When to plant Lettuce in San Luis Obispo County, California, United States

Lettuce can be planted after March 10, when air temperature is consistently in a range between 32°F and 75°F and soil temperature is above 45°F.

Growing Lettuce in San Luis Obispo County

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

San Luis Obispo County has 2 distinct seasons suitable for growing Lettuce

• March 10 to June 01

  Lettuce needs on average between 30 and 70 days to mature and produce harvest. With 84 suitable for growht, you can expect good harvest without too much effort if all planting activities are done in timely manner.

• October 22 to December 14

  This Lettuce growing season in San Luis Obispo County is quite short, with only 54 days suitable for growth so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.

Planting Lettuce in San Luis Obispo County before March 10 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 San Luis Obispo 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.

San Luis Obispo County has 2 distinct seasons for growing Lettuce

• In order to get plants ready for March 10 seeds should be started indoors bwetween February 18 and March 23

  Seeds started after March 23 are not likely to mature and produce harvest.

  Lettuce needs on average between 30 and 70 days to mature and produce harvest. With 84 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 October 22 seeds should be started indoors bwetween October 02 and October 05

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

  This Lettuce growing season in San Luis Obispo County is quite short, with only 54 days suitable for growth so it is really important to time your planting activities, and choose varieties with shorter time to harvest requirements.

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 San Luis Obispo County, California