When to Plant Horseradish in Hill County, TX
May to-do list for Hill County, Texas
Your Hill County, Texas garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.
Horseradish is a vigorous perennial grown for its pungent, spicy roots used as a condiment. Once established, it can be difficult to eradicate, so choose its location carefully.
Hill County, Texas is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 19, giving you a growing season of approximately 252 days.
At an elevation of 2,597 feet, Hill County receives approximately 54.7 inches of rainfall annually with predominantly clay soil. Summer highs average 93°F, providing good warmth for Horseradish during the growing season. Clay soil retains moisture well for Horseradish, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Horseradish root diseases.
Hill County Soil Profile
Soil Type
Clay
Soil pH
7.3-7.7
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 Hill County
How your county's soil matches Horseradish's growing requirements.
Soil pH
Your soil pH (7.3–7.7) overlaps with Horseradish's range (6.0–7.5), though not a perfect match.
Soil Texture
Your clay soil in Hill County is workable for Horseradish. Add compost annually to improve structure.
Organic Matter
Organic matter is moderate (2.9%). Annual compost additions will help Horseradish.
How to Plant Horseradish
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Horseradish
Horseradish needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Horseradish Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | — | 1.5" | 0" | ❄️ Dormant |
| Mar | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| Apr | 4.3" | 5.9" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 6.7" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 9.7" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 7" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Nov | 4.3" | 2" | 2.3" | 🚿 Regular watering |
| Dec | — | 1.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Hill County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Horseradish 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.
Horseradish Planting Timeline — Hill County, TX
Horseradish Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | March 26 | Mar 26 – Apr 9 |
| Harvest | July 30 | Jul 30 – Oct 8 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Transplant Outdoors |
| April | Transplant Outdoors |
| May | — |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
120–180 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
252 days in Hill County
Growing Tips for Horseradish in Hill County
Direct sow Horseradish outdoors after March 12 in Hill County when soil has warmed and frost danger has passed.
With Hill County's clay soil (36% clay), work in 3-4 inches of compost before planting Horseradish. Avoid tilling when soil is wet to prevent compaction.
Common pests for Horseradish in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Plant root cuttings at a 45-degree angle in early spring. Harvest roots in late fall for strongest flavor. Contain the plant with barriers or grow in large containers.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Horseradish in Other Locations
Frequently Asked Questions
When should I plant Horseradish in Hill County, TX?
Hill County is in Zone 8b with an average last frost of March 12. Plan your Horseradish planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hill County, TX?
Hill County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 19.
Your Hill County Garden Planner — Free
A 24-page printable planner built for Hill County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.