One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant tropical water plants in Rohnert Park should be figured out by referring to the USDA zone info.

Planting Calendar for Tropical Water Plants

Frost tolerance for tropical water plants:	Not tolerant of frost.
When to plant:	After the last frost.

You should not plant tropical water plants until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant tropical water plants 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 tropical water plants and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tropical water plants may not have a chance to really do well. Starting your tropical water plants indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Always keep in mind 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 can change quite a bit 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 tropical water plants 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 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 Rohnert Park

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