How to Grow Dianthus

Sweetness Dianthus


  • Perennial, but flowers in the first year
  • Compact dwarf variety
  • Extremely variable flowers
  • Fleuroselect Award Winner
  • Blooms July to October

Product Description

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Dianthus plumarius. Sweetness Dianthus seeds are the Fleuroselect award winning variety and much loved for their ability to produce flowers in the first year of growth. The variable, frilled, pink to white flowers appear from July to October atop stems that grow only 15cm (6″) tall. Try it in containers or raised beds. Dianthus is quite drought tolerant, so it is a good option for xeriscaping. This variety of Dianthus is easy to grow from seeds. Mulch in winter if really cold weather is expected, or simply grow it as an annual with new seeds each spring.


How to Grow Dianthus

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Print Friendly, PDF & Email

Our Dianthus seeds produce hardy perennial plants that are colouful, drought resistant, and bloom in the first year. Learn how to grow Dianthus from seeds in our simple online growing instructions. These short growing flowers are widely variable and work well in raised beds, window boxes, containers, and even hanging baskets. Add colour and variety to your organic flower garden by growing Dianthus from seeds.


Latin: Dianthus plumarius
Family: Caryophyllaceae

Season & Zone
Exposure: Full sun to partial shade
Zone: 2-10

Start Dianthus seeds indoors 8 to 10 weeks before transplanting out, or direct sow them in early spring or early autumn so that the seeds may be exposed to frost. Ideal temperature: 15-21°C (60-70°F). Seeds germinate in about 10 days.

Just cover the small seeds very lightly with soil. Aim to space plants 15-23cm (6-9″) apart.

Grow in rich, well drained soil with a pH range of 6.0-7.5. Water established plants only during dry spells. Cut back the short stems after flowering, and be sure to mulch if very cold weather is expected. Replenish with new seeds every 3-4 years.



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