Blog

When to plant Dahlias in Ellsworth County County,

Spring Dahlias in Ellsworth County County goes in April 22–May 13, once nighttime temps stop dipping near freezing.

When to Plant Dahlias in Ellsworth County, KS

Ellsworth County, Kansas Zone 6b June

Ellsworth County, Kansas gardeners: here's your June plan

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

Avg. last frost April 15
Avg. first frost October 23
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 14.7 hrs
Looking ahead to July
  • First harvests: dahlias

Instant PDF download. No spam, unsubscribe any time.

Dahlias (Dahlia spp.) are the undisputed stars of the late-summer and fall garden, producing an extraordinary range of flower forms — from compact pompons to dinner plate-sized blooms spanning 12 inches — in virtually every color except true blue. Blooming from midsummer until the first hard frost, a single tuber grows into a massive, flower-laden plant that can produce dozens of cut flowers per week. Modern breeding has expanded the palette and forms dramatically; the American Dahlia Society recognizes over 20 flower forms. Extremely rewarding for gardeners willing to invest in the planting, staking, and (in cold zones) annual lifting of tubers.

Ellsworth County, Kansas is in USDA Zone 6b. The average last spring frost is April 15 and the first fall frost is October 23, giving you a growing season of approximately 191 days.

At an elevation of 659 feet, Ellsworth County receives approximately 21.5 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Dahlias during the growing season.

Bulb Blooms in Summer Pollinator-friendly Good for cutting
Ellsworth County, KS (Zone 6b) Moderate season
191 days
Last Spring Frost April 15
191 growing days
First Fall Frost October 23

Ellsworth County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.6

Drainage

Well Drained

Dahlias Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 15 Transplant: Apr 19 🌸 Bloom: Jul 5 – Oct 25
Recommended (50%) ✗ May not fit
Start indoors: Mar 18 Transplant: Apr 22 🌸 Bloom: Jul 8 – Oct 28
Safe Start (90%) ✗ May not fit
Start indoors: Mar 31 Transplant: May 5 🌸 Bloom: Jul 21 – Nov 10

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 Ellsworth County

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

Soil pH

Your soil pH (6.2–7.6) overlaps with Dahlias's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.8%). Annual compost additions will help Dahlias.

How to Plant Dahlias

5"
Planting Depth
18"
Between Plants
24"
Between Rows

Succession Planting Dahlias

3
successive plantings in your 191-day season

Sow every 8 weeks. Last sowing by Jun 25 to harvest before frost.

Dahlias Water Budget

Plant needs
1.0″/week
Rainfall provides
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,075 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Dahlias

Dahlias needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Dahlias Needs Rainfall You Supplement Action
Jan 0.5" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.2" 0" ❄️ Dormant
Apr 4.3" 2.1" 2.2" 🚿 Regular watering
May 4.3" 3" 1.3" 💧 Light watering
Jun 4.3" 3.8" 0.5" 💧 Light watering
Jul 4.3" 2.6" 1.7" 💧 Light watering
Aug 4.3" 2.8" 1.5" 💧 Light watering
Sep 4.3" 2.2" 2.1" 💧 Light watering
Oct 4.3" 1.3" 3" 🚿 Regular watering
Nov 0.7" 0" ❄️ Dormant
Dec 0.5" 0" ❄️ Dormant

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

Dahlias 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.

Dahlias needs ~1,662 GDD — county provides 3,342 GDD Excellent fit

Dahlias Planting Timeline — Ellsworth County, KS

Dahlias Planting Calendar

Activity When Date Range
Start Indoors March 18 Mar 18 – Apr 1
Transplant Outdoors April 22 Apr 22 – May 6
Direct Sow April 22 Apr 22 – May 13
Bloom July 8 Jul 8 – Oct 28

Plant 5" deep · 18" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

70–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

191 days in Ellsworth County

Growing Tips for Dahlias in Ellsworth County

Direct sow Dahlias outdoors after April 15 in Ellsworth County when soil has warmed and frost danger has passed.

Common pests for Dahlias in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

Ellsworth County receives only 22" of rain annually. Dahlias needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Plant tubers after all danger of frost has passed and soil temperature reaches 60°F — typically 1–2 weeks after last frost in most zones. Lay tubers horizontally 4–6 inches deep with the eye (growth point) facing up. Do not water until sprouts emerge; wet soil rots dormant tubers. Stake tall varieties (over 3 feet) at planting time to avoid root disturbance later. Pinch growing tips at 12–16 inches to encourage branching and more blooms. Deadhead regularly to extend the blooming season. In zones 8b and warmer, tubers can overwinter in the ground with a layer of mulch. In zones 3–8a, lift tubers after the first killing frost, cure for a week, and store in slightly damp vermiculite or peat at 40–50°F until spring. Divide tubers every year or two; each division must have an eye (bud) to grow.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Dahlias in Ellsworth County, KS?

Ellsworth County is in Zone 6b with an average last frost of April 15. Plan your Dahlias planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ellsworth County, KS?

Ellsworth County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 15 and first fall frost is October 23.

When should I plant Dahlias in Ellsworth County County, ?

In Ellsworth County County, , plant Dahlias after the last frost (around April 15) and before the first frost (around October 23). Best results when soil holds above 50°F.

What growing zone is Ellsworth County County, for Dahlias?

Ellsworth County County sits in USDA Zone 6b. Dahlias grows reliably in zones 3a through 10b, so it's a good fit here.

Can Dahlias grow in Ellsworth County County's climate?

Yes — Dahlias grows well in Ellsworth County County's temperate climate. Ellsworth County County averages a 191-day frost-free season, with last frost around April 15 and first frost around October 23.

🌱

Your Ellsworth County Garden Planner — Free

A 22-page printable planner built for Ellsworth County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Ellsworth County, KS. 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.