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California Vegetable Planting Calendar
The California vegetable planting calendar below lists spring and fall planting dates for 47 crops from UC Master Gardener Program. The calendar has separate dates for four regions, North and North Coast, South Coast, Interior Valleys and Desert Valleys; each county uses its assigned region.
Photo: Rainbow chard growing beside orange marigolds in a raised garden bed. Missvain, CC BY 4.0, via Wikimedia Commons
Planting calendar for your California county
Dates for the picked county. Shifted or frost-relative dates are worked out from the county’s NOAA 50% frost dates as the publication describes.

Mount Shasta above conifers and patches of spring snow at Bunny Flat
The California calendar as published
| Crop | Season | How | Region | Published dates | Publication |
|---|---|---|---|---|---|
| Artichoke | fall | transplant | Desert Valleys | Sept | California Master Gardener Handbook Table 13.2 |
| Artichoke | summer | transplant | Interior Valleys | July | California Master Gardener Handbook Table 13.2 |
| Artichoke | summer | transplant | North & North Coast | Aug–Dec | California Master Gardener Handbook Table 13.2 |
| Artichoke | spring | transplant | South Coast | May–July | California Master Gardener Handbook Table 13.2 |
| Asparagus | winter | crowns | Desert Valleys | Feb–Apr | Publication 3338 |
| Asparagus | winter | crowns | Interior Valleys | Jan–Feb | Publication 3338 |
| Asparagus | winter | crowns | North & North Coast | Jan–Mar | Publication 3338 |
| Asparagus | winter | crowns | South Coast | Jan–Feb | Publication 3338 |
| Beans, lima | all year | seed | Desert Valleys | — | Publication 3338 |
| Beans, lima | spring | seed | Interior Valleys | May–Jun | Publication 3338 |
| Beans, lima | spring | seed | North & North Coast | May–Jun | Publication 3338 |
| Beans, lima | spring | seed | South Coast | May–Jun | Publication 3338 |
| Beans, snap | summer | seed | Desert Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Beans, snap | winter | seed | Desert Valleys | Jan–March | California Master Gardener Handbook Table 13.2 |
| Beans, snap | spring | seed | Interior Valleys | April–May | California Master Gardener Handbook Table 13.2 |
| Beans, snap | summer | seed | Interior Valleys | July–Aug | California Master Gardener Handbook Table 13.2 |
| Beans, snap | spring | seed | North & North Coast | May–June | California Master Gardener Handbook Table 13.2 |
| Beans, snap | summer | seed | North & North Coast | July | California Master Gardener Handbook Table 13.2 |
| Beans, snap | spring | seed | South Coast | March–Aug | California Master Gardener Handbook Table 13.2 |
| Beets | fall | seed | Desert Valleys | Sept-Jan | California Master Gardener Handbook Table 13.2 |
| Beets | summer | seed | Interior Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Beets | winter | seed | Interior Valleys | Feb–April | California Master Gardener Handbook Table 13.2 |
| Beets | winter | seed | North & North Coast | Feb–Aug | California Master Gardener Handbook Table 13.2 |
| Beets | winter | seed | South Coast | Jan–Sept | California Master Gardener Handbook Table 13.2 |
| Broccoli | fall | transplant | Desert Valleys | Sept | California Master Gardener Handbook Table 13.2 |
| Broccoli | summer | transplant | Interior Valleys | July | California Master Gardener Handbook Table 13.2 |
| Broccoli | winter | transplant | Interior Valleys | Dec to Feb | California Master Gardener Handbook Table 13.2 |
| Broccoli | summer | transplant | North & North Coast | July-Sept | California Master Gardener Handbook Table 13.2 |
| Broccoli | winter | transplant | North & North Coast | Feb-April | California Master Gardener Handbook Table 13.2 |
