One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Moreno Valley you can determine when it's the best time to plant welsh onion by referring to the USDA zone info.

Planting Calendar for Welsh onion

Frost tolerance for welsh onion:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant welsh onion just a tiny bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant welsh onion in Moreno Valley is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant welsh onion and expect a good harvest is probably September. If you wait any later than that and your welsh onion may not have a chance to really do well. If you are starting your welsh onion indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Moreno Valley. In the coldest months of winter you should expect an average low temperature of 25°F.

It's important to remember that USDA zone info for Moreno Valley is just an average and the actual date of last frost will vary from year to year. Since half of the time in Moreno Valley it frosts late in the year after February 15 be ready to protect your welsh onion in the event of a late frost.

USDA Zone Info for Moreno Valley

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Moreno Valley

You may be interested in your other planting guides for Moreno Valley.