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When to Plant Lisianthus in Rohnert Park, CA

One of the first steps you take when you are estimating 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.

The earliest that you can plant lisianthus in Rohnert Park should be determined by checking out the USDA zone info.


Planting Calendar for Lisianthus

Frost tolerance for lisianthus: Not tolerant of frost.
When to plant: After the last frost has passed.

Lisianthus are not cold tolerant which means that it is necessary to wait until it warms up after the last frost has passed before you can plant them.

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

The earliest that you can plant lisianthus in Rohnert Park is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant lisianthus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your lisianthus may not have a chance to really do well. Starting your lisianthus indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Rohnert Park. You should expect an average low temperature of 25°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Rohnert Park and it changes from year to year. Since half of the time in Rohnert Park you get surprised by a frost after February 15 be ready to cover your lisianthus if you have a surprise late frost.

USDA Zone Info for Rohnert Park

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 Rohnert Park

You may be interested in your other planting guides for Rohnert Park.