When to plant in Quartz Hill, CA
Planting dates worked out from Quartz Hill's own frost records, not a generic zone chart.
Safe to plant out
Apr 13
1 year in 10 has a later frost
Average last frost
Mar 17
about a 50% chance of a later one
Average first fall frost
Nov 12
1 year in 10 by Oct 30
Frost-free days
242
median, 1991–2020
Station used: Palmdale Ap · 12.5 km away · station 765 m, town 761 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Feb 16 – Mar 2 | Apr 13 – Apr 27 | Jun 7 |
| Sweet pepper | Feb 2 – Feb 16 | Apr 13 – Apr 27 | Jun 12 |
| Lettuce (leaf) | Jan 13 – Jan 20 | Feb 17 – Mar 3 | Mar 29 |
| Peas | — | Feb 3 – Mar 3 | Mar 30 |
| Bush beans | — | Apr 6 – Apr 27 | May 26 |
| Carrot | — | Feb 24 – Apr 7 | Apr 25 |
| Beet | — | Feb 17 – Mar 31 | Apr 8 |
| Potato | — | Feb 24 – Mar 17 | May 5 |
| Kale | Jan 6 – Jan 20 | Feb 17 – Mar 3 | Apr 1 |
| Broccoli | Jan 6 – Jan 20 | Feb 17 – Mar 10 | Apr 18 |
| Cucumber | Mar 16 – Mar 23 | Apr 13 – Apr 27 | Jun 2 |
| Summer squash and zucchini | Mar 16 – Mar 23 | Apr 13 – Apr 27 | May 28 |
| Winter squash | Mar 16 – Mar 23 | Apr 13 – Apr 27 | Jul 2 |
| Sweet corn | — | Apr 6 – Apr 27 | Jun 5 |
| Onion (from sets) | — | Feb 17 – Mar 10 | May 18 |
| Garlic | — | Oct 29 – Nov 26 (fall) | following summer |
| Spinach | — | Feb 3 – Mar 3 | Mar 13 |
| Basil | Mar 2 – Mar 16 | Apr 13 – Apr 27 | Jun 9 |
Quartz Hill's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 1934 | Apr 4 |
| 1935 | Apr 18 |
| 1936 | Apr 6 |
| 1937 | Apr 24 |
| 1938 | May 7 |
| 1939 | Mar 15 |
| 1940 | Mar 15 |
| 1941 | Apr 18 |
| 1949 | Mar 29 |
| 1950 | Apr 10 |
| 1951 | Apr 1 |
| 1952 | Mar 23 |
| 1953 | May 2 |
| 1954 | May 1 |
| 1955 | Apr 28 |
| 1956 | Apr 4 |
| 1957 | Apr 21 |
| 1958 | Apr 8 |
| 1959 | Mar 28 |
| 1960 | Mar 10 |
| 1961 | Mar 26 |
| 1962 | Apr 21 |
| 1963 | Apr 22 |
| 1964 | Apr 7 |
| 1965 | Apr 13 |
| 1966 | Apr 20 |
| 1967 | May 1 |
| 1968 | Apr 23 |
| 1969 | Apr 7 |
| 1970 | Apr 23 |
| 1971 | Apr 22 |
| 1972 | Apr 14 |
| 1973 | Apr 5 |
| 1999 | Apr 10 |
| 2000 | Feb 19 |
| 2001 | Apr 13 |
| 2002 | Mar 25 |
| 2003 | Mar 2 |
| 2004 | Mar 1 |
| 2005 | Apr 14 |
| 2006 | Apr 18 |
| 2007 | Mar 4 |
| 2008 | Mar 17 |
| 2009 | Apr 5 |
| 2010 | Mar 15 |
| 2011 | Apr 9 |
| 2012 | Apr 7 |
| 2013 | Mar 10 |
| 2014 | Feb 3 |
| 2015 | Mar 6 |
| 2016 | Feb 20 |
| 2017 | Mar 6 |
| 2018 | Mar 6 |
| 2019 | Mar 16 |
| 2020 | Mar 18 |
| 2021 | Mar 21 |
| 2022 | Mar 12 |
