One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

In Simi Valley you can determine when it's a good idea to plant tropical water plants 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 all chance of frost has passed.

It's a bad idea to plant tropical water plants until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant tropical water plants in Simi Valley 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. If you wait any later than that and your tropical water plants may not have a chance to fully mature. If you are starting your tropical water plants indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Simi Valley. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Simi Valley is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Simi Valley you get a frost after February 15 so make sure that you are ready to cover your tropical water plants if you have one of those late frosts.

USDA Zone Info for Simi Valley

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 Simi Valley

You may be interested in your other planting guides for Simi Valley.