When to plant Salsify in Summit County, CO
Aim to plant Salsify in Summit County on or after June 2; the window stays open through June 23. Summit County's 80-day frost-free season gives you a tight window — choose short-season varieties. A second sowing from June 26 to July 10 extends the harvest into fall.
When to Plant Salsify in Summit County, CO
June in Summit County, Colorado — your action list
Here's what deserves your attention in Summit County, Colorado this month. Everything below is tailored to Zone 5a and timed around your local frost dates.
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Outdoor sowing time: salsify
These tolerate cool soil, so you're not gambling by sowing now.
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Kick off the fall garden with salsify
Fall crops get sweeter with a light frost. Don't be afraid of cool nights.
Salsify is a root vegetable with a subtle oyster-like flavor, earning it the nickname "oyster plant." It produces long, slender, cream-colored roots.
Summit County, Colorado is in USDA Zone 5a. The average last spring frost is June 16 and the first fall frost is September 4, giving you a growing season of approximately 80 days.
At an elevation of 7,005 feet, Summit County receives approximately 17.5 inches of rainfall annually with predominantly loam soil. Summer highs average 81°F, so choose short-season varieties of Salsify to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Salsify successfully. Mulch heavily to conserve soil moisture.
Summit County Soil Profile
Soil Type
Loam
Soil pH
6.8-8
Drainage
Well Drained
Salsify 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 Summit County
How your county's soil matches Salsify's growing requirements.
Soil pH
Your soil pH (6.8–8.0) overlaps with Salsify's range (6.0–7.5), though not a perfect match.
Soil Texture
The loam soil in Summit County is excellent for Salsify — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Salsify.
Organic Matter
Organic matter is moderate (2.1%). Annual compost additions will help Salsify.
How to Plant Salsify
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Salsify Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
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 | — | 1.4" | 0" | ❄️ Dormant |
| Feb | — | 1.1" | 0" | ❄️ Dormant |
| Mar | — | 1.6" | 0" | ❄️ Dormant |
| Apr | — | 1.7" | 0" | ❄️ Dormant |
| May | — | 1.8" | 0" | ❄️ Dormant |
| Jun | 4.3" | 1.3" | 3" | 🚿 Regular watering |
| Jul | 4.3" | 1.5" | 2.8" | 🚿 Regular watering |
| Aug | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Sep | 4.3" | 1.3" | 3" | 🚿 Regular watering |
| Oct | — | 1.6" | 0" | ❄️ Dormant |
| Nov | — | 1.2" | 0" | ❄️ Dormant |
| Dec | — | 1.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Jun–Sep in Summit County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Salsify 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.
Salsify Planting Timeline — Summit County, CO
Salsify Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | June 2 | Jun 2 – Jun 23 |
| Harvest | September 15 | Sep 15 – Oct 27 |
| Fall Sowing | June 26 | Jun 26 – Jul 10 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | Direct Sow Fall Sowing |
| July | Fall Sowing |
| August | — |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 1-2 times/week
📅 Days to Maturity
100–130 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 5a
📆 Growing Season
80 days in Summit County
Growing Tips for Salsify in Summit County
Direct sow Salsify outdoors after June 16 in Summit County when soil has warmed and frost danger has passed.
Your 80.0-day growing season in Summit County is tight for Salsify (100.0-130.0 days to maturity). Start indoors and choose early-maturing varieties.
Common pests for Salsify in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
Summit County receives only 18" of rain annually. Salsify needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
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 Summit County, CO?
Summit County is in Zone 5a with an average last frost of June 16. Plan your Salsify planting based on this frost date — see the calendar above for exact timing.
What planting zone is Summit County, CO?
Summit County, Colorado is in USDA Hardiness Zone 5a. The average last spring frost is June 16 and first fall frost is September 4.
When should I plant Salsify in Summit County, CO?
In Summit County, CO, plant Salsify after the last frost (around June 16) and before the first frost (around September 4). Best results when soil holds above 50°F.
What growing zone is Summit County, CO for Salsify?
Summit County sits in USDA Zone 5a. Salsify grows reliably in zones 3a through 9b, so it's a good fit here.
Can Salsify grow in Summit County's climate?
Yes — Salsify grows well in Summit County's temperate climate. Summit County averages a 80-day frost-free season, with last frost around June 16 and first frost around September 4.
Your Summit County Garden Planner — Free
A 22-page printable planner built for Summit County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.