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When to plant Snapdragon in Floyd County County,

Spring Snapdragon in Floyd County County goes in March 16–April 6, once nighttime temps stop dipping near freezing.

When to Plant Snapdragon in Floyd County, IN

Floyd County, Indiana Zone 6b June

Your June game plan for Floyd County, Indiana

Here's what deserves your attention in Floyd County, Indiana this month. Everything below is tailored to Zone 6b and timed around your local frost dates.

Avg. last frost April 6
Avg. first frost October 28
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 14.7 hrs
  1. Start snapdragon indoors

    Starting these indoors now means sturdy transplants ready the moment your soil warms up.

  2. Collect snapdragon at their peak

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

Looking ahead to July
  • First harvests: snapdragon

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Snapdragons (Antirrhinum majus) are classic cool-season annuals whose upright spikes of dragon-lipped flowers are among spring's most dramatic displays. Tolerating light frosts, they bloom from early spring until summer heat shuts them down — then often revive in fall. In zones 9-11 they are grown as fall-planted winter annuals and may re-seed to naturalize.

Floyd County, Indiana is in USDA Zone 6b. The average last spring frost is April 6 and the first fall frost is October 28, giving you a growing season of approximately 205 days.

At an elevation of 1,112 feet, Floyd County receives approximately 35.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Snapdragon during the growing season.

Annual Blooms in Spring Pollinator-friendly Deer-resistant Good for cutting Fragrant
Floyd County, IN (Zone 6b) Long season
205 days
Last Spring Frost April 6
205 growing days
First Fall Frost October 28

Floyd County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-7.1

Drainage

Well Drained

Snapdragon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (58 days to spare)
Start indoors: Jan 18 Transplant: Mar 29 🌸 Bloom: Jun 7 – Aug 23
Recommended (50%) ✓ Fits season (58 days to spare)
Start indoors: Jan 26 Transplant: Apr 6 🌸 Bloom: Jun 15 – Aug 31
Safe Start (90%) ✓ Fits season (61 days to spare)
Start indoors: Feb 7 Transplant: Apr 18 🌸 Bloom: Jun 27 – Sep 12

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 Floyd County

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

Soil pH

Your soil pH (5.8–7.1) overlaps with Snapdragon's range (6.2–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Snapdragon.

Organic Matter

Organic matter is excellent (4.7%) — Snapdragon will thrive.

How to Plant Snapdragon

9"
Between Plants
12"
Between Rows

Succession Planting Snapdragon

3
successive plantings in your 205-day season

Sow every 8 weeks. Last sowing by Jul 20 to harvest before frost.

Snapdragon Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,037 gal / 100 sq ft

Monthly Watering Guide for Snapdragon

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

Month Snapdragon Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 2.5" 0" ❄️ Dormant
Apr 4.3" 3.3" 1" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 3.8" 0.5" 💧 Light watering
Aug 4.3" 3.4" 0.9" 💧 Light watering
Sep 4.3" 3.2" 1.1" 💧 Light watering
Oct 4.3" 3.3" 1" 💧 Light watering
Nov 2.6" 0" ❄️ Dormant
Dec 2.3" 0" ❄️ Dormant

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

Snapdragon 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.

Snapdragon needs ~1,232 GDD — county provides 2,972 GDD Excellent fit

Snapdragon Planting Timeline — Floyd County, IN

Snapdragon Planting Calendar

Activity When Date Range
Start Indoors January 26 Jan 26 – Feb 9
Transplant Outdoors April 6 Apr 6 – Apr 20
Direct Sow March 16 Mar 16 – Apr 6
Bloom June 15 Jun 15 – Aug 31

· 9" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6.2–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

205 days in Floyd County

Growing Tips for Snapdragon in Floyd County

Direct sow Snapdragon outdoors after April 06 in Floyd County when soil has warmed and frost danger has passed.

General growing tips

Start indoors 10-12 weeks before last frost; seeds need light to germinate — press into moist medium and do not cover. Transplant after hardening off, even if light frosts remain. Pinch seedlings once to encourage branching. Deadhead to prolong blooming. In zones 8-11, sow in fall for a winter-to-spring show. Tall varieties (24-36") make excellent cut flowers.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Snapdragon in Floyd County, IN?

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

What planting zone is Floyd County, IN?

Floyd County, Indiana is in USDA Hardiness Zone 6b. The average last spring frost is April 6 and first fall frost is October 28.

When should I plant Snapdragon in Floyd County, ?

In Floyd County, , plant Snapdragon after the last frost (around April 6) and before the first frost (around October 28). Best results when soil holds above 50°F.

What growing zone is Floyd County, for Snapdragon?

Floyd County sits in USDA Zone 6b. Snapdragon grows reliably in zones 2a through 11b, so it's a good fit here.

Can Snapdragon grow in Floyd County's climate?

Yes — Snapdragon grows well in Floyd County's temperate climate. Floyd County averages a 205-day frost-free season, with last frost around April 6 and first frost around October 28.

🌱

Your Floyd County Garden Planner — Free

A 22-page printable planner built for Floyd 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 Floyd County, IN. 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.