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When to Plant Dianthus in Scotts Bluff County, NE

Scotts Bluff County, Nebraska Zone 5a July

Your July planting checklist for Scotts Bluff County, Nebraska

If you only do a handful of things in the garden this July, make it these. They're sequenced around your zone's frost timing.

Avg. last frost May 13
Avg. first frost September 25
Soil temp (4") 74°F
Watering Moderate
Pest pressure High
Daylight 14.8 hrs
  1. Start dianthus indoors

    You're about 11 weeks out from your last frost — the perfect window to get these germinating indoors.

  2. Pick dianthus

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

Before August 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.

Scotts Bluff County, Nebraska is in USDA Zone 5a. The average last spring frost is May 13 and the first fall frost is September 25, giving you a growing season of approximately 135 days.

At an elevation of 1,080 feet, Scotts Bluff County receives approximately 32.2 inches of rainfall annually with predominantly loam soil. Summer highs average 83°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
Scotts Bluff County, NE (Zone 5a) Short season
135 days
Last Spring Frost May 13
135 growing days
First Fall Frost September 25

Scotts Bluff County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.5

Drainage

Well Drained

Dianthus Planting Risk Windows

Early Start (70% safe) ✓ Fits season (19 days to spare)
Start indoors: Mar 6 Transplant: Apr 24 🌸 Bloom: Jun 12 – Aug 28
Recommended (50%) ✓ Fits season (23 days to spare)
Start indoors: Mar 11 Transplant: Apr 29 🌸 Bloom: Jun 17 – Sep 2
Safe Start (90%) ✓ Fits season (11 days to spare)
Start indoors: Apr 6 Transplant: May 25 🌸 Bloom: Jul 13 – Sep 28

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 Scotts Bluff County

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

Soil pH

Your soil pH (6.3–7.5) is within Dianthus's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Dianthus.

Organic Matter

Organic matter is moderate (3.6%). Annual compost additions will help Dianthus.

How to Plant Dianthus

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

Succession Planting Dianthus

2
successive plantings in your 135-day season

Sow every 6.9 weeks. Last sowing by Jul 07 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
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 2.1" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3" 0" ❄️ Dormant
May 2.2" 4.1" 0" ✅ Rainfall sufficient
Jun 2.2" 2.2" 0" ✅ Rainfall sufficient
Jul 2.2" 3.3" 0" ✅ Rainfall sufficient
Aug 2.2" 3.9" 0" ✅ Rainfall sufficient
Sep 2.2" 2.6" 0" ✅ Rainfall sufficient
Oct 2.9" 0" ❄️ Dormant
Nov 2" 0" ❄️ Dormant
Dec 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Scotts Bluff 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 ~858 GDD — county provides 1,653 GDD Excellent fit

Dianthus Planting Timeline — Scotts Bluff County, NE

Dianthus Planting Calendar

Activity When Date Range
Start Indoors March 11 Mar 11 – Mar 25
Transplant Outdoors April 29 Apr 29 – May 13
Direct Sow April 15 Apr 15 – May 6
Bloom June 17 Jun 17 – Sep 2

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Transplant Outdoors Direct Sow
May Transplant Outdoors Direct Sow
June Bloom
July Bloom
August Bloom
September Bloom
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: ideal

🗺️ USDA Zone

Zone 5a

📆 Growing Season

135 days in Scotts Bluff County

Growing Tips for Dianthus in Scotts Bluff County

Direct sow Dianthus outdoors after May 13 in Scotts Bluff 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 Scotts Bluff County, NE?

Scotts Bluff County is in Zone 5a with an average last frost of May 13. Plan your Dianthus planting based on this frost date — see the calendar above for exact timing.

What planting zone is Scotts Bluff County, NE?

Scotts Bluff County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 13 and first fall frost is September 25.

🌱

Your Scotts Bluff County Garden Planner — Free

A 22-page printable planner built for Scotts Bluff County (Zone 5a). 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 Scotts Bluff County, NE. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.