When to Plant Cardoon in Botetourt County, VA
August in the garden — Botetourt County, Virginia
Your garden in Botetourt County, Virginia is working on a schedule, even when you're not. Here's where you should be this August.
To set up a strong September, finish these tasks
- 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.
Botetourt County, Virginia is in USDA Zone 7b. The average last spring frost is April 23 and the first fall frost is October 22, giving you a growing season of approximately 182 days.
At an elevation of 897 feet, Botetourt County receives approximately 40.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Cardoon during the growing season.
Botetourt County Soil Profile
Soil Type
Silt Loam
Soil pH
5.7-6.9
Drainage
Well Drained
Cardoon 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 Botetourt County
How your county's soil matches Cardoon's growing requirements.
Soil pH
Your soil pH (5.7–6.9) overlaps with Cardoon's range (6.0–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Botetourt County is excellent for Cardoon — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Cardoon.
Organic Matter
Organic matter is moderate (3.0%). Annual compost additions will help Cardoon.
How to Plant Cardoon
Cardoon 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 | — | 3.6" | 0" | ❄️ Dormant |
| Feb | — | 2.9" | 0" | ❄️ Dormant |
| Mar | — | 4" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3.3" | 1" | 💧 Light watering |
| May | 4.3" | 3" | 1.3" | 💧 Light watering |
| Jun | 4.3" | 3.7" | 0.6" | 💧 Light watering |
| Jul | 4.3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Sep | 4.3" | 3.3" | 1" | 💧 Light watering |
| Oct | 4.3" | 2.3" | 2" | 💧 Light watering |
| Nov | — | 2.7" | 0" | ❄️ Dormant |
| Dec | — | 2.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Botetourt 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 — Botetourt County, VA
Cardoon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 7 | May 7 – May 21 |
| Harvest | September 10 | Sep 10 – Oct 22 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | — |
| August | — |
| September | Harvest |
| October | Harvest |
| 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: acceptable
🗺️ USDA Zone
Zone 7b
📆 Growing Season
182 days in Botetourt County
Growing Tips for Cardoon in Botetourt County
Direct sow Cardoon outdoors after April 23 in Botetourt County when soil has warmed and frost danger has passed.
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
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Cardoon in Other Locations
Frequently Asked Questions
When should I plant Cardoon in Botetourt County, VA?
Botetourt County is in Zone 7b with an average last frost of April 23. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Botetourt County, VA?
Botetourt County, Virginia is in USDA Hardiness Zone 7b. The average last spring frost is April 23 and first fall frost is October 22.
Your Botetourt County Garden Planner — Free
A 22-page printable planner built for Botetourt 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.