Frost dates · Hardiness zones · Plant-by-plant timing
Know your planting window.
Enter your last frost date and a crop below. We show a real start-seeds and transplant window, sourced from a university extension guide, not a guess.
Latest guides
All guidesWhen to Plant Cucumbers in Zones 5-6 (2026)
When to start cucumber seeds indoors or direct-sow outside in USDA zones 5-6, based on soil warmth rather than a fixed calendar date, with a named source.
When to Plant Garlic in Zones 5-6 (2026)
When to plant garlic cloves after the first fall frost in USDA zones 5-6, and when to expect a late-June to late-July harvest, with a source.
When to Plant Grass Seed in Zones 5-6 (2026)
When to seed a lawn in USDA zones 5-6, why timing matters more for seed than sod, with a source.
When to Plant Peppers in Zones 5-6 (2026)
When to start pepper seeds indoors and when to transplant outside in USDA zones 5-6, based on your own last frost date, with a source.
When to Plant Potatoes in Zones 5-6 (2026)
When to plant seed potatoes in USDA zones 5-6, what soil-warmth signs to look for, and when to expect new potatoes, with a source.
When to Plant Tomatoes in Zones 5-6 (2026)
When to start tomato seeds indoors and when to transplant outside in USDA zones 5-6, based on your own last frost date, with a source.
Choose your zone
Guides are grouped by USDA Plant Hardiness Zone band, since frost timing tracks climate, not state lines.
Zones 3-4
Coming soon.
Zones 5-6
Planting guides for this zone band.
Zones 7-8
Coming soon.
Zones 9-10
Coming soon.
Zones 11-13
Coming soon.
Sourced, not guessed
Every window traces to a named university extension guide or public climate dataset.
Dated
Each guide shows the date we last compared it with its sources. How we work
Independent
Not an extension office. We link to the source so you can double-check.