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When to plant Bachelor's Button in Marshall County County,

Plant Bachelor's Button in Marshall County County, when soil hits 50°F — usually February 22. Continue planting through March 15 for the spring crop. A second sowing from September 5 to September 19 extends the harvest into fall.

When to Plant Bachelor's Button in Marshall County, AL

Marshall County, Alabama Zone 8a June

June in Marshall County, Alabama — your action list

Here's what deserves your attention in Marshall County, Alabama this month. Everything below is tailored to Zone 8a and timed around your local frost dates.

Avg. last frost April 5
Avg. first frost October 31
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
  1. It's harvest week for bachelor's button

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

July will be here before you know it — start on
  • First harvests: bachelor's button

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Bachelor's Button (Centaurea cyanus), also called cornflower, is a carefree cool-season annual best known for its vivid cobalt-blue flowers — one of the truest blues in the annual garden. It tolerates light frosts, self-seeds prolifically, and thrives in poor to average soils. A traditional cut flower and pollinator magnet, it has been cultivated in gardens for centuries.

Marshall County, Alabama is in USDA Zone 8a. The average last spring frost is April 5 and the first fall frost is October 31, giving you a growing season of approximately 209 days.

At an elevation of 159 feet, Marshall County receives approximately 60.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89°F, providing good warmth for Bachelor's Button during the growing season. Clay soil retains moisture well for Bachelor's Button, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Bachelor's Button root diseases.

Annual Blooms in Spring Pollinator-friendly Deer-resistant Good for cutting
Marshall County, AL (Zone 8a) Long season
209 days
Last Spring Frost April 5
209 growing days
First Fall Frost October 31
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Marshall County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Bachelor's Button Planting Risk Windows

Early Start (70% safe) ✓ Fits season (56 days to spare)
Transplant: Mar 13 🌸 Bloom: May 15 – Aug 28
Recommended (50%) ✓ Fits season (55 days to spare)
Transplant: Mar 22 🌸 Bloom: May 24 – Sep 6
Safe Start (90%) ✓ Fits season (55 days to spare)
Transplant: Apr 4 🌸 Bloom: Jun 6 – Sep 19

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 Marshall County

How your county's soil matches Bachelor's Button's growing requirements.

Soil pH

Your soil pH (5.5–6.6) overlaps with Bachelor's Button's range (6.0–7.5), though not a perfect match.

Soil Texture

The clay loam soil in Marshall County is excellent for Bachelor's Button — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Bachelor's Button.

How to Plant Bachelor's Button

0.3"
Planting Depth
12"
Between Plants
12"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Bachelor's Button

4
successive plantings in your 209-day season

Sow every 6.9 weeks. Last sowing by Aug 02 to harvest before frost.

For a dedicated fall crop, sow by Sep 05.

Bachelor's Button Water Budget

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

Monthly Watering Guide for Bachelor's Button

Bachelor's Button 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 Bachelor's Button Needs Rainfall You Supplement Action
Jan 5" 0" ❄️ Dormant
Feb 5.3" 0" ❄️ Dormant
Mar 5.4" 0" ❄️ Dormant
Apr 2.2" 4.7" 0" ✅ Rainfall sufficient
May 2.2" 4.8" 0" ✅ Rainfall sufficient
Jun 2.2" 5" 0" ✅ Rainfall sufficient
Jul 2.2" 6.7" 0" ✅ Rainfall sufficient
Aug 2.2" 5.4" 0" ✅ Rainfall sufficient
Sep 2.2" 4.2" 0" ✅ Rainfall sufficient
Oct 2.2" 4.2" 0" ✅ Rainfall sufficient
Nov 5.1" 0" ❄️ Dormant
Dec 4.4" 0" ❄️ Dormant

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

Bachelor's Button 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.

Bachelor's Button needs ~1,256 GDD — county provides 3,500 GDD Excellent fit

Bachelor's Button Planting Timeline — Marshall County, AL

Bachelor's Button Planting Calendar

Activity When Date Range
Transplant Outdoors March 22 Mar 22 – Apr 5
Direct Sow February 22 Feb 22 – Mar 15
Bloom May 24 May 24 – Sep 6
Fall Sowing September 5 Sep 5 – Sep 19

Plant 0.3" deep · 12" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February Direct Sow
March Transplant Outdoors Direct Sow
April Transplant Outdoors
May Bloom
June Bloom
July Bloom
August Bloom
September Fall Sowing Bloom
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

209 days in Marshall County

Growing Tips for Bachelor's Button in Marshall County

Direct sow Bachelor's Button outdoors after April 05 in Marshall County when soil has warmed and frost danger has passed.

With Marshall County's clay soil (34% clay), work in 3-4 inches of compost before planting Bachelor's Button. Avoid tilling when soil is wet to prevent compaction.

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

General growing tips

Direct-sow in early spring as soon as soil can be worked; seeds need a brief cold period for best germination (refrigerate for a few days before planting if spring arrives quickly). In zones 6+, fall-sow for the earliest spring bloom. Thin to 12 inches; do not over-fertilize — too much nitrogen produces foliage at the expense of flowers. Deadhead to prolong blooming or allow self-seeding for a naturalized colony.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Bachelor's Button in Marshall County, AL?

Marshall County is in Zone 8a with an average last frost of April 5. Plan your Bachelor's Button planting based on this frost date — see the calendar above for exact timing.

What planting zone is Marshall County, AL?

Marshall County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is April 5 and first fall frost is October 31.

When should I plant Bachelor's Button in Marshall County County, ?

In Marshall County County, , plant Bachelor's Button after the last frost (around April 5) and before the first frost (around October 31). Best results when soil holds above 50°F.

What growing zone is Marshall County County, for Bachelor's Button?

Marshall County County sits in USDA Zone 8a. Bachelor's Button grows reliably in zones 2a through 11b, so it's a good fit here.

Can Bachelor's Button grow in Marshall County County's climate?

Yes — Bachelor's Button grows well in Marshall County County's temperate climate. Marshall County County averages a 209-day frost-free season, with last frost around April 5 and first frost around October 31.

🌱

Your Marshall County Garden Planner — Free

A 22-page printable planner built for Marshall County (Zone 8a). 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 Marshall County, AL. 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.