One of the best tools that you have as gardeners to help us figure out 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.

A way of determining when it's a good idea to plant welsh onion is to check out the USDA zone info for Laguna Niguel.

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.

Welsh onion do ok in moderate cold which tells us that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant welsh onion in Laguna Niguel 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 grow to maturity. Starting your welsh onion indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Laguna Niguel. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Laguna Niguel is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Laguna Niguel last frost occurs after January 31 so just be sure to be ready to cover your welsh onion in the event of one of those late frosts.

USDA Zone Info for Laguna Niguel

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Laguna Niguel

You may be interested in your other planting guides for Laguna Niguel.