When to plant Salvia in Mason County, IL
In Mason County, Salvia is a spring-only crop. Plant April 22–May 6 once soil hits 50°F.
When to Plant Salvia in Mason County, IL
This month in Mason County, Illinois
We've pulled the most time-sensitive tasks for Mason County, Illinois this July and put them front and centre. Tackle them in order.
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Pick salvia
Check every 1–2 days. Many of these get tough or go to seed if you wait too long.
August will be here before you know it — start on
- First harvests: salvia
Salvia splendens is a tender perennial from Brazil grown as a warm-season annual throughout the US. Its vivid, upright flower spikes in brilliant red, purple, and coral are irresistible to hummingbirds, bees, and butterflies. One of the longest-blooming annuals in the landscape — plants bloom from early summer until hard frost with minimal deadheading required.
Mason County, Illinois is in USDA Zone 6a. The average last spring frost is April 15 and the first fall frost is October 14, giving you a growing season of approximately 182 days.
At an elevation of 768 feet, Mason County receives approximately 30.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Salvia during the growing season.
Mason County Soil Profile
Soil Type
Silt Loam
Soil pH
6.1-6.9
Drainage
Well Drained
Salvia 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 Mason County
How your county's soil matches Salvia's growing requirements.
Soil pH
Your soil pH (6.1–6.9) is within Salvia's preferred range (5.5–7.0).
Soil Texture
The silt loam soil in Mason County is excellent for Salvia — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is excellent (4.8%) — Salvia will thrive.
How to Plant Salvia
Succession Planting Salvia
Sow every 8 weeks. Last sowing by Jul 16 to harvest before frost.
Salvia Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Salvia
Salvia needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Salvia Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.3" | 0" | ❄️ Dormant |
| Feb | — | 1.5" | 0" | ❄️ Dormant |
| Mar | — | 2" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3" | 1.3" | 💧 Light watering |
| May | 4.3" | 3.3" | 1" | 💧 Light watering |
| Jun | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Jul | 4.3" | 3.3" | 1" | 💧 Light watering |
| Aug | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Sep | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Oct | 4.3" | 2.2" | 2.1" | 💧 Light watering |
| Nov | — | 2" | 0" | ❄️ Dormant |
| Dec | — | 1.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Mason County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Salvia 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.
Salvia Planting Timeline — Mason County, IL
Salvia Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 11 | Feb 11 – Feb 25 |
| Transplant Outdoors | April 22 | Apr 22 – May 6 |
| Bloom | July 1 | Jul 1 – Oct 7 |
· 12" apart · Rows 18" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | — |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 1-2 times/week
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: ideal
🗺️ USDA Zone
Zone 6a
📆 Growing Season
182 days in Mason County
Growing Tips for Salvia in Mason County
Direct sow Salvia outdoors after April 15 in Mason County when soil has warmed and frost danger has passed.
General growing tips
Start indoors 8-10 weeks before last frost; seeds need 65-70°F soil and light to germinate (surface-sow, do not cover). Transplant after last frost when soil has warmed. Salvia is frost-sensitive — even a light frost kills plants. Pinch spent spikes to encourage continued bloom. Tolerates heat and humidity well once established. In zones 9b-11b can be grown as a short-lived perennial.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Salvia in Other Locations
Frequently Asked Questions
When should I plant Salvia in Mason County, IL?
Mason County is in Zone 6a with an average last frost of April 15. Plan your Salvia planting based on this frost date — see the calendar above for exact timing.
What planting zone is Mason County, IL?
Mason County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 15 and first fall frost is October 14.
When should I plant Salvia in Mason County, IL?
In Mason County, IL, plant Salvia after the last frost (around April 15) and before the first frost (around October 14). Best results when soil holds above 50°F.
What growing zone is Mason County, IL for Salvia?
Mason County sits in USDA Zone 6a. Salvia grows reliably in zones 2a through 11b, so it's a good fit here.
Can Salvia grow in Mason County's climate?
Yes — Salvia grows well in Mason County's temperate climate. Mason County averages a 182-day frost-free season, with last frost around April 15 and first frost around October 14.
Your Mason County Garden Planner — Free
A 22-page printable planner built for Mason County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.