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Weed Grow Planner

Calculate when to plant or move cannabis plants outside, and approximately when they are likely to start flowering, based on daylight hours in your location.

Note on privacy: We do not log location data.

Enter a city name or address to find growing periods for your location

Or use your current location:

Calculating optimal growing periods...

Location

Coordinates:

Spring Transition

When daylight exceeds 12.5 hours

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Plants can be safely moved outdoors after this date

Fall Transition

When daylight drops below 12.5 hours

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Flowering will begin around this date

Climate Zone

Growing region classification

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Climate classification helps identify optimal growing strategies

Frost Warnings

Spring Last Frost

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Historically, there's a risk of frost until this date

Fall First Frost

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Typically, your first frost of the season will be around this date

Growing Season: -- days
Frost-Free Period: -- days

Suggested Cultivar Types:

Frost data is based on historical temperatures and may vary. Always monitor your local weather forecasts.

Frost data provided by Open-Meteo.

Growing Recommendations

Climate Profile: --

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Growing Challenges

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Recommended Strain Traits

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Climate-Specific Advice

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Recommendations are based on Köppen-Geiger climate classifications and cannabis growing research.

Climate data provided by locally stored Köppen-Geiger climate classification database.

These dates are calculated based on the 12.5-hour daylight threshold for cannabis flowering.

Sorry, we couldn't calculate the growing periods. Please try a different location.

This site contains educational content about cannabis cultivation. By continuing, you confirm you are 21 or older.

Note: This tool is for informational purposes only. Local climate conditions may affect actual growing cycles.

Sunrise and sunset data provided by Sunrise-Sunset.org.