Indoor Sowing Windows
Start seeds 6 to 8 weeks before your last expected frost date for optimal transplant readiness.
Read more →Home › Seasonal Grower’s Calendar
Seasonal Grower’s Calendar
Your local frost dates and soil patterns shape when and how to plant heirloom tomatoes. This calendar uses verified regional frost data and university extension records to guide your planting sequence—from indoor sowing to pollination support—so you align with nature’s rhythm, not a calendar’s guesswork. Adjust for your setup: raised beds warm sooner, greenhouses extend seasons, and direct sows need stable warmth. Timely action prevents missed windows and sets plants up for resilience.
Hardening Schedule
Gradually acclimate indoor-grown seedlings outdoors over 7 to 10 days to prevent transplant shock.
Read more →
Transplant Threshold
Wait until soil reaches 60 degrees at 4-inch depth and nights consistently exceed 50 before planting outdoors.
Read more →
Peak Pollination Window
Early summer is when flowers set fruit—support pollinators and avoid disturbance during this critical phase.
Read more →Get in touch
Questions or ideas about tomatofocus.com? Send a note and we will get back to you.