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When to plant in Avocado Heights, CA

USDA Zone 10b

Everything below — frost dates, hardiness zone, and what to plant when in Avocado Heights, California — is derived from the closest NOAA station with complete climate normals.

Avocado Heights's growing season is short at roughly -2 days, so succession planting is limited; lean on transplants over direct sowing for anything slow to mature. In zone 10b, frost is a minor factor for Avocado Heights — most perennials thrive, and annual vegetables can go out early and stay late.

Station · SAN GABRIEL FIRE DEPT · 10.7 km
Last spring frost
January 4
50% chance · 32°F
First fall frost
January 2
50% chance · 32°F
Growing season
-2 days
frost-free
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Frost calendar for Avocado HeightsA year-band from January to December for Avocado Heights: Avocado Heights is effectively frost-free at 32°F — no distinct frost season.
Avocado Heights is effectively frost-free at 32°F — no distinct frost season.

Frost probability

SAN GABRIEL FIRE DEPT · 1991–2020

The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Avocado Heights’s own odds, recorded at SAN GABRIEL FIRE DEPT.

Frost-probability curves for Avocado HeightsProbability of the last spring frost and first fall frost by date at 32°F. The last spring frost is most likely around January 4 and the first fall frost around January 2, where a 32°F freeze is rare enough that there is effectively no distinct frost season.
Last spring frostFirst fall frostbold = 32°F · thin = 28°F / 36°F · dot = 50% date · band = 10–90% window
ThresholdSPRING 10%SPRING 50%SPRING 90%FALL 10%FALL 50%FALL 90%
36°FFeb 20Jan 17Dec 20Dec 6Dec 26Jan 30
32°FJan 28Jan 4Dec 19Dec 18Jan 2Jan 26

Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.

What to plant now

TODAY · JULY 19

Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.

Add the next planting windows to your calendar (.ics) ↓

Full-year planting calendar

Start indoorsTransplantDirect sowFall sow

Each bar is the exact window to take a planting action in Avocado Heights, drawn to the day from the local frost dates. The dashed line is today.

Nearby weather stations

3 within 22 km · complete 32°F normals

When stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.

SAN GABRIEL FIRE DEPT
Primary
11 km · 111 m elevation
SPRING
Jan 4
FALL
Jan 2
PASADENA
18 km · 263 m elevation
SPRING
Jan 8
FALL
Jan 7
POMONA/FAIRPLEX
22 km · 305 m elevation
SPRING
Jan 8
FALL
Dec 28

Avocado Heights planting FAQ

When is the last spring frost in Avocado Heights, CA?

On average, the last spring frost in Avocado Heights is around January 4 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.

When is the first fall frost in Avocado Heights, CA?

The first fall frost in Avocado Heights typically arrives around January 2 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.

What hardiness zone is Avocado Heights in?

Avocado Heights is in USDA hardiness zone 10b. In zone 10b, winters are mild — many tender perennials overwinter here.

How long is the growing season in Avocado Heights?

Avocado Heights has about -2 frost-free days — a short growing season — between the average last spring frost (January 4) and first fall frost (January 2).

When should I plant tomatoes in Avocado Heights?

For Avocado Heights, sow tomatoes indoors about November 9–November 23 and move the seedlings out around January 11, after the last spring frost.

Planting reminders

Never miss a window in Avocado Heights

An email when it’s time to start seeds, transplant, and sow — timed to Avocado Heights’s frost dates. Double opt-in, one-click unsubscribe, no spam.

Nearby cities

8 within reach

Frost dates recorded at SAN GABRIEL FIRE DEPT, 11 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.

Cite this page
BlissGarden. "When to Plant in Avocado Heights, CA — Frost Dates & Zone 10b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00047785. Retrieved from https://blissgarden.com/california/avocado-heights.
When to Plant in Avocado Heights, CA — Frost Dates & Zone 10b — BlissGarden