When to Plant Schizanthus in Alhambra, CA

One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

You can figure out when you can plant schizanthus in Alhambra by reviewing the USDA zone info.


Planting Calendar for Schizanthus

Frost tolerance for schizanthus: Not tolerant of frost.
When to plant: After all chance of frost has passed.

You can not plant schizanthus until after the last frost because they are not cold tolerant.

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

The earliest that you can plant schizanthus in Alhambra 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 schizanthus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your schizanthus may not have a chance to grow to maturity. Starting your schizanthus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Alhambra the average date of last frost happens on January 31. You can expect an average low temperature of 30°F in the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Alhambra and it can change quite a bit from year to year. Half of the time in Alhambra you get surprised by a frost after January 31 so just be sure to be ready to protect your schizanthus if you have a surprise late frost.

USDA Zone Info for Alhambra

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 Low30°F
Highest Expected Low35°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 Alhambra

You may be interested in your other planting guides for Alhambra.