One of the best tools that you have as gardeners to help us determine 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.

You should be able to figure out when it's possible to plant nasturtium by referring to the USDA zone info for Long Beach.

Planting Calendar for Nasturtium

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

Nasturtium do not do well in cold weather which tells us that it's necessary to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant nasturtium in Long Beach 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 nasturtium and expect a good harvest is probably September. If you wait any later than that and your nasturtium may not have a chance to fully mature. If you are starting your nasturtium indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Long Beach the average date of last frost happens on February 15. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Long Beach is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Long Beach last frost occurs after February 15 so make sure that you are ready to cover your nasturtium in the event of one of those late frosts.

USDA Zone Info for Long Beach

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Long Beach

You may be interested in your other planting guides for Long Beach.