One of the first steps you take when you are getting a good idea 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 best time to plant tropical water plants in Signal Hill can be determined by using 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.

Tropical Water Plants require warm weather which means 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 Signal Hill 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 grow to maturity. You can get started a few weeks earlier by starting your tropical water plants indoors.

Last Frost Date

In Signal Hill the average date of last frost happens on January 31. You can expect an average low temperature of 35°F in the coldest months of winter.

Since the USDA zone info for Signal Hill is an average the actual date of last frost will vary from year to year. Half of the time in Signal Hill you get surprised by a frost after January 31 so be sure to be ready to cover your tropical water plants in the event of a surprise late frost.

USDA Zone Info for Signal Hill

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Signal Hill

You may be interested in your other planting guides for Signal Hill.