When to Plant Cardoon in Glynn County, GA
Top priorities for Glynn County, Georgia gardeners in May
May is a pivotal month for Glynn County, Georgia gardens. Focus on these tasks first and you'll set up the rest of the season for success.
June prep starts now
- First harvests: cardoon
Cardoon is a large thistle relative of the artichoke, grown for its edible leaf stalks. It has dramatic silvery foliage and makes a striking ornamental as well.
Glynn County, Georgia is in USDA Zone 9a. The average last spring frost is February 9 and the first fall frost is December 13, giving you a growing season of approximately 307 days.
At an elevation of 135 feet, Glynn County receives approximately 55.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Cardoon may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Cardoon will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cardoon root diseases.
Glynn County Soil Profile
Soil Type
Sandy Loam
Soil pH
4.9-6.2
Drainage
Well Drained
Plant 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 Glynn County
How your county's soil matches Cardoon's growing requirements.
Soil pH
Your soil pH (4.9–6.2) is more acidic than Cardoon prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Glynn County warms quickly in spring but drains fast. Cardoon will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Cardoon.
Organic Matter
Organic matter is low (1.8%). Add 2-3 inches of compost before planting Cardoon.
How to Plant Cardoon
Plant Water Budget
Monthly Watering Guide for Cardoon
Cardoon needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Cardoon Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.4" | 0" | ❄️ Dormant |
| Feb | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Mar | 4.3" | 4.6" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Jun | 4.3" | 5.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 5.8" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| Nov | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| Dec | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Glynn County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Cardoon 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.
Cardoon Planting Timeline — Glynn County, GA
Cardoon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 23 | Feb 23 – Mar 9 |
| Harvest | June 29 | Jun 29 – Aug 10 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Transplant Outdoors |
| March | Transplant Outdoors |
| April | — |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Natural rainfall sufficient
📅 Days to Maturity
120–150 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
307 days in Glynn County
Growing Tips for Cardoon in Glynn County
Direct sow Cardoon outdoors after February 09 in Glynn County when soil has warmed and frost danger has passed.
Sandy soil in Glynn County dries quickly — mulch Cardoon with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
With summer highs reaching 97°F in Glynn County, provide afternoon shade for Cardoon and water deeply in the morning.
Common pests for Cardoon in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Blanch stalks by wrapping with cardboard or tying leaves together 3-4 weeks before harvest. Provide deep, rich soil and consistent moisture. Protect from hard frost.
Companion Planting
Good Companions
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Cardoon in Other Locations
Frequently Asked Questions
When should I plant Cardoon in Glynn County, GA?
Glynn County is in Zone 9a with an average last frost of February 9. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Glynn County, GA?
Glynn County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is February 9 and first fall frost is December 13.
Your Glynn County Garden Planner — Free
A 24-page printable planner built for Glynn County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.