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When to Plant Celosia in Chambers County, TX

Chambers County, Texas Zone 9b June

June in Chambers County, Texas — your action list

June is a pivotal month for Chambers County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost February 12
Avg. first frost December 6
Soil temp (4") 88°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. Harvest celosia as they ripen

    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: 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.

Chambers County, Texas is in USDA Zone 9b. The average last spring frost is February 12 and the first fall frost is December 6, giving you a growing season of approximately 297 days.

At an elevation of 1 feet, Chambers County receives approximately 66.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 99°F, so Celosia may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Celosia will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Celosia root diseases.

Annual Blooms in Summer Pollinator-friendly Good for cutting
Chambers County, TX (Zone 9b) Year-round
297 days
Last Spring Frost February 12
297 growing days
First Fall Frost December 6

Chambers County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Celosia Planting Risk Windows

Early Start (70% safe) ✓ Fits season (63 days to spare)
Start indoors: Dec 27 Transplant: Jan 3 🌸 Bloom: Mar 7 – Sep 26
Recommended (50%) ✓ Fits season (52 days to spare)
Start indoors: Jan 15 Transplant: Jan 22 🌸 Bloom: Mar 26 – Oct 15
Safe Start (90%) ✓ Fits season (44 days to spare)
Start indoors: Feb 6 Transplant: Feb 13 🌸 Bloom: Apr 17 – Nov 6

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 Chambers County

How your county's soil matches Celosia's growing requirements.

Soil pH

Your soil pH (5.3–6.5) is more acidic than Celosia prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Chambers County warms quickly in spring but drains fast. Celosia will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Celosia.

How to Plant Celosia

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

Succession Planting Celosia

5
successive plantings in your 297-day season

Sow every 6.9 weeks. Last sowing by Sep 07 to harvest before frost.

Celosia Water Budget

Plant needs
0.5″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 1.4" 0" ❄️ Dormant
Feb 2.2" 2.3" 0" ✅ Rainfall sufficient
Mar 2.2" 3.9" 0" ✅ Rainfall sufficient
Apr 2.2" 6.6" 0" ✅ Rainfall sufficient
May 2.2" 10" 0" ✅ Rainfall sufficient
Jun 2.2" 11.3" 0" ✅ Rainfall sufficient
Jul 2.2" 8.5" 0" ✅ Rainfall sufficient
Aug 2.2" 7.2" 0" ✅ Rainfall sufficient
Sep 2.2" 6.4" 0" ✅ Rainfall sufficient
Oct 2.2" 4.2" 0" ✅ Rainfall sufficient
Nov 2.2" 2.4" 0" ✅ Rainfall sufficient
Dec 2.2" 1.8" 0.4" 💧 Light watering

Water needs are for active growing months only (Feb–Dec in Chambers 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 ~1,819 GDD — county provides 7,226 GDD Excellent fit

Celosia Planting Timeline — Chambers County, TX

Celosia Planting Calendar

Activity When Date Range
Start Indoors January 15 Jan 15 – Jan 29
Transplant Outdoors January 22 Jan 22 – Feb 5
Direct Sow January 22 Jan 22 – Feb 12
Bloom March 26 Mar 26 – Oct 15

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

297 days in Chambers County

Growing Tips for Celosia in Chambers County

Direct sow Celosia outdoors after February 12 in Chambers County when soil has warmed and frost danger has passed.

Sandy soil in Chambers County dries quickly — mulch Celosia with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 99°F in Chambers County, provide afternoon shade for Celosia and water deeply in the morning.

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 Chambers County, TX?

Chambers County is in Zone 9b with an average last frost of February 12. Plan your Celosia planting based on this frost date — see the calendar above for exact timing.

What planting zone is Chambers County, TX?

Chambers County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 12 and first fall frost is December 6.

🌱

Your Chambers County Garden Planner — Free

A 22-page printable planner built for Chambers 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.

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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 Chambers County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

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