When to Plant Chives in San Benito County, CA
San Benito County, California gardeners: here's your May plan
Your San Benito County, California garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.
-
Collect chives at their peak
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
Coming up in June — start thinking about
- First harvests: chives
Chives are a hardy perennial herb with a mild onion flavor and attractive purple pom-pom flowers. They are one of the easiest herbs to grow and maintain.
San Benito County, California is in USDA Zone 9b. The average last spring frost is February 21 and the first fall frost is November 29, giving you a growing season of approximately 281 days.
At an elevation of 149 feet, San Benito County receives approximately 13 inches of rainfall annually with predominantly loam soil. Summer highs average 94°F, providing good warmth for Chives during the growing season. With low rainfall, drip irrigation is essential for growing Chives successfully. Mulch heavily to conserve soil moisture.
San Benito County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.4
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 San Benito County
How your county's soil matches Chives's growing requirements.
Soil pH
Your soil pH (6.5–7.4) overlaps with Chives's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in San Benito County is excellent for Chives — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Chives.
How to Plant Chives
Succession Planting Chives
Sow every 6.9 weeks. Last sowing by Aug 31 to harvest before frost.
Plant Water Budget
Water stress score is 10/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Chives
Chives needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.
| Month | Chives Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.5" | 0" | ❄️ Dormant |
| Feb | 1.7" | 2.6" | 0" | ✅ Rainfall sufficient |
| Mar | 1.7" | 2.2" | 0" | ✅ Rainfall sufficient |
| Apr | 1.7" | 1.1" | 0.6" | 💧 Light watering |
| May | 1.7" | 0.3" | 1.4" | 🚿 Regular watering |
| Jun | 1.7" | 0.1" | 1.6" | 🚿 Regular watering |
| Jul | 1.7" | 0" | 1.7" | 🚿 Regular watering |
| Aug | 1.7" | 0" | 1.7" | 🚿 Regular watering |
| Sep | 1.7" | 0.1" | 1.6" | 🚿 Regular watering |
| Oct | 1.7" | 0.5" | 1.2" | 🚿 Regular watering |
| Nov | 1.7" | 1.3" | 0.4" | 💧 Light watering |
| Dec | — | 2.3" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Feb–Nov in San Benito County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Chives 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.
Chives Planting Timeline — San Benito County, CA
Chives Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | February 28 | Feb 28 – Mar 14 |
| Harvest | May 2 | May 2 – Jul 11 |
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
0.4"/week · Only during dry spells
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 9b
📆 Growing Season
281 days in San Benito County
Growing Tips for Chives in San Benito County
Direct sow Chives outdoors after February 21 in San Benito County when soil has warmed and frost danger has passed.
Common pests for Chives in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.
General growing tips
Start from seed or divisions in spring. Cut back to 2 inches after flowering to encourage fresh growth. Both the leaves and flowers are edible and delicious.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Chives in Other Locations
Frequently Asked Questions
When should I plant Chives in San Benito County, CA?
San Benito County is in Zone 9b with an average last frost of February 21. Plan your Chives planting based on this frost date — see the calendar above for exact timing.
What planting zone is San Benito County, CA?
San Benito County, California is in USDA Hardiness Zone 9b. The average last spring frost is February 21 and first fall frost is November 29.
Your San Benito County Garden Planner — Free
A 24-page printable planner built for San Benito 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.