| Broccoli | summer | transplant | South Coast | June-July | California Master Gardener Handbook Table 13.2 |
| Broccoli | winter | transplant | South Coast | Jan-Feb | California Master Gardener Handbook Table 13.2 |
| Brussels sprouts | all year | transplant | Desert Valleys | — | Publication 3338 |
| Brussels sprouts | all year | transplant | Interior Valleys | — | Publication 3338 |
| Brussels sprouts | winter | transplant | North & North Coast | Feb–May | Publication 3338 |
| Brussels sprouts | summer | transplant | South Coast | Jun–Jul | Publication 3338 |
| Cabbage | fall | transplant | Desert Valleys | Sept-Nov | California Master Gardener Handbook Table 13.2 |
| Cabbage | summer | transplant | Interior Valleys | July | California Master Gardener Handbook Table 13.2 |
| Cabbage | winter | transplant | Interior Valleys | Feb | California Master Gardener Handbook Table 13.2 |
| Cabbage | summer | transplant | North & North Coast | July-Sept | California Master Gardener Handbook Table 13.2 |
| Cabbage | winter | transplant | North & North Coast | Jan-April | California Master Gardener Handbook Table 13.2 |
| Cabbage | summer | transplant | South Coast | Aug-Feb | California Master Gardener Handbook Table 13.2 |
| Cabbage, Chinese | summer | seed | Desert Valleys | Aug–Nov | Publication 3338 |
| Cabbage, Chinese | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Cabbage, Chinese | summer | seed | North & North Coast | Jul–Sep | Publication 3338 |
| Cabbage, Chinese | summer | seed | South Coast | Aug–Oct | Publication 3338 |
| Cantaloupes and other melons | winter | seed | Desert Valleys | Jan-April | California Master Gardener Handbook Table 13.2 |
| Cantaloupes and other melons | spring | seed | Interior Valleys | April-June | California Master Gardener Handbook Table 13.2 |
| Cantaloupes and other melons | spring | seed | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Cantaloupes and other melons | spring | seed | South Coast | April-May | California Master Gardener Handbook Table 13.2 |
| Carrots | fall | seed | Desert Valleys | Sept-Dec | California Master Gardener Handbook Table 13.2 |
| Carrots | summer | seed | Interior Valleys | Aug-Sept | California Master Gardener Handbook Table 13.2 |
| Carrots | winter | seed | Interior Valleys | Feb-April | California Master Gardener Handbook Table 13.2 |
| Carrots | summer | seed | North & North Coast | July-Aug | California Master Gardener Handbook Table 13.2 |
| Carrots | winter | seed | North & North Coast | Jan-May | California Master Gardener Handbook Table 13.2 |
| Carrots | winter | seed | South Coast | Jan-Sept | California Master Gardener Handbook Table 13.2 |
| Cauliflower | summer | transplant | Desert Valleys | Aug-Sept | California Master Gardener Handbook Table 13.2 |
| Cauliflower | summer | transplant | Interior Valleys | July-Aug | California Master Gardener Handbook Table 13.2 |
| Cauliflower | summer | transplant | North & North Coast | June-July | California Master Gardener Handbook Table 13.2 |
| Cauliflower | winter | transplant | North & North Coast | Jan-Feb | California Master Gardener Handbook Table 13.2 |
| Cauliflower | summer | transplant | South Coast | July-Oct | California Master Gardener Handbook Table 13.2 |
| Cauliflower | winter | transplant | South Coast | Feb | California Master Gardener Handbook Table 13.2 |
| Celeriac | all year | seed | Desert Valleys | — | Publication 3338 |
| Celeriac | summer | seed | Interior Valleys | Jun–Aug | Publication 3338 |
| Celeriac | spring | seed | North & North Coast | Mar–Jun | Publication 3338 |
| Celeriac | spring | seed | South Coast | Mar–Aug | Publication 3338 |
| Celery | all year | transplant | Desert Valleys | — | California Master Gardener Handbook Table 13.2 |
| Celery | summer | transplant | Interior Valleys | June-Aug | California Master Gardener Handbook Table 13.2 |
