When to Plant Dianthus in Michigan

China pinks (Dianthus chinensis) are a reliable cool-season annual offering fringed blooms with a spicy-sweet clove fragrance. They perform best in the cool temperatures of spring and fall, providing vivid color in beds and borders when summer annuals haven't kicked in yet. In warmer zones they are grown as fall–winter–spring annuals. The compact mounding habit and clean foliage make them excellent edging and container plants.

Michigan spans USDA hardiness zones 4a, 4b, 5a, 5b, 6a, 6b (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

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Click your county for exact Dianthus planting dates based on your local frost dates.

Hover over a county to see details. Click to view planting guide.

Dianthus Planting Calendar for Michigan

▸ Zone 4a ~145 day growing season · Full guide →

Last frost: May 6 · First frost: September 28 · 145 day season

Activity	When	Date Range
Start Indoors	March 4	Mar 4 – Mar 18
Transplant Outdoors	April 29	Apr 29 – May 13
Direct Sow	April 15	Apr 15 – May 6
Bloom	June 17	Jun 17 – Aug 19

▸ Zone 4b ~155 day growing season · Full guide →

Last frost: May 1 · First frost: October 3 · 155 day season

Activity	When	Date Range
Start Indoors	February 27	Feb 27 – Mar 13
Transplant Outdoors	April 24	Apr 24 – May 8
Direct Sow	April 10	Apr 10 – May 1
Bloom	June 12	Jun 12 – Aug 21

▸ Zone 5a ~166 day growing season · Full guide →

Last frost: April 25 · First frost: October 8 · 166 day season

Activity	When	Date Range
Start Indoors	February 21	Feb 21 – Mar 7
Transplant Outdoors	April 11	Apr 11 – Apr 25
Direct Sow	March 28	Mar 28 – Apr 18
Bloom	May 30	May 30 – Aug 15

▸ Zone 5b ~178 day growing season · Full guide →

Last frost: April 18 · First frost: October 13 · 178 day season

Activity	When	Date Range
Start Indoors	February 14	Feb 14 – Feb 28
Transplant Outdoors	April 4	Apr 4 – Apr 18
Direct Sow	March 21	Mar 21 – Apr 11
Bloom	May 23	May 23 – Aug 15

▸ Zone 6a ~193 day growing season · Full guide →

Last frost: April 10 · First frost: October 20 · 193 day season

Activity	When	Date Range
Start Indoors	February 13	Feb 13 – Feb 27
Transplant Outdoors	March 27	Mar 27 – Apr 10
Direct Sow	March 13	Mar 13 – Apr 3
Bloom	May 15	May 15 – Aug 14

▸ Zone 6b ~205 day growing season · Full guide →

Last frost: April 3 · First frost: October 25 · 205 day season

Activity	When	Date Range
Start Indoors	February 6	Feb 6 – Feb 20
Transplant Outdoors	March 13	Mar 13 – Mar 27
Direct Sow	March 6	Mar 6 – Mar 27
Bloom	May 1	May 1 – Jul 31

Growing Tips for Michigan

Start seeds indoors 8–10 weeks before last frost for spring transplants, or direct-sow in early spring as soon as soil can be worked — seeds tolerate light frost. Can also be direct-sown in late summer for fall bloom. Plant in full sun with excellent drainage; poorly drained soil causes crown rot. Deadhead regularly to extend bloom. In zones 8–10, plant as a fall annual for winter– spring color; plants decline in summer heat.

Dianthus in Other States

Frequently Asked Questions

When should I plant Dianthus in Michigan?

Planting dates for Dianthus in Michigan depend on your USDA zone. Michigan spans zones 4a, 4b, 5a, 5b, 6a, 6b. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Michigan for planting?

Michigan contains USDA hardiness zones 4a, 4b, 5a, 5b, 6a, 6b. Your specific zone depends on your location within the state — northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

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