Canby 3 SW, CA Frost Dates & Growing Season

The two dates every Canby 3 SW garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Jun 1
~50% chance of frost after
First fall frost
Sep 16
~50% chance of frost before
Growing season
107 days
frost-free stretch
USDA zone
≈ 6b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost May 13 Jun 1 Jun 20
First fall frost Sep 29 Sep 16 Sep 1
Hard freeze (28°F), median last May 12 · first Sep 28

Computed from NOAA 1991–2020 climate normals at the CANBY 3 SW station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Canby 3 SW

Computed from Canby 3 SW's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Apr 6 – Apr 20 Jun 8 – Jun 15
🫑 Peppers Mar 23 – Apr 6 Jun 15 – Jun 22
🥬 Lettuce Apr 20 – May 4 May 4 – May 18 May 4 – Jun 1
🫛 Peas Apr 20 – May 4
🥕 Carrots May 11 – Jun 1
🥦 Broccoli Apr 13 – Apr 27 May 11 – May 25
🥬 Kale Apr 20 – May 4 May 4 – May 18 May 4 – May 18
🥒 Cucumbers May 4 – May 11 Jun 8 – Jun 15 Jun 8 – Jun 15
🥒 Zucchini May 4 – May 11 Jun 8 – Jun 15 Jun 8 – Jun 15
🫘 Green Beans (Bush) Jun 8 – Jun 15
🌽 Sweet Corn Jun 8 – Jun 15
🌿 Basil Apr 20 – May 4 Jun 8 – Jun 15 Jun 15 – Jun 22
🧄 Garlic Fall: Aug 5 – Sep 2

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Canby 3 SW's dates automatically after a lookup.

Reading the season in Canby 3 SW

At about 107 frost-free days, Canby 3 SW rewards efficiency: start warm-season crops indoors, favor short-season varieties, and lean on cold-tolerant crops — peas, kale, roots — that shrug off the shoulder-season frosts on either end.

Frequently asked questions

When is the last frost in Canby 3 SW, CA?

The average last spring frost in Canby 3 SW is around Jun 1, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Canby 3 SW, CA?

The average first fall frost in Canby 3 SW arrives around Sep 16. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Canby 3 SW?

About 107 frost-free days on average, from Jun 1 to Sep 16. That favors short-season varieties and transplants for warm-season crops, with cool-season vegetables doing the heavy lifting in spring and fall.

What USDA zone is Canby 3 SW in?

USDA zone 6b on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.