One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when it's possible to plant saxifraga is to examine the USDA zone info for Aliso Viejo.

Planting Calendar for Saxifraga

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

Since saxifraga do ok in moderate cold you can plant them just a tiny bit earlier in the year than other frost tender plants.

The earliest that you can plant saxifraga in Aliso Viejo 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 saxifraga and expect a good harvest is probably September. You probably don't want to wait any later than that or else your saxifraga may not have a chance to really do well. Starting your saxifraga 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 Aliso Viejo. It might get as low as 30°F during the coldest months of winter.

Always keep in mind that USDA zone info for Aliso Viejo is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Aliso Viejo it frosts late in the year after January 31 be ready to protect your saxifraga if you have one of those late frosts.

USDA Zone Info for Aliso Viejo

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 Aliso Viejo

You may be interested in your other planting guides for Aliso Viejo.