When to plant Lettuce in Marin County, California, United States

Lettuce can be planted after March 27, when air temperature is consistently in a range between 32°F and 75°F and soil temperature is above 45°F.

Growing Lettuce in Marin County

Lettuce needs on average between 30 and 70 days to mature and produce harvest.

Marin County has 2 distinct seasons suitable for growing Lettuce

• March 27 to August 14

  Lettuce needs on average between 30 and 70 days to mature and produce harvest. With 141 suitable for growht, you can expect good harvest without too much effort if all planting activities are done in timely manner.

• September 09 to November 21

  Lettuce needs on average between 30 and 70 days to mature and produce harvest. With 74 suitable for growht, you can expect good harvest without too much effort if all planting activities are done in timely manner.

Planting Lettuce in Marin County before March 27 without any additional protection is not advised because cold streaks can damage or kill off young plant.

Growing season extention

In order to maximize chances for a good harvest of Lettuce in Marin County, some extra steps can be taken to extend growing season.

Start seeds indoors

When starting seeds indoors, it is possible to guarantee best possible conditions for young seedlings. Consistent temperature range, adequate watering and ample light (natural, supplemented with artifitial grow lights) will ensure you have strong and healthy seedlings just in time for transplanting into soil.

It takes 20 days on average for Lettuce to sprout, and grow big enough to be ready for transplanting.

Marin County has 3 distinct seasons for growing Lettuce

• In order to get plants ready for March 27 seeds should be started indoors bwetween March 07 and June 05

  Seeds started after June 05 are not likely to mature and produce harvest.

  Lettuce needs on average between 30 and 70 days to mature and produce harvest. With 141 suitable for growth, you can expect good harvest without too much effort if all planting activities are done in timely manner.

• In order to get plants ready for August 17 seeds should be started indoors bwetween July 28 and August 08

  Seeds started after August 08 are not likely to mature and produce harvest.

  This Lettuce growing season in Marin County is quite short, with only 22 days suitable for growth so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.

• In order to get plants ready for September 09 seeds should be started indoors bwetween August 20 and September 12

  Seeds started after September 12 are not likely to mature and produce harvest.

  Lettuce needs on average between 30 and 70 days to mature and produce harvest. With 74 suitable for growth, you can expect good harvest without too much effort if all planting activities are done in timely manner.

Use a cold frame

When using a cold frame in a beggining of growing season You can protect young plants from possible temperature drops, this way growing season can start up to 2 weeks earlier.

Use an additional shading

On days, when air temperatures are expected to raise above 75°F, which is in top of tolerable range for Lettuce, consider using additional shading to prevent heat shock.

Table with days suitable to grow vegetables in Marin County, California