One of the first steps you take when you are figuring out 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 USDA zone info for South San Francisco can be looked at to estimate when to plant tropical water plants.

Planting Calendar for Tropical Water Plants

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

Tropical Water Plants require warm weather which tells us that you need to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant tropical water plants in South San Francisco 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 tropical water plants and expect a good harvest is probably September. If you wait any later than that and your tropical water plants may not have a chance to really do well. You can get started a few weeks earlier by starting your tropical water plants indoors.

Last Frost Date

In South San Francisco the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for South San Francisco is not always accurate and the actual date of last frost changes from year to year. Half of the time in South San Francisco last frost occurs after January 31 so always be ready to protect your tropical water plants if you have one of those late frosts.

USDA Zone Info for South San Francisco

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 Low	30°F
Highest Expected Low	35°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 South San Francisco

You may be interested in your other planting guides for South San Francisco.