When to plant in Troutdale, OR
Planting dates worked out from Troutdale's own frost records, not a generic zone chart.
Last spring frost
- Early · riskyMar 39 years in 10 still get a later frost
- TypicalMar 23about half of years get a later frost
- Safe to plant outApr 191 year in 10 gets a later frost
Hardy crops like peas and spinach are timed from the typical date. Wait for the safe date before planting out tomatoes, peppers and squash.
First fall frost
- EarlyOct 161 year in 10 has frost by then
- TypicalNov 10about half of years have had frost
- LateDec 39 years in 10 have had frost by then
A typical year has 231 frost-free days. Plan for tender crops to be ripe by the early date.
Station used: Troutdale · 1.6 km away · station 10 m, town 39 m. How we match towns to stations
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Mar 1 – Mar 15 | Apr 26 – May 10 | Jun 20 |
| Sweet pepper | Feb 15 – Mar 1 | Apr 26 – May 10 | Jun 25 |
| Lettuce (leaf) | Jan 19 – Jan 26 | Feb 23 – Mar 9 | Apr 4 |
| Peas | — | Feb 15 – Mar 15 | Apr 11 |
| Bush beans | — | Apr 18 – May 9 | Jun 7 |
| Carrot | — | Mar 14 – Apr 25 | May 13 |
| Beet | — | Mar 14 – Apr 25 | May 3 |
| Potato | — | Mar 14 – Apr 4 | May 23 |
| Kale | Jan 12 – Jan 26 | Feb 23 – Mar 9 | Apr 7 |
| Broccoli | Jan 12 – Jan 26 | Feb 23 – Mar 16 | Apr 24 |
| Cucumber | Mar 29 – Apr 5 | Apr 26 – May 10 | Jun 15 |
| Summer squash and zucchini | Mar 29 – Apr 5 | Apr 26 – May 10 | Jun 10 |
| Winter squash | Mar 29 – Apr 5 | Apr 26 – May 10 | Jul 15 |
| Sweet corn | — | Apr 18 – May 9 | Jun 17 |
| Onion (from sets) | — | Feb 23 – Mar 16 | May 24 |
| Garlic | — | Oct 18 – Nov 15 (fall) | following summer |
| Spinach | — | Feb 15 – Mar 15 | Mar 25 |
| Basil | Mar 15 – Mar 29 | Apr 26 – May 10 | Jun 22 |
Troutdale's weather over time
How the growing season has shifted here, year by year, from the station's own records.
See the data as a table
| Year | Last spring frost |
|---|---|
| 1949 | Apr 30 |
| 1950 | Apr 24 |
| 1951 | Apr 5 |
| 1952 | May 2 |
| 1960 | Mar 19 |
| 1961 | Apr 23 |
| 1962 | Mar 28 |
| 1963 | Apr 2 |
| 1964 | May 14 |
| 1965 | Apr 11 |
| 1966 | Mar 22 |
| 1967 | Mar 12 |
| 1968 | Apr 13 |
| 1969 | Mar 14 |
| 1970 | Apr 12 |
| 1971 | Apr 3 |
| 1972 | Apr 22 |
| 1973 | Mar 23 |
| 1974 | Mar 18 |
| 1975 | Apr 9 |
| 1976 | Mar 12 |
| 1977 | Apr 19 |
| 1979 | Mar 19 |
| 1980 | Apr 2 |
| 1987 | Mar 28 |
| 1988 | Apr 8 |
| 1989 | Mar 23 |
| 1990 | Mar 12 |
| 1991 | Mar 27 |
| 1992 | Jan 21 |
| 1993 | Mar 2 |
| 1994 | Mar 6 |
