Tool
Planting calendar by ZIP code
ZIP 98101 · Typical yearChange
Your growing season · ZIP 98101
~249 frost-free days
Roughly March 13 to November 17, in a typical year.
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Hardiness zone
9a
USDA 2023, ZIP 98101
Frost window
March 13
First fall frost: November 17
Nearest station
SEATTLE BOEING FLD, WA US
5.8 mi away
Hollow band = approximate planting season, not adjusted to your frost dates. Tap the plant for the sourced timing.
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Choose the setup for the season ahead
Bands are your nearest NOAA station's 1991-2020 freeze normals shifted by each crop's extension-sourced planting window. Local microclimates vary; use these as a planning baseline. USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service / Oregon State University PRISM Group. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020.
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<iframe id="sprout-planting-calendar" src="https://sproutauthority.com/embed/planting-calendar" title="Sprout Authority planting calendar" width="100%" height="620" loading="lazy" style="border:0;width:100%"></iframe>
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<p style="font:14px/1.5 system-ui,sans-serif">Free <a href="https://sproutauthority.com/tools/planting-calendar">Sprout Authority planting calendar</a> by Sprout Authority.</p>The attribution link is included in the copied HTML.
Common questions
How are these planting dates calculated?
We take your ZIP code's USDA 2023 hardiness zone and the 1991-2020 freeze-date normals from your nearest NOAA weather station, then shift each crop by its planting window from university extension publications. Nothing is hand-typed per crop.
What does the frost risk setting do?
It picks how conservative the frost date is. Cautious uses the date by which a late frost is unlikely (only a 10 percent chance one comes later), so you wait longer and risk fewer losses. Optimistic plants earlier and accepts more risk. Typical year is the median.
My area never frosts. What happens?
If your nearest station shows no reliable freeze, frost-anchored timing does not apply and we say so. Plant by soil temperature and season instead; see each plant guide.
Data sources: USDA 2023 hardiness-zone ZIP listings and NOAA NCEI 1991-2020 freeze normals. Review the station mapping and download the sourceable table on the frost-date dataset page.