| Celery | spring | transplant | North & North Coast | March-June | California Master Gardener Handbook Table 13.2 |
| Celery | spring | transplant | South Coast | April-Aug | California Master Gardener Handbook Table 13.2 |
| Chard | fall | seed | Desert Valleys | Sep–Oct | Publication 3338 |
| Chard | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Chard | winter | seed | Interior Valleys | Feb | Publication 3338 |
| Chard | summer | seed | North & North Coast | Aug | Publication 3338 |
| Chard | winter | seed | North & North Coast | Feb–May | Publication 3338 |
| Chard | winter | seed | South Coast | Feb–May | Publication 3338 |
| Chayote | all year | seed | Desert Valleys | — | California Master Gardener Handbook Table 13.2 |
| Chayote | spring | seed | Interior Valleys | May-June | California Master Gardener Handbook Table 13.2 |
| Chayote | all year | seed | North & North Coast | — | California Master Gardener Handbook Table 13.2 |
| Chayote | spring | seed | South Coast | April-May | California Master Gardener Handbook Table 13.2 |
| Chives | fall | seed | Desert Valleys | Sep–Feb | Publication 3338 |
| Chives | winter | seed | Interior Valleys | Feb–Mar | Publication 3338 |
| Chives | spring | seed | North & North Coast | Apr | Publication 3338 |
| Chives | winter | seed | South Coast | Feb–Apr | Publication 3338 |
| Corn, sweet | winter | seed | Desert Valleys | Feb-March | California Master Gardener Handbook Table 13.2 |
| Corn, sweet | spring | seed | Interior Valleys | March-July | California Master Gardener Handbook Table 13.2 |
| Corn, sweet | summer | seed | Interior Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Corn, sweet | spring | seed | North & North Coast | May-July | California Master Gardener Handbook Table 13.2 |
| Corn, sweet | spring | seed | South Coast | March-July | California Master Gardener Handbook Table 13.2 |
| Cucumbers | summer | seed | Desert Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Cucumbers | winter | seed | Desert Valleys | Feb-May | California Master Gardener Handbook Table 13.2 |
| Cucumbers | spring | seed | Interior Valleys | April-July | California Master Gardener Handbook Table 13.2 |
| Cucumbers | spring | seed | North & North Coast | April-June | California Master Gardener Handbook Table 13.2 |
| Cucumbers | spring | seed | South Coast | April-Jun | California Master Gardener Handbook Table 13.2 |
| Eggplant | winter | transplant | Desert Valleys | Feb-April | California Master Gardener Handbook Table 13.2 |
| Eggplant | spring | transplant | Interior Valleys | April-May | California Master Gardener Handbook Table 13.2 |
| Eggplant | spring | transplant | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Eggplant | spring | transplant | South Coast | April-May | California Master Gardener Handbook Table 13.2 |
| Endive | fall | seed | Desert Valleys | Sep–Dec | Publication 3338 |
| Endive | spring | seed | Interior Valleys | Apr | Publication 3338 |
| Endive | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Endive | winter | seed | Interior Valleys | Jan | Publication 3338 |
| Endive | spring | seed | North & North Coast | Mar–Jul | Publication 3338 |
| Endive | winter | seed | South Coast | Dec–Aug | Publication 3338 |
| Florence fennel | fall | seed | Desert Valleys | Sep–Nov | Publication 3338 |
| Florence fennel | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Florence fennel | spring | seed | North & North Coast | Mar–Jul | Publication 3338 |
| Florence fennel | winter | seed | South Coast | Feb–Jul | Publication 3338 |
| Garlic | fall | cloves | Desert Valleys | Sept-Nov | California Master Gardener Handbook Table 13.2 |
| Garlic | fall | cloves | Interior Valleys | Oct–Dec | California Master Gardener Handbook Table 13.2 |
