Flower Annual Intermediate Level 🪴 Container Friendly

Petunias

Petunias is a Annual Flower that thrives in USDA Zones 9–11. It requires full_sun and takes around 70–85 days to mature.

SunlightFull Sun

Water NeedMedium

Days to Maturity🌱 70–85 days

USDA Zones🗺️ 9–11

Starts From📦 Seed

Transplant Indoor Seed Start

📅 US Planting Timing

🪴

Start Indoors

10 weeks

before last frost

🔄

Transplant

+14 days after frost

🌡️ Temps & Growth (Fahrenheit)

🪱 Soil Temp

Minimum	60°F
Optimal	70–80°F

💨 Air Temp

Minimum	55°F
Optimal	65–75°F

🌱 Germination Temp

Minimum	70°F
Optimal	72–78°F

❄️ Frost Tolerance▲ Low

🔥 Heat Tolerance▲▲▲ High

GDD Base Temp 50°F Growth stops below this temp

GDD Required 1100 Heat units needed to mature

📏 Garden Spacing & Soil

Spacing (Inches)

Plant Depth	0" (in)
Plant Spacing	12" (in)
Row Spacing	12" (in)
Square Foot (SFG)	1 plants per sq. ft.

Soil & Water

pH Range	5.50 – 6.50
Drainage	Well Drained
Water/Week	1 – 1.5" inches
Soil Types	LoamSandy

🪴 Container Gardening

This plant is highly suitable for growing in pots, grow bags, or urban balconies.

Min. Depth 8" (in)

Min. Volume 1 Gal

🌎 US State Planting Forecast

Where can you plant Petunias right now? Based on current weather, soil temperature & frost calendar for each state.

5 ✅ Ready

19 ⚠️ Risk

26 🚫 Not yet

AK ⏳ Oct 16, 04:00 AKDT AL ⚠️ Oct 16, 07:00 CDT AR ⚠️ Oct 16, 07:00 CDT AZ ⚠️ Oct 16, 05:00 MST CA ⚠️ Oct 16, 05:00 PDT CO ⏳ Oct 16, 06:00 MDT CT ⏳ Oct 16, 08:00 EDT DE ⚠️ Oct 16, 08:00 EDT FL ⚠️ Oct 16, 08:00 EDT GA ⚠️ Oct 16, 08:00 EDT HI ⚠️ Oct 16, 02:00 HST IA ⏳ Oct 16, 07:00 CDT ID ⏳ Oct 16, 06:00 MDT IL ⏳ Oct 16, 07:00 CDT IN ⚠️ Oct 16, 08:00 EDT KS ⏳ Oct 16, 07:00 CDT KY ⚠️ Oct 16, 08:00 EDT LA ✅ Oct 16, 07:00 CDT MA ⏳ Oct 16, 08:00 EDT MD ⚠️ Oct 16, 08:00 EDT ME ⏳ Oct 16, 08:00 EDT MI ⏳ Oct 16, 08:00 EDT MN ⏳ Oct 16, 07:00 CDT MO ⏳ Oct 16, 07:00 CDT MS ⚠️ Oct 16, 07:00 CDT MT ⏳ Oct 16, 06:00 MDT NC ✅ Oct 16, 08:00 EDT ND ⏳ Oct 16, 07:00 CDT NE ⏳ Oct 16, 07:00 CDT NH ⏳ Oct 16, 08:00 EDT NJ ⚠️ Oct 16, 08:00 EDT NM ⏳ Oct 16, 06:00 MDT NV ⏳ Oct 16, 05:00 PDT NY ⚠️ Oct 16, 08:00 EDT OH ⚠️ Oct 16, 08:00 EDT OK ⏳ Oct 16, 07:00 CDT OR ⏳ Oct 16, 05:00 PDT PA ⚠️ Oct 16, 08:00 EDT RI ⚠️ Oct 16, 08:00 EDT SC ✅ Oct 16, 08:00 EDT SD ⏳ Oct 16, 07:00 CDT TN ⚠️ Oct 16, 07:00 CDT TX ⚠️ Oct 16, 07:00 CDT UT ⏳ Oct 16, 06:00 MDT VA ✅ Oct 16, 08:00 EDT VT ⏳ Oct 16, 08:00 EDT WA ⏳ Oct 16, 05:00 PDT WI ⏳ Oct 16, 07:00 CDT WV ✅ Oct 16, 08:00 EDT WY ⏳ Oct 16, 06:00 MDT

Ready to plant Plant with caution Not recommended

📅 Personal Planting Timeline

Your personalized schedule based on frost dates and current soil temperature. Showing default Zone 7 — set your location for exact dates.

❄️ Last frost: Mar 31 🍂 First fall frost: Nov 26 ✅ 240 frost-free days

🏠

Start seeds indoors Jan 20

269 days ago

🪴

Transplant seedlings outdoors Apr 14

185 days ago

🥕

Earliest harvest Jun 23 ~

115 days ago

🏁

Latest harvest Jul 8 ~

100 days ago

💧 Watering Forecast

Need: 1.25" / week · based on forecast rain & evaporation

📍 Set location for forecast

🌱

Enter your city or ZIP above to see a personalized 5-day watering schedule.

🌡️ Plant Stress Forecast

5-day temperature stress outlook for this plant

📍 Set location for forecast

🌿

Enter your city or ZIP above to see if your plant will experience heat or cold stress this week.

🌡️ Growth Prediction

GDD-based harvest forecast · 1100 GDD needed

📍 Set location & planting date

🌾

Enter your location and when you planted to get a personalized harvest prediction based on real temperature data.

📅 I planted on:

🤝 Companion Planting

✅ Plant Near

Asparagus
Basil
Marigolds
Peppers
Tomatoes

❌ Keep Away From

Potatoes