When to plant Sunflower in Fulton County, KY
For Sunflower in Fulton County, the safe spring window opens around March 30 and closes around April 20. Last expected frost is March 30, first fall frost October 31, giving a 215-day growing season.
When to Plant Sunflower in Fulton County, KY
What to do in July
July is a pivotal month for Fulton County, Kentucky gardens. Focus on these tasks first and you'll set up the rest of the season for success.
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Bring in the sunflower
Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.
Coming up in August — start thinking about
- First harvests: sunflower
Sunflower (Helianthus annuus) is a fast-growing North American native annual famous for its towering stems and brilliant yellow heads. It thrives in full sun and heat, producing large, pollen-rich blooms that attract bees, butterflies, and seed-eating birds. Varieties range from 18-inch dwarfs to 12-foot giants and nearly every color except blue.
Fulton County, Kentucky is in USDA Zone 7b. The average last spring frost is March 30 and the first fall frost is October 31, giving you a growing season of approximately 215 days.
At an elevation of 3,261 feet, Fulton County receives approximately 42.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 92°F, providing good warmth for Sunflower during the growing season.
Fulton County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-6.8
Drainage
Well Drained
Sunflower Planting Risk Windows
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 Fulton County
How your county's soil matches Sunflower's growing requirements.
Soil pH
Your soil pH (5.7–6.8) overlaps with Sunflower's range (6.0–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Fulton County is excellent for Sunflower — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Sunflower.
How to Plant Sunflower
Succession Planting Sunflower
Sow every 8 weeks. Last sowing by Jul 23 to harvest before frost.
Sunflower Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Sunflower
Sunflower 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 | Sunflower Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.8" | 0" | ❄️ Dormant |
| Feb | — | 2.9" | 0" | ❄️ Dormant |
| Mar | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 3.4" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 3.6" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 3.8" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 4.3" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 3.2" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 2.4" | 0" | ✅ Rainfall sufficient |
| Nov | — | 3.3" | 0" | ❄️ Dormant |
| Dec | — | 2.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Oct in Fulton County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Sunflower 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.
Sunflower Planting Timeline — Fulton County, KY
Sunflower Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 9 | Mar 9 – Mar 23 |
| Transplant Outdoors | March 30 | Mar 30 – Apr 13 |
| Direct Sow | March 30 | Mar 30 – Apr 20 |
| Bloom | June 22 | Jun 22 – Oct 12 |
Plant 1" deep · 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors 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
70–100 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 7b
📆 Growing Season
215 days in Fulton County
Growing Tips for Sunflower in Fulton County
Direct sow Sunflower outdoors after March 30 in Fulton County when soil has warmed and frost danger has passed.
Common pests for Sunflower in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct-sow 1 inch deep after last frost; germination takes 7-14 days at 65-75°F soil. Sunflowers dislike root disturbance so direct sowing is strongly preferred over transplanting. Plant in succession every 2 weeks for extended bloom. Stake tall varieties. Avoid overwatering — they tolerate drought once established. Birds will self-deadhead seed heads; leave them up through fall for wildlife.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Sunflower in Other Locations
Frequently Asked Questions
When should I plant Sunflower in Fulton County, KY?
Fulton County is in Zone 7b with an average last frost of March 30. Plan your Sunflower planting based on this frost date — see the calendar above for exact timing.
What planting zone is Fulton County, KY?
Fulton County, Kentucky is in USDA Hardiness Zone 7b. The average last spring frost is March 30 and first fall frost is October 31.
When should I plant Sunflower in Fulton County, KY?
In Fulton County, KY, plant Sunflower after the last frost (around March 30) and before the first frost (around October 31). Best results when soil holds above 50°F.
What growing zone is Fulton County, KY for Sunflower?
Fulton County sits in USDA Zone 7b. Sunflower grows reliably in zones 2a through 11b, so it's a good fit here.
Can Sunflower grow in Fulton County's climate?
Yes — Sunflower grows well in Fulton County's temperate climate. Fulton County averages a 215-day frost-free season, with last frost around March 30 and first frost around October 31.
Your Fulton County Garden Planner — Free
A 22-page printable planner built for Fulton County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.