frostdate name logo in white
frostdate name logo in white

When to Plant Anchusa in Rancho Cucamonga, CA

Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when it's possible to plant anchusa by using the USDA zone info for Rancho Cucamonga.


Planting Calendar for Anchusa

Frost tolerance for anchusa: Very tolerant of frost.
When to plant: Up to 7 weeks before last frost.

Anchusa do well in cold weather which means that you can plant them much earlier in the year than more sensitive plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant anchusa
Possibly ok, but a risky time to plant anchusa
Probably not a good time to plant anchusa

The earliest that you can plant anchusa 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 anchusa and expect a good harvest is probably October. If you wait any later than that and your anchusa may not have a chance to fully mature. If you are starting your anchusa indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Rancho Cucamonga the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Rancho Cucamonga and it will vary from year to year. Half of the time in Rancho Cucamonga you get surprised by a frost after February 15 so make sure that you are prepared to cover your anchusa in the event of a surprise 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 Low25°F
Highest Expected Low30°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.