| Garlic | fall | cloves | North & North Coast | Oct–Dec | California Master Gardener Handbook Table 13.2 |
| Garlic | fall | cloves | South Coast | Oct–Dec | California Master Gardener Handbook Table 13.2 |
| Kale | fall | seed | Desert Valleys | Sept–Nov | California Master Gardener Handbook Table 13.2 |
| Kale | summer | seed | Interior Valleys | Aug–Sept | California Master Gardener Handbook Table 13.2 |
| Kale | winter | seed | North & North Coast | Feb–April | California Master Gardener Handbook Table 13.2 |
| Kale | summer | seed | South Coast | Aug–Oct | California Master Gardener Handbook Table 13.2 |
| Kohlrabi | fall | seed | Desert Valleys | Oct–Nov | California Master Gardener Handbook Table 13.2 |
| Kohlrabi | summer | seed | Interior Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Kohlrabi | summer | seed | North & North Coast | July–Aug | California Master Gardener Handbook Table 13.2 |
| Kohlrabi | summer | seed | South Coast | Aug–Sept | California Master Gardener Handbook Table 13.2 |
| Kohlrabi | winter | seed | South Coast | Jan | California Master Gardener Handbook Table 13.2 |
| Leeks | all year | seed | Desert Valleys | — | Publication 3338 |
| Leeks | winter | seed | Interior Valleys | Jan–Apr | Publication 3338 |
| Leeks | winter | seed | North & North Coast | Feb–Apr | Publication 3338 |
| Leeks | winter | seed | South Coast | Jan–Apr | Publication 3338 |
| Lettuce | fall | seed | Desert Valleys | Sept-Dec | California Master Gardener Handbook Table 13.2 |
| Lettuce | fall | seed | Interior Valleys | Nov–March | California Master Gardener Handbook Table 13.2 |
| Lettuce | summer | seed | Interior Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Lettuce | winter | seed | North & North Coast | Feb–Aug | California Master Gardener Handbook Table 13.2 |
| Lettuce | summer | seed | South Coast | Aug–April | California Master Gardener Handbook Table 13.2 |
| Mustard | fall | seed | Desert Valleys | Oct–Dec | Publication 3338 |
| Mustard | spring | seed | Interior Valleys | Apr | Publication 3338 |
| Mustard | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Mustard | spring | seed | North & North Coast | Apr | Publication 3338 |
| Mustard | summer | seed | North & North Coast | Jul–Aug | Publication 3338 |
| Mustard | summer | seed | South Coast | Aug–Feb | Publication 3338 |
| Okra | spring | seed | Desert Valleys | May | California Master Gardener Handbook Table 13.2 |
| Okra | spring | seed | Interior Valleys | May | California Master Gardener Handbook Table 13.2 |
| Okra | spring | seed | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Okra | spring | seed | South Coast | April-May | California Master Gardener Handbook Table 13.2 |
| Onions, bulb | fall | seed | Desert Valleys | Oct-Nov | California Master Gardener Handbook Table 13.2 |
| Onions, bulb | fall | seed | Interior Valleys | Oct-Nov | California Master Gardener Handbook Table 13.2 |
| Onions, bulb | winter | seed | Interior Valleys | Jan-March | California Master Gardener Handbook Table 13.2 |
| Onions, bulb | fall | seed | North & North Coast | Nov-Jan | California Master Gardener Handbook Table 13.2 |
| Onions, bulb | winter | seed | North & North Coast | Jan-March | California Master Gardener Handbook Table 13.2 |
| Onions, bulb | winter | seed | South Coast | Feb-Oct | California Master Gardener Handbook Table 13.2 |
| Onions, green | fall | transplant | Desert Valleys | Sept-Jan | California Master Gardener Handbook Table 13.2 |
| Onions, green | summer | transplant | Interior Valleys | Aug-Dec | California Master Gardener Handbook Table 13.2 |
| Onions, green | spring | transplant | North & North Coast | April-July | California Master Gardener Handbook Table 13.2 |
