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When to plant Coreopsis in Blount County County,

Plant Coreopsis in Blount County County after March 31; the prime window is March 24–April 14.

When to Plant Coreopsis in Blount County, AL

Blount County, Alabama Zone 8a June

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Avg. last frost March 31
Avg. first frost October 31
Soil temp (4") 80°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
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Coreopsis (Tickseed) is a cheerful, long-blooming native perennial that produces a continuous flush of bright yellow, gold, or bi-colored daisy-like flowers from early summer well into fall. One of the most reliable cut-and-come-again bloomers in the perennial garden, it thrives in hot, dry, sunny conditions and poor soil where many competitors struggle. An invaluable nectar source for native bees and butterflies, and a butterfly host plant for several species.

Blount County, Alabama is in USDA Zone 8a. The average last spring frost is March 31 and the first fall frost is October 31, giving you a growing season of approximately 214 days.

At an elevation of 56 feet, Blount County receives approximately 54.8 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88°F, providing good warmth for Coreopsis during the growing season. Clay soil retains moisture well for Coreopsis, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Coreopsis root diseases.

Perennial Blooms in Summer Pollinator-friendly Deer-resistant Good for cutting
Blount County, AL (Zone 8a) Long season
214 days
Last Spring Frost March 31
214 growing days
First Fall Frost October 31

Blount County Soil Profile

Soil Type

Clay Loam

Soil pH

5.2-6.6

Drainage

Well Drained

Coreopsis Planting Risk Windows

Early Start (70% safe) ✓ Fits season (3 days to spare)
Start indoors: Jan 29 Transplant: Mar 26 🌸 Bloom: May 28 – Oct 22
Recommended (50%) ✓ Fits season (4 days to spare)
Start indoors: Feb 3 Transplant: Mar 31 🌸 Bloom: Jun 2 – Oct 27
Safe Start (90%) ✓ Fits season (3 days to spare)
Start indoors: Feb 22 Transplant: Apr 19 🌸 Bloom: Jun 21 – Nov 15

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 Blount County

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

Soil pH

Your soil pH (5.2–6.6) overlaps with Coreopsis's range (5.5–7.5), though not a perfect match.

Soil Texture

The clay loam soil in Blount County is excellent for Coreopsis — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Coreopsis.

How to Plant Coreopsis

0.1"
Planting Depth
18"
Between Plants
24"
Between Rows

Succession Planting Coreopsis

4
successive plantings in your 214-day season

Sow every 6.9 weeks. Last sowing by Aug 12 to harvest before frost.

Coreopsis Water Budget

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

Monthly Watering Guide for Coreopsis

Coreopsis 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 Coreopsis Needs Rainfall You Supplement Action
Jan 3.9" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 2.2" 5.2" 0" ✅ Rainfall sufficient
Apr 2.2" 3.6" 0" ✅ Rainfall sufficient
May 2.2" 4.8" 0" ✅ Rainfall sufficient
Jun 2.2" 5.4" 0" ✅ Rainfall sufficient
Jul 2.2" 5.5" 0" ✅ Rainfall sufficient
Aug 2.2" 5.8" 0" ✅ Rainfall sufficient
Sep 2.2" 4" 0" ✅ Rainfall sufficient
Oct 2.2" 3.7" 0" ✅ Rainfall sufficient
Nov 4.5" 0" ❄️ Dormant
Dec 4.7" 0" ❄️ Dormant

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

Coreopsis 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.

Coreopsis needs ~1,120 GDD — county provides 3,424 GDD Excellent fit

Coreopsis Planting Timeline — Blount County, AL

Coreopsis Planting Calendar

Activity When Date Range
Start Indoors February 3 Feb 3 – Feb 17
Transplant Outdoors March 31 Mar 31 – Apr 14
Direct Sow March 24 Mar 24 – Apr 14
Bloom June 2 Jun 2 – Oct 27

Plant 0.1" deep · 18" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May
June Bloom
July Bloom
August Bloom
September Bloom
October Bloom
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 5.5–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

214 days in Blount County

Growing Tips for Coreopsis in Blount County

Direct sow Coreopsis outdoors after March 31 in Blount County when soil has warmed and frost danger has passed.

With Blount County's clay soil (26% clay), work in 3-4 inches of compost before planting Coreopsis. Avoid tilling when soil is wet to prevent compaction.

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

General growing tips

Start seeds indoors 8–10 weeks before last frost or direct sow after last frost. Seeds germinate easily without stratification. Thrives in poor to average, well-drained soil — rich soil promotes foliage over flowers. Drought tolerant once established; overwatering is the most common mistake. Deadhead spent blooms to maintain continuous flowering through the season. Shear plants by one-third in midsummer for a fresh flush of late-season blooms. Year 2+ plants bloom most heavily. Divide every 2–3 years in early spring to rejuvenate crowded clumps.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Coreopsis in Blount County, AL?

Blount County is in Zone 8a with an average last frost of March 31. Plan your Coreopsis planting based on this frost date — see the calendar above for exact timing.

What planting zone is Blount County, AL?

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

When should I plant Coreopsis in Blount County County, ?

In Blount County County, , plant Coreopsis after the last frost (around March 31) and before the first frost (around October 31). Best results when soil holds above 50°F.

What growing zone is Blount County County, for Coreopsis?

Blount County County sits in USDA Zone 8a. Coreopsis grows reliably in zones 3a through 9b, so it's a good fit here.

Can Coreopsis grow in Blount County County's climate?

Yes — Coreopsis grows well in Blount County County's temperate climate. Blount County County averages a 214-day frost-free season, with last frost around March 31 and first frost around October 31.

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Your Blount County Garden Planner — Free

A 22-page printable planner built for Blount 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 Blount 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.