moist and not waterlogged which will encourage root rot. The use of a slow-release fertilizer during the growing season will keep your dianthus blooming nicely. Before applying fertilizers read and follow the manufacturer’s label because the label is the law. Keep a watchful eye for garden insect pests and disease as stated earlier.

Deadheading dianthus

Deadheading is a great way for your dianthus to put fort new flower bloom. When the older bloom starts to fade this is a sure sign that the next step is deadheading. With a sharp pair of scissors or hand pruner that is sterilized prune your dianthus. The cut should be made back to the base right above the nearest set of leaves and before you know it you will have fresh beautiful flowers in full bloom.

The final word

Dianthus are beautiful flowering plants that can work wonders. These garden beauties are worth the investment, the beautiful flower bloom seems to say that spring and summer is here giving such a great feeling. Go ahead and give these amazing plants a try and take your gardens and landscapes to the next level. Dianthus bring that much need flavor which will spice up your garden as you enjoy their beauty.

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