When to plant Arugula in Humboldt County, California, United States

Arugula can be planted after May 25, when air temperature is consistently in a range between 20°F and 75°F and soil temperature is above 45°F.

Growing Arugula in Humboldt County

Humboldt County has on average 124 days, suitable for growing Arugula. Arugula needs on average between 21 and 40 days to mature and produce harvest. With 124 days suitable for growing, you can expect good harvest without too much effort if all planting activities are done in timely manner.

Arugula seeds can be planted between June 10 and September 20. Planting before June 10 without any additional protection is not advised because cold streaks can damage or kill off young plant. When planting after September 20, Arugula will not have enough time to mature and produce harvest.

Growing season extention

In order to maximize chances for a good harvest of Arugula in Humboldt 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 21 days on average for Arugula to sprout, and grow big enough to be ready for transplanting.

Humboldt County has 2 distinct seasons for growing Arugula

• In order to get plants ready for May 25 seeds should be started indoors bwetween May 04 and May 18

  Seeds started after May 18 are not likely to mature and produce harvest.

  This Arugula growing season in Humboldt County is quite short, with only 15 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 June 10 seeds should be started indoors bwetween May 20 and September 01

  Seeds started after September 01 are not likely to mature and produce harvest.

  Arugula needs on average between 21 and 40 days to mature and produce harvest. With 124 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 Arugula, consider using additional shading to prevent heat shock.

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