When to Plant Rue in Tulare County, CA
Tulare County, California gardeners: here's your May plan
May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Tulare County, California.
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Bring in the rue
If you can't use it all right away, check the food-preservation section of your planner.
Coming up in June — start thinking about
- First harvests: rue
Rue is a bitter, aromatic perennial herb with bluish-green foliage used historically in medicine and as a pest deterrent. Handle with care as its sap can cause skin irritation.
Tulare County, California is in USDA Zone 9b. The average last spring frost is February 17 and the first fall frost is December 3, giving you a growing season of approximately 289 days.
At an elevation of 5,836 feet, Tulare County receives approximately 18.4 inches of rainfall annually with predominantly loam soil. Summer highs average 95°F, so Rue may need afternoon shade and extra watering during peak heat. With low rainfall, drip irrigation is essential for growing Rue successfully. Mulch heavily to conserve soil moisture.
Tulare County Soil Profile
Soil Type
Loam
Soil pH
5.9-7.2
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 Tulare County
How your county's soil matches Rue's growing requirements.
Soil pH
Your soil pH (5.9–7.2) overlaps with Rue's range (6.0–7.5), though not a perfect match.
Soil Texture
The loam soil in Tulare County is excellent for Rue — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Rue.
How to Plant Rue
Succession Planting Rue
Sow every 8 weeks. Last sowing by Sep 04 to harvest before frost.
Plant Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Rue
Rue needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.
| Month | Rue Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.6" | 0" | ❄️ Dormant |
| Feb | 2.2" | 3.7" | 0" | ✅ Rainfall sufficient |
| Mar | 2.2" | 3" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 1.5" | 0.7" | 💧 Light watering |
| May | 2.2" | 0.5" | 1.7" | 🚿 Regular watering |
| Jun | 2.2" | 0.1" | 2.1" | 🚿 Regular watering |
| Jul | 2.2" | 0" | 2.2" | 🚿 Regular watering |
| Aug | 2.2" | 0" | 2.2" | 🚿 Regular watering |
| Sep | 2.2" | 0.2" | 2" | 🚿 Regular watering |
| Oct | 2.2" | 0.7" | 1.5" | 🚿 Regular watering |
| Nov | 2.2" | 1.7" | 0.5" | 💧 Light watering |
| Dec | 2.2" | 3.4" | 0" | ✅ Rainfall sufficient |
Water needs are for active growing months only (Feb–Dec in Tulare County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Rue 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.
Rue Planting Timeline — Tulare County, CA
Rue Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 24 | Feb 24 – Mar 10 |
| Harvest | May 5 | May 5 – Jul 7 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Transplant Outdoors |
| March | Transplant Outdoors |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.5"/week · Only during dry spells
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
289 days in Tulare County
Growing Tips for Rue in Tulare County
Direct sow Rue outdoors after February 17 in Tulare County when soil has warmed and frost danger has passed.
Tulare County receives only 18" of rain annually. Rue needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Start seeds indoors or direct sow. Plant in well-drained soil. Wear gloves when handling as sap can cause phytophotodermatitis. Prune in early spring.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Rue in Other Locations
Frequently Asked Questions
When should I plant Rue in Tulare County, CA?
Tulare County is in Zone 9b with an average last frost of February 17. Plan your Rue planting based on this frost date — see the calendar above for exact timing.
What planting zone is Tulare County, CA?
Tulare County, California is in USDA Hardiness Zone 9b. The average last spring frost is February 17 and first fall frost is December 3.
Your Tulare County Garden Planner — Free
A 24-page printable planner built for Tulare County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.