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When to plant Dianthus in Scott County, MN

For Dianthus in Scott County, the safe spring window opens around April 3 and closes around April 24. Last expected frost is April 24, first fall frost October 9, giving a 168-day growing season.

When to Plant Dianthus in Scott County, MN

Scott County, Minnesota Zone 4b June

June to-do list for Scott County, Minnesota

June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Scott County, Minnesota.

Avg. last frost April 24
Avg. first frost October 9
Soil temp (4") 63°F
Watering Low
Pest pressure High
Daylight 15.4 hrs
  1. Start dianthus under lights

    You're about 15 weeks out from your last frost — the perfect window to get these germinating indoors.

  2. Start harvesting dianthus

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

Before July arrives, get these ready
  • First harvests: dianthus

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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.

Scott County, Minnesota is in USDA Zone 4b. The average last spring frost is April 24 and the first fall frost is October 9, giving you a growing season of approximately 168 days.

At an elevation of 1,105 feet, Scott County receives approximately 39.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80°F, so choose short-season varieties of Dianthus to ensure they mature before fall.

Annual Blooms in Spring Pollinator-friendly Deer-resistant Good for cutting Fragrant
Scott County, MN (Zone 4b) Moderate season
168 days
Last Spring Frost April 24
168 growing days
First Fall Frost October 9

Scott County Soil Profile

Soil Type

Silt Loam

Soil pH

5.9-7

Drainage

Well Drained

Dianthus Planting Risk Windows

Early Start (70% safe) ✓ Fits season (57 days to spare)
Start indoors: Feb 13 Transplant: Apr 10 🌸 Bloom: May 29 – Aug 7
Recommended (50%) ✓ Fits season (56 days to spare)
Start indoors: Feb 20 Transplant: Apr 17 🌸 Bloom: Jun 5 – Aug 14
Safe Start (90%) ✓ Fits season (53 days to spare)
Start indoors: Mar 11 Transplant: May 6 🌸 Bloom: Jun 24 – Sep 2

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Scott County

How your county's soil matches Dianthus's growing requirements.

Soil pH

Your soil pH (5.9–7.0) overlaps with Dianthus's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Scott County is excellent for Dianthus — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.5%) — Dianthus will thrive.

How to Plant Dianthus

0.1"
Planting Depth
8"
Between Plants
10"
Between Rows

Succession Planting Dianthus

3
successive plantings in your 168-day season

Sow every 6.9 weeks. Last sowing by Jul 21 to harvest before frost.

Dianthus Water Budget

Plant needs
0.5″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Dianthus

Dianthus needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Dianthus Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 2.2" 4.5" 0" ✅ Rainfall sufficient
May 2.2" 4.7" 0" ✅ Rainfall sufficient
Jun 2.2" 4.5" 0" ✅ Rainfall sufficient
Jul 2.2" 5" 0" ✅ Rainfall sufficient
Aug 2.2" 4" 0" ✅ Rainfall sufficient
Sep 2.2" 3.7" 0" ✅ Rainfall sufficient
Oct 2.2" 3.1" 0" ✅ Rainfall sufficient
Nov 2.5" 0" ❄️ Dormant
Dec 2.4" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Scott County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Dianthus Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Dianthus needs ~700 GDD — county provides 1,680 GDD Excellent fit

Dianthus Planting Timeline — Scott County, MN

Dianthus Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 – Mar 6
Transplant Outdoors April 17 Apr 17 – May 1
Direct Sow April 3 Apr 3 – Apr 24
Bloom June 5 Jun 5 – Aug 14

Plant 0.1" deep · 8" apart · Rows 10" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors
April Transplant Outdoors Direct Sow
May Transplant Outdoors
June Bloom
July Bloom
August Bloom
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 4b

📆 Growing Season

168 days in Scott County

Growing Tips for Dianthus in Scott County

Direct sow Dianthus outdoors after April 24 in Scott County when soil has warmed and frost danger has passed.

General growing tips

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.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Dianthus in Scott County, MN?

Scott County is in Zone 4b with an average last frost of April 24. Plan your Dianthus planting based on this frost date — see the calendar above for exact timing.

What planting zone is Scott County, MN?

Scott County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is April 24 and first fall frost is October 9.

When should I plant Dianthus in Scott County, MN?

In Scott County, MN, plant Dianthus after the last frost (around April 24) and before the first frost (around October 9). Best results when soil holds above 50°F.

What growing zone is Scott County, MN for Dianthus?

Scott County sits in USDA Zone 4b. Dianthus grows reliably in zones 3a through 10b, so it's a good fit here.

Can Dianthus grow in Scott County's climate?

Yes — Dianthus grows well in Scott County's temperate climate. Scott County averages a 168-day frost-free season, with last frost around April 24 and first frost around October 9.

🌱

Your Scott County Garden Planner — Free

A 22-page printable planner built for Scott County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Scott County, MN. Local conditions may vary. Last updated: June 2026.

Sources & credits

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