| Onions, green | all year | transplant | South Coast | all year | California Master Gardener Handbook Table 13.2 |
| Parsley | fall | seed | Desert Valleys | Sep–Oct | California Master Gardener Handbook Table 13.2 |
| Parsley | winter | seed | Interior Valleys | Dec–May | California Master Gardener Handbook Table 13.2 |
| Parsley | winter | seed | North & North Coast | Dec–May | California Master Gardener Handbook Table 13.2 |
| Parsley | winter | seed | South Coast | Dec–May | California Master Gardener Handbook Table 13.2 |
| Parsnips | fall | seed | Desert Valleys | Sep–Oct | California Master Gardener Handbook Table 13.2 |
| Parsnips | spring | seed | Interior Valleys | May–Jul | California Master Gardener Handbook Table 13.2 |
| Parsnips | spring | seed | North & North Coast | May–Jun | California Master Gardener Handbook Table 13.2 |
| Parsnips | spring | seed | South Coast | Mar–Jul | California Master Gardener Handbook Table 13.2 |
| Peas | fall | seed | Desert Valleys | Sep–Oct | Publication 3338 |
| Peas | fall | seed | Interior Valleys | Sep–Jan | Publication 3338 |
| Peas | winter | seed | Interior Valleys | Jan–Feb | Publication 3338 |
| Peas | fall | seed | North & North Coast | Sep–Oct | Publication 3338 |
| Peas | winter | seed | North & North Coast | Jan–Apr | Publication 3338 |
| Peas | summer | seed | South Coast | Aug | Publication 3338 |
| Peas | winter | seed | South Coast | Dec–Mar | Publication 3338 |
| Peppers | spring | transplant | Desert Valleys | March | California Master Gardener Handbook Table 13.2 |
| Peppers | spring | transplant | Interior Valleys | May | California Master Gardener Handbook Table 13.2 |
| Peppers | spring | transplant | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Peppers | spring | transplant | South Coast | April-May | California Master Gardener Handbook Table 13.2 |
| Potatoes, sweet | winter | slips | Desert Valleys | Feb–Jun | California Master Gardener Handbook Table 13.2 |
| Potatoes, sweet | spring | slips | Interior Valleys | Apr–Jun | California Master Gardener Handbook Table 13.2 |
| Potatoes, sweet | spring | slips | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Potatoes, sweet | spring | slips | South Coast | Apr–May | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | winter | seed pieces or tubers | Desert Valleys | Dec–Feb | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | summer | seed pieces or tubers | Interior Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | winter | seed pieces or tubers | Interior Valleys | Feb–Mar | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | spring | seed pieces or tubers | North & North Coast | late-April-May | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | winter | seed pieces or tubers | North & North Coast | early-Feb | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | summer | seed pieces or tubers | South Coast | Jun–Aug | California Master Gardener Handbook Table 13.2 |
| Potatoes, white | winter | seed pieces or tubers | South Coast | Feb–May | California Master Gardener Handbook Table 13.2 |
| Pumpkins | spring | seed | Desert Valleys | March-June | California Master Gardener Handbook Table 13.2 |
| Pumpkins | spring | seed | Interior Valleys | April-June | California Master Gardener Handbook Table 13.2 |
| Pumpkins | spring | seed | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Pumpkins | spring | seed | South Coast | May-June | California Master Gardener Handbook Table 13.2 |
| Radish | fall | seed | Desert Valleys | Oct–Mar | Publication 3338 |
| Radish | fall | seed | Interior Valleys | Sep–Apr | Publication 3338 |
| Radish | all year | seed | North & North Coast | All year | Publication 3338 |
| Radish | all year | seed | South Coast | All year | Publication 3338 |
| Rhubarb | all year | crowns | Desert Valleys | — | California Master Gardener Handbook Table 13.2 |
