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When to Plant Zinnia in Bee County, TX

Bee County, Texas Zone 9b June

Your June game plan for Bee County, Texas

June rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Bee County, Texas.

Avg. last frost February 13
Avg. first frost December 11
Soil temp (4") 82°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
  1. Bring in the zinnia

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

To set up a strong July, finish these tasks
  • First harvests: zinnia

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Zinnia (Zinnia elegans) is a fast-growing, heat-loving annual that produces bold, dahlia-like blooms from early summer until hard frost. One of the easiest flowers to grow from direct-sown seed, zinnias thrive in hot, dry conditions and are magnets for butterflies and beneficial insects. They make excellent companion plants alongside marigolds in the vegetable garden.

Bee County, Texas is in USDA Zone 9b. The average last spring frost is February 13 and the first fall frost is December 11, giving you a growing season of approximately 301 days.

At an elevation of 2,076 feet, Bee County receives approximately 68.3 inches of rainfall annually with predominantly loam soil. Summer highs average 103°F, so Zinnia may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Zinnia root diseases.

Annual Blooms in Summer Pollinator-friendly Deer-resistant Good for cutting
Bee County, TX (Zone 9b) Year-round
301 days
Last Spring Frost February 13
301 growing days
First Fall Frost December 11
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Bee County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.5

Drainage

Well Drained

Zinnia Planting Risk Windows

Early Start (70% safe) ✓ Fits season (89 days to spare)
Start indoors: Dec 29 Transplant: Dec 29 🌸 Bloom: Mar 9 – Sep 7
Recommended (50%) ✓ Fits season (77 days to spare)
Start indoors: Jan 16 Transplant: Jan 16 🌸 Bloom: Mar 27 – Sep 25
Safe Start (90%) ✓ Fits season (67 days to spare)
Start indoors: Feb 5 Transplant: Feb 5 🌸 Bloom: Apr 16 – Oct 15

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 Bee County

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

Soil pH

Your soil pH (6.6–7.5) is within Zinnia's preferred range (5.5–7.5).

Soil Texture

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

Organic Matter

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

How to Plant Zinnia

0.3"
Planting Depth
12"
Between Plants
18"
Between Rows

Succession Planting Zinnia

6
successive plantings in your 301-day season

Sow every 6.9 weeks. Last sowing by Oct 02 to harvest before frost.

Zinnia Water Budget

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

Monthly Watering Guide for Zinnia

Zinnia 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 Zinnia Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 2.2" 2.4" 0" ✅ Rainfall sufficient
Mar 2.2" 4.6" 0" ✅ Rainfall sufficient
Apr 2.2" 6.8" 0" ✅ Rainfall sufficient
May 2.2" 10.5" 0" ✅ Rainfall sufficient
Jun 2.2" 9.5" 0" ✅ Rainfall sufficient
Jul 2.2" 8.8" 0" ✅ Rainfall sufficient
Aug 2.2" 8.1" 0" ✅ Rainfall sufficient
Sep 2.2" 7.3" 0" ✅ Rainfall sufficient
Oct 2.2" 3.9" 0" ✅ Rainfall sufficient
Nov 2.2" 2.6" 0" ✅ Rainfall sufficient
Dec 2.2" 1.9" 0.3" 💧 Light watering

Water needs are for active growing months only (Feb–Dec in Bee County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Zinnia 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.

Zinnia needs ~1,771 GDD — county provides 8,229 GDD Excellent fit

Zinnia Planting Timeline — Bee County, TX

Zinnia Planting Calendar

Activity When Date Range
Start Indoors January 16 Jan 16 – Jan 30
Transplant Outdoors January 16 Jan 16 – Jan 30
Direct Sow January 16 Jan 16 – Feb 6
Bloom March 27 Mar 27 – Sep 25

Plant 0.3" deep · 12" apart · Rows 18" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–70 days

🧪 Soil pH

Needs 5.5–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 9b

📆 Growing Season

301 days in Bee County

Growing Tips for Zinnia in Bee County

Direct sow Zinnia outdoors after February 13 in Bee County when soil has warmed and frost danger has passed.

With summer highs reaching 103°F in Bee County, provide afternoon shade for Zinnia and water deeply in the morning.

Common pests for Zinnia in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct-sow after last frost when soil reaches 60°F; seeds germinate in 5-7 days. In zones 3-5 a brief indoor start (4 weeks) is worthwhile but transplant carefully — zinnias dislike root disturbance. Deadhead frequently to extend bloom. Excellent cut flower; harvesting regularly encourages branching. Avoid overhead watering to reduce powdery mildew.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zinnia in Bee County, TX?

Bee County is in Zone 9b with an average last frost of February 13. Plan your Zinnia planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bee County, TX?

Bee County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 13 and first fall frost is December 11.

🌱

Your Bee County Garden Planner — Free

A 22-page printable planner built for Bee 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 Bee 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.