One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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 Bellflower should be used to figure out when it's the best time to plant nasturtium.

Planting Calendar for Nasturtium

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

It's a bad idea to plant nasturtium until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant nasturtium in Bellflower 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 nasturtium and expect a good harvest is probably September. 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 little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on January 31 in Bellflower. You can expect an average low temperature of 35°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is an average because it is based on the USDA zone info for Bellflower and it changes from year to year. Since half of the time in Bellflower you get surprised by a frost after January 31 be ready to cover your nasturtium in the event of one of those late frosts.

USDA Zone Info for Bellflower

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 Bellflower

You may be interested in your other planting guides for Bellflower.