When to plant Leeks in Inyo County, CA
For Leeks in Inyo County, the safe spring window opens around January 1 and closes around January 22. Last expected frost is January 15, first fall frost December 10, giving a 330-day growing season. A second sowing from October 1 to October 15 extends the harvest into fall.
When to Plant Leeks in Inyo County, CA
Your August planting checklist for Inyo County, California
We've pulled the most time-sensitive tasks for Inyo County, California this August and put them front and centre. Tackle them in order.
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.
Inyo County, California is in USDA Zone 8b. The average last spring frost is January 15 and the first fall frost is December 10, giving you a growing season of approximately 329 days.
At an elevation of 4,562 feet, Inyo County receives approximately 16.4 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Leeks during the growing season. With low rainfall, drip irrigation is essential for growing Leeks successfully. Mulch heavily to conserve soil moisture.
Inyo County Soil Profile
Soil Type
Loam
Soil pH
6-7.8
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 Inyo County
How your county's soil matches Leeks's growing requirements.
Soil pH
Your soil pH (6.0–7.8) overlaps with Leeks's range (6.0–7.0), though not a perfect match.
Soil Texture
The loam soil in Inyo County is excellent for Leeks — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Leeks.
How to Plant Leeks
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Leeks Water Budget
Water stress score is 10/10 — 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 | 3.5" | 3.3" | 0.2" | 💧 Light watering |
| Feb | 3.5" | 3.4" | 0.1" | 💧 Light watering |
| Mar | 3.5" | 2.5" | 1" | 💧 Light watering |
| Apr | 3.5" | 1.3" | 2.2" | 🚿 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" | 0.6" | 2.9" | 🚿 Regular watering |
| Nov | 3.5" | 1.7" | 1.8" | 🚿 Regular watering |
| Dec | 3.5" | 2.8" | 0.7" | 💧 Light watering |
Water needs are for active growing months only (Jan–Dec in Inyo 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 — Inyo County, CA
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 11 | Dec 11 – Dec 25 |
| Transplant Outdoors | January 15 | Jan 15 – Jan 29 |
| Direct Sow | January 1 | Jan 1 – Jan 22 |
| Harvest | April 16 | Apr 16 – Jul 2 |
| Fall Sowing | October 1 | Oct 1 – Oct 15 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Transplant Outdoors Direct Sow |
| February | — |
| March | — |
| April | Harvest |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | Fall Sowing |
| November | — |
| December | Start Indoors |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · 2-3 times/week
📅 Days to Maturity
90–150 days
🧪 Soil pH
Needs 6–7 · Your soil: acceptable
🗺️ USDA Zone
Zone 8b
📆 Growing Season
329 days in Inyo County
Growing Tips for Leeks in Inyo County
Direct sow Leeks outdoors after January 15 in Inyo County when soil has warmed and frost danger has passed.
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 Inyo County, CA?
Inyo County is in Zone 8b with an average last frost of January 15. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Inyo County, CA?
Inyo County, California is in USDA Hardiness Zone 8b. The average last spring frost is January 15 and first fall frost is December 10.
When should I plant Leeks in Inyo County, CA?
In Inyo County, CA, plant Leeks after the last frost (around January 15) and before the first frost (around December 10). Best results when soil holds above 50°F.
What growing zone is Inyo County, CA for Leeks?
Inyo County sits in USDA Zone 8b. Leeks grows reliably in zones 3a through 10b, so it's a good fit here.
Can Leeks grow in Inyo County's climate?
Yes — Leeks grows well in Inyo County's temperate climate. Inyo County averages a 330-day frost-free season, with last frost around January 15 and first frost around December 10.
Your Inyo County Garden Planner — Free
A 22-page printable planner built for Inyo 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.