The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 Largo can be looked at to estimate when it's possible to plant lobelia.

Planting Calendar for Lobelia

Frost tolerance for lobelia:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since lobelia do well in cold you can plant them earlier in the year than other plants that might not handle the cold.

The earliest that you can plant lobelia in Largo is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant lobelia and expect a good harvest is probably October. You probably don't want to wait any later than that or else your lobelia may not have a chance to fully mature. Starting your lobelia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Largo. You can expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Largo is an average the actual date of last frost will vary from year to year. Since half of the time in Largo you get a frost after January 31 be ready to protect your lobelia if you have a late frost.

USDA Zone Info for Largo

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 Largo

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