When to plant Leeks in Kings County, CA
Aim to plant Leeks in Kings County on or after January 24; the window stays open through February 14. Kings County's 292-day frost-free season gives you plenty of room for a spring and fall cycle. A second sowing from October 7 to October 21 extends the harvest into fall.
When to Plant Leeks in Kings County, CA
Your June game plan for Kings County, California
We've pulled the most time-sensitive tasks for Kings County, California this June and put them front and centre. Tackle them in order.
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Bring in the leeks
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
July prep starts now
- First harvests: leeks
Leeks are a mild, sweet allium that produces long white shanks. They are more refined than onions and are a key ingredient in soups, stews, and gratins.
Kings County, California is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 2, giving you a growing season of approximately 291 days.
At an elevation of 2,065 feet, Kings County receives approximately 18.8 inches of rainfall annually with predominantly loam soil. Summer highs average 102°F, so Leeks may need afternoon shade and extra watering during peak heat. With low rainfall, drip irrigation is essential for growing Leeks successfully. Mulch heavily to conserve soil moisture.
Kings County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.4
Drainage
Well Drained
Leeks 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 Kings County
How your county's soil matches Leeks's growing requirements.
Soil pH
Your soil pH (6.5–7.4) overlaps with Leeks's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Kings County is excellent for Leeks — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.1%). Annual compost additions will help Leeks.
How to Plant Leeks
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Leeks Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Leeks
Leeks needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Leeks Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.6" | 0" | ❄️ Dormant |
| Feb | 3.5" | 4" | 0" | ✅ Rainfall sufficient |
| Mar | 3.5" | 3.2" | 0.3" | 💧 Light watering |
| Apr | 3.5" | 1.4" | 2.1" | 🚿 Regular watering |
| May | 3.5" | 0.5" | 3" | 🚿 Regular watering |
| Jun | 3.5" | 0.1" | 3.4" | 🚿 Regular watering |
| Jul | 3.5" | 0" | 3.5" | 🚿 Regular watering |
| Aug | 3.5" | 0" | 3.5" | 🚿 Regular watering |
| Sep | 3.5" | 0.2" | 3.3" | 🚿 Regular watering |
| Oct | 3.5" | 0.7" | 2.8" | 🚿 Regular watering |
| Nov | 3.5" | 1.9" | 1.6" | 💧 Light watering |
| Dec | 3.5" | 3.2" | 0.3" | 💧 Light watering |
Water needs are for active growing months only (Feb–Dec in Kings County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Leeks 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.
Leeks Planting Timeline — Kings County, CA
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 17 | Jan 17 – Jan 31 |
| Transplant Outdoors | February 14 | Feb 14 – Feb 28 |
| Direct Sow | January 24 | Jan 24 – Feb 14 |
| Harvest | May 16 | May 16 – Aug 1 |
| Fall Sowing | October 7 | Oct 7 – Oct 21 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · 1-2 times/week
📅 Days to Maturity
90–150 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 9a
📆 Growing Season
291 days in Kings County
Growing Tips for Leeks in Kings County
Direct sow Leeks outdoors after February 14 in Kings County when soil has warmed and frost danger has passed.
With summer highs reaching 102°F in Kings County, provide afternoon shade for Leeks and water deeply in the morning.
Common pests for Leeks in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.
General growing tips
Start seeds indoors 10-12 weeks before last frost. Transplant into trenches and hill soil around stems as they grow to increase the white portion. Harvest as needed.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Leeks in Other Locations
Frequently Asked Questions
When should I plant Leeks in Kings County, CA?
Kings County is in Zone 9a with an average last frost of February 14. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Kings County, CA?
Kings County, California is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 2.
When should I plant Leeks in Kings County, CA?
In Kings County, CA, plant Leeks after the last frost (around February 14) and before the first frost (around December 2). Best results when soil holds above 50°F.
What growing zone is Kings County, CA for Leeks?
Kings County sits in USDA Zone 9a. Leeks grows reliably in zones 3a through 10b, so it's a good fit here.
Can Leeks grow in Kings County's climate?
Yes — Leeks grows well in Kings County's temperate climate. Kings County averages a 292-day frost-free season, with last frost around February 14 and first frost around December 2.
Your Kings County Garden Planner — Free
A 22-page printable planner built for Kings County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.