| Rhubarb | winter | crowns | Interior Valleys | Dec-Feb | California Master Gardener Handbook Table 13.2 |
| Rhubarb | winter | crowns | North & North Coast | Dec-March | California Master Gardener Handbook Table 13.2 |
| Rhubarb | winter | crowns | South Coast | Dec-Jan | California Master Gardener Handbook Table 13.2 |
| Rutabaga | fall | seed | Desert Valleys | Oct–Dec | Publication 3338 |
| Rutabaga | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Rutabaga | spring | seed | North & North Coast | Mar–Apr | Publication 3338 |
| Rutabaga | summer | seed | North & North Coast | Jul | Publication 3338 |
| Rutabaga | summer | seed | South Coast | Jul–Sep | Publication 3338 |
| Rutabaga | summer | seed | South Coast | Aug–Mar | Publication 3338 |
| Spinach | fall | seed | Desert Valleys | Sept–Nov | California Master Gardener Handbook Table 13.2 |
| Spinach | fall | seed | Interior Valleys | Sept–Jan | California Master Gardener Handbook Table 13.2 |
| Spinach | summer | seed | North & North Coast | Aug–Feb | California Master Gardener Handbook Table 13.2 |
| Spinach | summer | seed | South Coast | Aug-March | California Master Gardener Handbook Table 13.2 |
| Squash, summer | summer | seed | Desert Valleys | Aug–Sep | California Master Gardener Handbook Table 13.2 |
| Squash, summer | winter | seed | Desert Valleys | Feb–Mar | California Master Gardener Handbook Table 13.2 |
| Squash, summer | spring | seed | Interior Valleys | April–July | California Master Gardener Handbook Table 13.2 |
| Squash, summer | spring | seed | North & North Coast | May–July | California Master Gardener Handbook Table 13.2 |
| Squash, summer | spring | seed | South Coast | April–June | California Master Gardener Handbook Table 13.2 |
| Squash, winter | summer | seed | Desert Valleys | Aug | California Master Gardener Handbook Table 13.2 |
| Squash, winter | winter | seed | Desert Valleys | Feb-March | California Master Gardener Handbook Table 13.2 |
| Squash, winter | spring | seed | Interior Valleys | April-June | California Master Gardener Handbook Table 13.2 |
| Squash, winter | spring | seed | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Squash, winter | spring | seed | South Coast | April-June | California Master Gardener Handbook Table 13.2 |
| Tomatoes | winter | transplant | Desert Valleys | Dec-March | California Master Gardener Handbook Table 13.2 |
| Tomatoes | spring | transplant | Interior Valleys | April-May | California Master Gardener Handbook Table 13.2 |
| Tomatoes | spring | transplant | North & North Coast | May | California Master Gardener Handbook Table 13.2 |
| Tomatoes | spring | transplant | South Coast | April-July 15 | California Master Gardener Handbook Table 13.2 |
| Turnips | fall | seed | Desert Valleys | Oct–Feb | Publication 3338 |
| Turnips | summer | seed | Interior Valleys | Aug | Publication 3338 |
| Turnips | winter | seed | Interior Valleys | Feb | Publication 3338 |
| Turnips | summer | seed | North & North Coast | Aug | Publication 3338 |
| Turnips | winter | seed | North & North Coast | Jan | Publication 3338 |
| Turnips | summer | seed | South Coast | Aug–Oct | Publication 3338 |
| Turnips | winter | seed | South Coast | Jan | Publication 3338 |
| Watermelons | winter | seed | Desert Valleys | Jan-March | California Master Gardener Handbook Table 13.2 |
| Watermelons | spring | seed | Interior Valleys | April-June | California Master Gardener Handbook Table 13.2 |
| Watermelons | spring | seed | North & North Coast | May-June | California Master Gardener Handbook Table 13.2 |
| Watermelons | spring | seed | South Coast | April-June | California Master Gardener Handbook Table 13.2 |
Published text is quoted from each publication. Region names are the publication’s own.
