When to Plant Fennel in Rush County, KS
Your May planting checklist for Rush County, Kansas
We've pulled the most time-sensitive tasks for Rush County, Kansas this May and put them front and centre. Tackle them in order.
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Time to transplant fennel
Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.
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Plant fennel from seed, right in the garden
Mark the row. Birds and stray feet both have opinions about unmarked beds.
June will be here before you know it — start on
- Starting indoors: fennel
Florence fennel is grown for its swollen bulb-like stem base, which has a mild anise flavor. It is crisp raw in salads and sweet when roasted or braised.
Rush County, Kansas is in USDA Zone 6b. The average last spring frost is April 24 and the first fall frost is October 15, giving you a growing season of approximately 174 days.
At an elevation of 759 feet, Rush County receives approximately 21.7 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Fennel during the growing season.
Rush County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.3
Drainage
Well Drained
Plant 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 Rush County
How your county's soil matches Fennel's growing requirements.
Soil pH
Your soil pH (6.4–7.3) overlaps with Fennel's range (5.5–7.0), though not a perfect match.
Soil Texture
The loam soil in Rush County is excellent for Fennel — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.4%). Annual compost additions will help Fennel.
How to Plant Fennel
Succession Planting Fennel
Sow every 6.9 weeks. Last sowing by Jul 17 to harvest before frost.
Plant Water Budget
Water stress score is 10/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Fennel
Fennel needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.
| Month | Fennel Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 0.5" | 0" | ❄️ Dormant |
| Feb | — | 0.8" | 0" | ❄️ Dormant |
| Mar | — | 1.3" | 0" | ❄️ Dormant |
| Apr | 2.6" | 2.1" | 0.5" | 💧 Light watering |
| May | 2.6" | 3.4" | 0" | ✅ Rainfall sufficient |
| Jun | 2.6" | 3.4" | 0" | ✅ Rainfall sufficient |
| Jul | 2.6" | 2.9" | 0" | ✅ Rainfall sufficient |
| Aug | 2.6" | 2.6" | 0" | ✅ Rainfall sufficient |
| Sep | 2.6" | 2.1" | 0.5" | 💧 Light watering |
| Oct | 2.6" | 1.5" | 1.1" | 💧 Light watering |
| Nov | — | 0.7" | 0" | ❄️ Dormant |
| Dec | — | 0.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Rush County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Fennel 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.
Fennel Planting Timeline — Rush County, KS
Fennel Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 27 | Feb 27 – Mar 13 |
| Transplant Outdoors | May 8 | May 8 – May 22 |
| Direct Sow | May 1 | May 1 – May 22 |
| Harvest | July 10 | Jul 10 – Aug 21 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.6"/week · Only during dry spells
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 6b
📆 Growing Season
174 days in Rush County
Growing Tips for Fennel in Rush County
Direct sow Fennel outdoors after April 24 in Rush County when soil has warmed and frost danger has passed.
Common pests for Fennel in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in late summer for fall harvest to reduce bolting. Hill soil around bulbs as they enlarge. Harvest when bulbs are tennis-ball sized before they elongate.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Fennel in Other Locations
Frequently Asked Questions
When should I plant Fennel in Rush County, KS?
Rush County is in Zone 6b with an average last frost of April 24. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.
What planting zone is Rush County, KS?
Rush County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 24 and first fall frost is October 15.
Your Rush County Garden Planner — Free
A 24-page printable planner built for Rush County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.