Blog

When to Plant Salsify in Rogers County, OK

Rogers County, Oklahoma Zone 7a May

This month in Rogers County, Oklahoma

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Rogers County, Oklahoma.

Avg. last frost April 7
Avg. first frost October 26
Soil temp (4") 66°F
Watering Low
Pest pressure Moderate
Daylight 13.9 hrs

Instant PDF download. No spam, unsubscribe any time.

Salsify is a root vegetable with a subtle oyster-like flavor, earning it the nickname "oyster plant." It produces long, slender, cream-colored roots.

Rogers County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 7 and the first fall frost is October 26, giving you a growing season of approximately 202 days.

At an elevation of 505 feet, Rogers County receives approximately 30.8 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Salsify during the growing season.

Rogers County, OK (Zone 7a) Long season
202 days
Last Spring Frost April 7
202 growing days
First Fall Frost October 26
Share this guide:

Rogers County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (53 days to spare)
Transplant: Apr 2 🍅 Harvest: Jul 16 – Aug 27
Recommended (50%) ✓ Fits season (55 days to spare)
Transplant: Apr 7 🍅 Harvest: Jul 21 – Sep 1
Safe Start (90%) ✓ Fits season (55 days to spare)
Transplant: Apr 24 🍅 Harvest: Aug 7 – Sep 18

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 Rogers County

How your county's soil matches Salsify's growing requirements.

Soil pH

Your soil pH (6.4–7.8) overlaps with Salsify's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Rogers County is excellent for Salsify — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Salsify.

Organic Matter

Organic matter is excellent (4.1%) — Salsify will thrive.

How to Plant Salsify

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,186 gal / 100 sq ft

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 0.8" 0" ❄️ Dormant
Feb 1.1" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 4.3" 3" 1.3" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 5.1" 0" ✅ Rainfall sufficient
Jul 4.3" 3.9" 0.4" 💧 Light watering
Aug 4.3" 4.2" 0.1" 💧 Light watering
Sep 4.3" 2.8" 1.5" 💧 Light watering
Oct 4.3" 2.1" 2.2" 🚿 Regular watering
Nov 1.2" 0" ❄️ Dormant
Dec 0.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Rogers 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 needs ~2,185 GDD — county provides 3,838 GDD Excellent fit

Salsify Planting Timeline — Rogers County, OK

Salsify Planting Calendar

Activity When Date Range
Direct Sow March 24 Mar 24 – Apr 14
Harvest July 7 Jul 7 – Aug 18
Fall Sowing August 17 Aug 17 – Aug 31

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow
May
June
July Harvest
August Fall Sowing Harvest
September
October
November
December
Share this guide:

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 7a

📆 Growing Season

202 days in Rogers County

Growing Tips for Salsify in Rogers County

Direct sow Salsify outdoors after April 07 in Rogers County when soil has warmed and frost danger has passed.

Common pests for Salsify in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

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 →

Frequently Asked Questions

When should I plant Salsify in Rogers County, OK?

Rogers County is in Zone 7a with an average last frost of April 7. Plan your Salsify planting based on this frost date — see the calendar above for exact timing.

What planting zone is Rogers County, OK?

Rogers County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 7 and first fall frost is October 26.

🌱

Your Rogers County Garden Planner — Free

A 24-page printable planner built for Rogers County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Rogers County, OK. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.