When to plant Salsify in Knox County, ME
Spring Salsify in Knox County goes in April 18–May 9, once nighttime temps stop dipping near freezing. A second sowing from August 3 to August 17 extends the harvest into fall.
When to Plant Salsify in Knox County, ME
Salsify is a root vegetable with a subtle oyster-like flavor, earning it the nickname "oyster plant." It produces long, slender, cream-colored roots.
Knox County, Maine is in USDA Zone 6a. The average last spring frost is May 2 and the first fall frost is October 12, giving you a growing season of approximately 163 days.
At an elevation of 408 feet, Knox County receives approximately 41.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Salsify to ensure they mature before fall.
Knox County Soil Profile
Soil Type
Silt Loam
Soil pH
5.1-6.7
Drainage
Well Drained
Monthly Watering Guide for Salsify
Salsify needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Salsify Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.1" | 0" | ❄️ Dormant |
| Feb | — | 3.1" | 0" | ❄️ Dormant |
| Mar | — | 3.1" | 0" | ❄️ Dormant |
| Apr | — | 3.8" | 0" | ❄️ Dormant |
| May | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Jun | 4.3" | 4" | 0.3" | 💧 Light watering |
| Jul | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Aug | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Sep | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Oct | 4.3" | 3" | 1.3" | 💧 Light watering |
| Nov | — | 2.9" | 0" | ❄️ Dormant |
| Dec | — | 3.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Oct in Knox County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Salsify Planting Timeline — Knox County, ME
Salsify Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | April 18 | Apr 18 – May 9 |
| Harvest | August 1 | Aug 1 – Sep 12 |
| Fall Sowing | August 3 | Aug 3 – Aug 17 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Direct Sow |
| May | Direct Sow |
| June | — |
| July | — |
| August | Fall Sowing Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
100–130 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6a
📆 Growing Season
163 days in Knox County
Growing Tips for Knox County
Direct sow in spring in deeply worked, stone-free soil. Use fresh seed only as viability drops quickly. Harvest in late fall after frost for best flavor.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Salsify in Other Locations
Frequently Asked Questions
When should I plant Salsify in Knox County, ME?
Knox County is in Zone 6a with an average last frost of May 2. Plan your Salsify planting based on this frost date — see the calendar above for exact timing.
What planting zone is Knox County, ME?
Knox County, Maine is in USDA Hardiness Zone 6a. The average last spring frost is May 2 and first fall frost is October 12.
When should I plant Salsify in Knox County, ME?
In Knox County, ME, plant Salsify after the last frost (around May 2) and before the first frost (around October 12). Best results when soil holds above 50°F.
What growing zone is Knox County, ME for Salsify?
Knox County sits in USDA Zone 6a. Salsify grows reliably in zones 3a through 9b, so it's a good fit here.
Can Salsify grow in Knox County's climate?
Yes — Salsify grows well in Knox County's temperate climate. Knox County averages a 163-day frost-free season, with last frost around May 2 and first frost around October 12.
Your Knox County Garden Planner — Free
A 22-page printable planner built for Knox 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.