When to Plant in Modesto, CA

In Modesto, the gardening timeline is defined by a median last spring frost on February 13 and a median first fall frost on November 30, granting this area an impressive total of 291 frost-free days. With this extended growing season, gardeners can cultivate a wide array of both warm-season and cool-season crops, maximizing their harvests throughout the year.

The Mediterranean (mild, dry summers) microclimate of Modesto allows for excellent growth of crops such as tomatoes, peppers, and eggplants, which thrive in the warm, sunny conditions. Conversely, more delicate crops like lettuce and spinach can struggle during the peak summer heat, as they tend to bolt under prolonged warm temperatures and need cooler conditions to flourish.

What to plant now in Modesto

Spring (mid-March to late April) is ideal for planting tomatoes and peppers after the last frost on February 13. Starting indoors in early March, then transplanting outside helps ensure a bountiful harvest.
Summer (May to June) invites the planting of heat-loving crops such as okra and cucumbers. With frost dates behind, these can be directly sown once the soil has warmed sufficiently.
Fall (August to September) is perfect for sowing cool-season crops like spinach and kale. Plant before the first frost on November 30 to ensure they establish before the colder months.
Winter (November) is the time to prepare your garden by mulching and planning for the next season. Dividing perennials and planting cover crops can enhance soil health throughout the winter months.

In Modesto (290 frost-free days, a very long season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Modesto

Month	What to do
January	In January, plan and prepare your garden layout. This is a great time for ordering seeds and starting a few hardy seedlings indoors, as outdoor work is limited in the cold.
February	As February begins, start hardy plants indoors. Note the significant frost date of February 13 for transplants. After this date, you may begin transitioning certain crops outdoors.
March	March is prime time for sowing cool-season crops outside. As you approach the end of the month, ensure that seedlings like tomatoes are started indoors and ready for transplant.
April	In April, transplant frost-sensitive crops outdoors as the danger of frost subsides after February 13. This is also when summer crops like melons should be sown directly.
May	May brings warmer temperatures, ideal for warm-season crops. Begin planting okra and cucumbers, ensuring they are watered well to establish quickly in the warming soil.
June	June's heat supports the growth of vigorous crops. Continue to monitor water levels, particularly for fruiting plants like eggplants and peppers which thrive during this month.
July	In July, the temperature peaks. Maintain consistent watering and apply mulch to cool the soil, while also considering shade for plants like lettuce and spinach.
August	August is the month to start planting cool-season crops for fall harvest. With temperatures still high, prepare your soil by adding compost to support kale and broccoli.
September	By September, continue to sow cool-season crops. Monitor daily temperatures, as fall is approaching, and start preparing for protection against potential frost.
October	October is when you should be harvesting late summer crops. Protect autumn seedlings as nights grow cooler, keeping an eye on the frost forecast as December approaches.
November	In November, prepare your garden for winter. Cover any remaining plants with frost cloth as temperatures drop and ensure soil is covered with mulch to retain warmth.
December	December signifies the end of the growing season. Focus on cleaning your garden beds, supporting dormant plants, and planning strategically for next year’s crops while looking out for the first frost on November 30.

Frost dates for Modesto ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
95355	February 13	November 30	9b

FAQ

When is the last frost in Modesto?

The last frost in Modesto typically occurs on February 13, making this a crucial date for gardeners to begin outdoor planting.

What vegetables grow best in Modesto?

Vegetables such as tomatoes, peppers, and eggplants thrive well in Modesto's favorable climate, while crops like lettuce may bolt in the heat.

When should I plant tomatoes in Modesto?

Tomatoes should be planted after the last frost date of February 13 or started indoors a few weeks prior.

Can I garden year-round in Modesto?

Yes, Modesto's Mediterranean climate allows for year-round gardening with careful selection of crops suited to heat and seasonal changes.

How does Plan My Garden help Modesto gardeners?

Plan My Garden provides tailored advice and tools to help Modesto gardeners plan their seasonal planting, maximize their harvests, and understand local climate conditions.