When to plant in California: crop by crop
Planting dates for each crop in California, from the UC Master Gardener Program calendar.
California planting calendar questions
When should I plant my garden in California?
The California vegetable planting calendar below lists spring and fall planting dates for 47 crops from UC Master Gardener Program. The calendar has separate dates for four regions, North and North Coast, South Coast, Interior Valleys and Desert Valleys; each county uses its assigned region.
What is the difference between spring and fall planting?
Spring windows follow the last frost. Fall windows are counted back from the first fall frost so cool-season crops mature before hard freezes.
Why are some dates "weeks before" or "weeks after" frost?
Some extension guides give dates relative to the average frost date. This site works those out for each county from its NOAA 50% frost date.
Which extension publications does this California calendar use?
California Master Gardener Handbook Table 13.2 Time of planting (UC Master Gardener Program statewide page; table 'Recommended planting dates', source: California Master Gardener Handbook, Table 13.2); Publication 3338 California Master Gardener Handbook, Table 14.2 "Vegetable gardening at a glance: How to plant and store".
Can I plant outside these windows?
The windows are recommendations. Planting outside them raises the risk of frost damage, heat stress or poor germination.
How do I find my county's frost dates?
See the California frost dates page or your county page.

Sources
- California Master Gardener Handbook Table 13.2, Time of planting (UC Master Gardener Program statewide page; table 'Recommended planting dates', source: California Master Gardener Handbook, Table 13.2) (UC Master Gardener Program, University of California Agriculture and Natural Resources). Publication file.
- Publication 3338, California Master Gardener Handbook, Table 14.2 "Vegetable gardening at a glance: How to plant and store" (University of California, Division of Agriculture and Natural Resources). 2002 (Dennis R. Pittenger, editor; pages 351-352). Publication file.
Photos: Rainbow chard growing beside orange marigolds in a raised garden bed: Missvain, CC BY 4.0, via Wikimedia Commons; North face of Mount Shasta in golden evening light: Frank Schulenburg, CC BY-SA 4.0, via Wikimedia Commons; Mount Shasta above conifers and patches of spring snow at Bunny Flat: Frank Schulenburg, CC BY-SA 4.0, via Wikimedia Commons; Ripe red tomatoes on the vine: Softeis, CC BY-SA 3.0, via Wikimedia Commons; Pepper plant in a kitchen garden loaded with green, yellow and red peppers: NPS, Public domain, via Wikimedia Commons; Potato plants growing in a home garden: Geo Lightspeed7, CC BY-SA 4.0, via Wikimedia Commons; Rows of sweet corn in a field: Wee Hong, CC BY-SA 4.0, via Wikimedia Commons; Clusters of long green bean pods hanging from a climbing bean vine: Nirajan_pant, CC BY-SA 3.0, via Wikimedia Commons; Cucumber vines climbing a wooden trellis in a kitchen garden: NPS, Public domain, via Wikimedia Commons; Harvested zucchini and summer squash: nociveglia from Appennino Emiliano, Italy, CC BY 2.0, via Wikimedia Commons; Green and red leaf lettuce heads growing along drip lines in a garden bed: Forest and Kim Starr, CC BY 3.0 US, via Wikimedia Commons; Long rows of green onion plants growing in sandy farm soil: ליזי שאנן, CC BY 2.5, via Wikimedia Commons; Neat rows of young garlic shoots growing in dark tilled soil: Timothy A. Gonsalves, CC BY-SA 4.0, via Wikimedia Commons; Pea vines on a garden trellis with white flowers and flat green pods: Forest and Kim Starr, CC BY 2.0, via Wikimedia Commons; Young watermelon plant in a garden: Forest and Kim Starr, CC BY 3.0 us, via Wikimedia Commons.











