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When to plant Celosia in Inyo County, CA

Spring Celosia in Inyo County goes in January 1–January 22, once nighttime temps stop dipping near freezing.

When to Plant Celosia in Inyo County, CA

Inyo County, California Zone 8b July

Inyo County, California gardeners: here's your July plan

Your garden in Inyo County, California is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost January 15
Avg. first frost December 10
Soil temp (4") 73°F
Watering Critical
Pest pressure High
Daylight 14.3 hrs
  1. Bring in the celosia

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Coming up in August — start thinking about
  • First harvests: celosia

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Celosia (Celosia argentea) encompasses the vivid cockscomb (cristata) and feathery plumed (plumosa) types that explode with color in summer heat. Drought-tolerant and disease-resistant, they thrive in the hottest parts of the season and produce long-lasting blooms both in the garden and as cut or dried flowers. A reliable filler in sunny annual beds.

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 Celosia during the growing season. With low rainfall, drip irrigation is essential for growing Celosia successfully. Mulch heavily to conserve soil moisture.

Annual Blooms in Summer Pollinator-friendly Good for cutting
Inyo County, CA (Zone 8b) Year-round
329 days
Last Spring Frost January 15
329 growing days
First Fall Frost December 10

Inyo County Soil Profile

Soil Type

Loam

Soil pH

6-7.8

Drainage

Well Drained

Celosia Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Start indoors: Dec 10 Transplant: Dec 24 🌸 Bloom: Feb 25 – Aug 5
Recommended (50%) ✓ Fits season (119 days to spare)
Start indoors: Dec 18 Transplant: Jan 1 🌸 Bloom: Mar 5 – Aug 13
Safe Start (90%) ✓ Fits season (105 days to spare)
Start indoors: Jan 12 Transplant: Jan 26 🌸 Bloom: Mar 30 – Sep 7

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 Celosia's growing requirements.

Soil pH

Your soil pH (6.0–7.8) overlaps with Celosia's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Inyo County is excellent for Celosia — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Celosia.

How to Plant Celosia

0.1"
Planting Depth
9"
Between Plants
12"
Between Rows

Succession Planting Celosia

6
successive plantings in your 329-day season

Sow every 6.9 weeks. Last sowing by Sep 11 to harvest before frost.

Celosia Water Budget

Plant needs
0.5″/week
Rainfall provides
0.2″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 1,027 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Celosia

Celosia 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 Celosia Needs Rainfall You Supplement Action
Jan 2.2" 3.3" 0" ✅ Rainfall sufficient
Feb 2.2" 3.4" 0" ✅ Rainfall sufficient
Mar 2.2" 2.5" 0" ✅ Rainfall sufficient
Apr 2.2" 1.3" 0.9" 💧 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" 0.6" 1.6" 🚿 Regular watering
Nov 2.2" 1.7" 0.5" 💧 Light watering
Dec 2.2" 2.8" 0" ✅ Rainfall sufficient

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.

Celosia 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.

Celosia needs ~1,200 GDD — county provides 5,280 GDD Excellent fit

Celosia Planting Timeline — Inyo County, CA

Celosia Planting Calendar

Activity When Date Range
Start Indoors December 18 Dec 18 – Jan 1
Transplant Outdoors January 1 Jan 1 – Jan 15
Direct Sow January 1 Jan 1 – Jan 22
Bloom March 5 Mar 5 – Aug 13

Plant 0.1" deep · 9" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January Start Indoors Transplant Outdoors Direct Sow
February
March Bloom
April Bloom
May Bloom
June Bloom
July Bloom
August Bloom
September
October
November
December Start Indoors

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · 1-2 times/week

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

329 days in Inyo County

Growing Tips for Celosia in Inyo County

Direct sow Celosia outdoors after January 15 in Inyo County when soil has warmed and frost danger has passed.

Inyo County receives only 16" of rain annually. Celosia needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 4–6 weeks before last frost, or direct-sow after soil warms above 60°F. Does not transplant well from large pots — sow in small cells or direct-sow. Needs full sun and warm soil; cold stress causes stunting. Pinch first bloom to encourage branching. Water at the base; wet foliage encourages fungal issues. Excellent dried flower — harvest before seeds set for the best color retention.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Celosia in Inyo County, CA?

Inyo County is in Zone 8b with an average last frost of January 15. Plan your Celosia 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 Celosia in Inyo County, CA?

In Inyo County, CA, plant Celosia 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 Celosia?

Inyo County sits in USDA Zone 8b. Celosia grows reliably in zones 3a through 11b, so it's a good fit here.

Can Celosia grow in Inyo County's climate?

Yes — Celosia 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.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Inyo County, CA. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.