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When to Plant Larkspur in Nance County, NE

Nance County, Nebraska Zone 5b June

This month in Nance County, Nebraska

Each item below is timed to Nance County, Nebraska's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 27
Avg. first frost October 8
Soil temp (4") 70°F
Watering Low
Pest pressure High
Daylight 15 hrs
  1. Bring in the larkspur

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

July will be here before you know it — start on
  • First harvests: larkspur

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Larkspur (Consolida ajacis) is a cool-season annual that produces tall, delicate spires of blue, purple, pink, and white flowers reminiscent of its perennial cousin, delphinium. Direct-sown into cold soil or fall-sown in mild-winter climates, it blooms in spring before going to seed as summer heat arrives. An excellent cut flower and cottage-garden staple.

Nance County, Nebraska is in USDA Zone 5b. The average last spring frost is April 27 and the first fall frost is October 8, giving you a growing season of approximately 164 days.

At an elevation of 797 feet, Nance County receives approximately 23.9 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Larkspur to ensure they mature before fall.

Annual Blooms in Spring Pollinator-friendly Deer-resistant Good for cutting
Nance County, NE (Zone 5b) Moderate season
164 days
Last Spring Frost April 27
164 growing days
First Fall Frost October 8

Nance County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.4

Drainage

Well Drained

Larkspur Planting Risk Windows

Early Start (70% safe) ✓ Fits season (39 days to spare)
Transplant: Apr 22 🌸 Bloom: Jul 1 – Aug 26
Recommended (50%) ✓ Fits season (38 days to spare)
Transplant: Apr 27 🌸 Bloom: Jul 6 – Aug 31
Safe Start (90%) ✓ Fits season (35 days to spare)
Transplant: May 14 🌸 Bloom: Jul 23 – Sep 17

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 Nance County

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

Soil pH

Your soil pH (6.6–7.4) overlaps with Larkspur's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Nance County is excellent for Larkspur — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.1%) — Larkspur will thrive.

How to Plant Larkspur

0.1"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Larkspur

3
successive plantings in your 164-day season

Sow every 6.9 weeks. Last sowing by Jul 10 to harvest before frost.

Larkspur Water Budget

Plant needs
0.5″/week
Rainfall provides
0.6″/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 Larkspur

Larkspur 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 Larkspur Needs Rainfall You Supplement Action
Jan 0.6" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.7" 0" ❄️ Dormant
Apr 2.2" 2.7" 0" ✅ Rainfall sufficient
May 2.2" 3.3" 0" ✅ Rainfall sufficient
Jun 2.2" 4" 0" ✅ Rainfall sufficient
Jul 2.2" 3" 0" ✅ Rainfall sufficient
Aug 2.2" 2.7" 0" ✅ Rainfall sufficient
Sep 2.2" 2.3" 0" ✅ Rainfall sufficient
Oct 2.2" 1.4" 0.8" 💧 Light watering
Nov 0.9" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

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

Larkspur 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.

Larkspur needs ~919 GDD — county provides 2,009 GDD Excellent fit

Larkspur Planting Timeline — Nance County, NE

Larkspur Planting Calendar

Activity When Date Range
Direct Sow March 30 Mar 30 – Apr 20
Bloom June 8 Jun 8 – Aug 3

Plant 0.1" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow
May
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

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5b

📆 Growing Season

164 days in Nance County

Growing Tips for Larkspur in Nance County

Direct sow Larkspur outdoors after April 27 in Nance County when soil has warmed and frost danger has passed.

Nance County receives only 24" of rain annually. Larkspur needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Larkspur does not transplant well — direct-sow only. In cold climates (zones 2–6), sow directly in early spring as soon as soil can be worked, 4–6 weeks before last frost; cold soil improves germination. In zones 7–10, fall-sow 8–10 weeks before first frost for spring bloom. Press seeds lightly into soil; they need darkness to germinate — cover with 1/8–1/4 inch of soil. Thin to 6–12 inches to prevent powdery mildew. Allow seed pods to mature and self-sow for naturalized colonies. All parts are toxic if ingested.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Larkspur in Nance County, NE?

Nance County is in Zone 5b with an average last frost of April 27. Plan your Larkspur planting based on this frost date — see the calendar above for exact timing.

What planting zone is Nance County, NE?

Nance County, Nebraska is in USDA Hardiness Zone 5b. The average last spring frost is April 27 and first fall frost is October 8.

🌱

Your Nance County Garden Planner — Free

A 22-page printable planner built for Nance County (Zone 5b). 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 Nance County, NE. Local conditions may vary. Last updated: June 2026.

Sources & credits

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