| 1995 | Mar 26 |
| 2000 | Apr 8 |
| 2001 | Apr 14 |
| 2002 | Mar 18 |
| 2003 | Mar 24 |
| 2004 | Apr 2 |
| 2005 | Mar 21 |
| 2007 | May 23 |
| 2008 | Apr 21 |
| 2010 | Mar 19 |
| 2011 | Apr 20 |
| 2013 | Mar 10 |
| 2014 | Mar 24 |
| 2015 | Mar 6 |
| 2016 | Mar 18 |
| 2017 | Feb 25 |
| 2018 | Apr 4 |
| 2019 | Mar 12 |
| 2020 | Mar 23 |
| 2021 | Apr 14 |
| 2022 | Apr 15 |
| 2023 | Mar 27 |
| 2024 | Apr 17 |
| 2025 | Mar 7 |
See the data as a table
| Year | Frost-free days |
|---|---|
| 1949 | 168 |
| 1950 | 159 |
| 1951 | 204 |
| 1952 | 196 |
| 1960 | 229 |
| 1961 | 188 |
| 1962 | 244 |
| 1963 | 231 |
| 1964 | 183 |
| 1965 | 158 |
| 1966 | 211 |
| 1967 | 251 |
| 1968 | 204 |
| 1969 | 263 |
| 1970 | 198 |
| 1971 | 196 |
| 1972 | 159 |
| 1973 | 223 |
| 1974 | 279 |
| 1975 | 222 |
| 1976 | 256 |
| 1977 | 202 |
| 1979 | 245 |
| 1987 | 260 |
| 1988 | 235 |
| 1989 | 166 |
| 1992 | 292 |
| 1993 | 248 |
| 2000 | 217 |
| 2001 | 206 |
| 2002 | 212 |
| 2003 | 221 |
| 2004 | 216 |
| 2005 | 231 |
| 2010 | 246 |
| 2011 | 205 |
| 2014 | 232 |
| 2015 | 264 |
| 2016 | 262 |
| 2017 | 266 |
| 2018 | 242 |
| 2019 | 229 |
| 2020 | 218 |
| 2021 | 220 |
| 2022 | 207 |
| 2023 | 241 |
| 2024 | 226 |
| 2025 | 298 |
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1949 | 16.2 °C |
| 1950 | 15.7 °C |
| 1951 | 16.7 °C |
| 1952 | 16.4 °C |
| 1960 | 15.5 °C |
| 1961 | 16.5 °C |
| 1962 | 15.7 °C |
| 1963 | 15.3 °C |
| 1964 | 14.4 °C |
| 1965 | 16.3 °C |
| 1966 | 16.5 °C |
| 1967 | 17.6 °C |
| 1968 | 16.3 °C |
| 1969 | 16.9 °C |
| 1970 | 16.3 °C |
| 1971 | 16.1 °C |
| 1972 | 16.4 °C |
| 1973 | 16.7 °C |
| 1974 | 16.8 °C |
| 1975 | 16.2 °C |
| 1976 | 16.2 °C |
| 1977 | 16.6 °C |
| 1979 | 17.2 °C |
| 1987 | 17.5 °C |
| 1988 | 16.4 °C |
| 1991 | 16.6 °C |
| 1992 | 18.1 °C |
| 1993 | 17.1 °C |
| 1994 | 18.0 °C |
| 2000 | 16.9 °C |
| 2001 | 16.3 °C |
| 2002 | 16.7 °C |
| 2003 | 17.4 °C |
| 2005 | 15.9 °C |
| 2007 | 15.0 °C |
| 2008 | 15.6 °C |
| 2009 | 16.8 °C |
| 2010 | 15.2 °C |
| 2011 | 15.2 °C |
| 2013 | 16.7 °C |
| 2014 | 17.3 °C |
| 2015 | 17.4 °C |
| 2016 | 17.4 °C |
| 2017 | 17.6 °C |
| 2018 | 17.1 °C |
| 2019 | 17.0 °C |
| 2020 | 16.6 °C |
| 2021 | 17.3 °C |
| 2022 | 16.4 °C |
| 2023 | 17.3 °C |
| 2024 | 16.5 °C |
| 2025 | 17.8 °C |
What this means for you: Since 1949, Troutdale's last spring frost has come about 2 days earlier per decade, on average. The frost-free season has grown by about 6 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Troutdale (NOAA GHCN-Daily). Years with too many missing days are left out.