The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Rancho Cucamonga you can estimate when it's the best time to plant lenten rose by referring to the USDA zone info.

Planting Calendar for Lenten Rose

Frost tolerance for lenten rose:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Lenten Rose do well in moderate cold which means that you can start planting them earlier than other frost tender plants.

The earliest that you can plant lenten rose in Rancho Cucamonga is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant lenten rose and expect a good harvest is probably October. If you wait any later than that and your lenten rose may not have a chance to grow to maturity. If you are starting your lenten rose indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Rancho Cucamonga the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Rancho Cucamonga may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Rancho Cucamonga there is a last frost after February 15 be ready to cover your lenten rose if you have a late frost.

USDA Zone Info for Rancho Cucamonga

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 Rancho Cucamonga

You may be interested in your other planting guides for Rancho Cucamonga.