| 2023 | Apr 6 |
| 2024 | Apr 7 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1934 | 230 |
| 1935 | 186 |
| 1936 | 210 |
| 1937 | 196 |
| 1938 | 162 |
| 1939 | 224 |
| 1940 | 233 |
| 1941 | 213 |
| 1949 | 204 |
| 1950 | 213 |
| 1951 | 215 |
| 1952 | 224 |
| 1953 | 173 |
| 1954 | 176 |
| 1955 | 182 |
| 1956 | 203 |
| 1957 | 182 |
| 1958 | 220 |
| 1959 | 222 |
| 1960 | 249 |
| 1961 | 210 |
| 1962 | 208 |
| 1963 | 207 |
| 1964 | 220 |
| 1965 | 226 |
| 1966 | 177 |
| 1967 | 209 |
| 1968 | 196 |
| 1969 | 180 |
| 1970 | 187 |
| 1971 | 177 |
| 1972 | 198 |
| 1973 | 212 |
| 1999 | 221 |
| 2000 | 253 |
| 2001 | 226 |
| 2002 | 246 |
| 2003 | 246 |
| 2004 | 266 |
| 2005 | 216 |
| 2006 | 219 |
| 2007 | 262 |
| 2008 | 208 |
| 2009 | 206 |
| 2010 | 240 |
| 2011 | 207 |
| 2012 | 217 |
| 2013 | 269 |
| 2014 | 287 |
| 2015 | 243 |
| 2016 | 269 |
| 2017 | 257 |
| 2018 | 248 |
| 2019 | 227 |
| 2020 | 235 |
| 2022 | 236 |
| 2023 | 206 |
| 2024 | 213 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1934 | 22.7 °C |
| 1935 | 21.8 °C |
| 1936 | 22.7 °C |
| 1937 | 21.8 °C |
| 1938 | 21.8 °C |
| 1939 | 22.7 °C |
| 1940 | 23.1 °C |
| 1941 | 19.8 °C |
| 1949 | 22.0 °C |
| 1950 | 22.1 °C |
| 1951 | 22.6 °C |
| 1952 | 21.6 °C |
| 1953 | 21.0 °C |
| 1954 | 22.2 °C |
| 1955 | 21.0 °C |
| 1956 | 21.4 °C |
| 1957 | 21.6 °C |
| 1958 | 22.3 °C |
| 1959 | 23.3 °C |
| 1960 | 23.9 °C |
| 1961 | 23.1 °C |
| 1962 | 22.1 °C |
| 1963 | 21.4 °C |
| 1964 | 21.7 °C |
| 1965 | 20.9 °C |
| 1966 | 22.7 °C |
| 1967 | 21.8 °C |
| 1968 | 22.1 °C |
| 1969 | 22.6 °C |
| 1970 | 22.2 °C |
| 1971 | 21.5 °C |
| 1972 | 22.2 °C |
| 1973 | 22.3 °C |
| 1998 | 21.2 °C |
| 1999 | 21.6 °C |
| 2000 | 23.0 °C |
| 2001 | 23.8 °C |
| 2002 | 23.2 °C |
| 2003 | 23.4 °C |
| 2004 | 23.2 °C |
| 2005 | 22.0 °C |
| 2006 | 22.9 °C |
| 2007 | 23.8 °C |
| 2008 | 23.6 °C |
| 2009 | 23.8 °C |
| 2010 | 22.3 °C |
| 2011 | 22.4 °C |
| 2012 | 24.3 °C |
| 2013 | 24.1 °C |
| 2014 | 24.1 °C |
| 2015 | 23.3 °C |
| 2016 | 23.8 °C |
| 2017 | 24.2 °C |
| 2018 | 24.6 °C |
| 2019 | 22.9 °C |
| 2020 | 23.9 °C |
| 2021 | 25.0 °C |
| 2022 | 24.7 °C |
| 2023 | 22.3 °C |
| 2024 | 24.6 °C |
What this means for you: Since 1934, Quartz Hill's last spring frost has come about 4 days earlier per decade, on average. The frost-free season has grown by about 5 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Palmdale Ap (NOAA GHCN-Daily). Years with too many missing days are left out.