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

A common way of making a decision about when you can plant blue throatwort is to refer to the USDA zone info for Lemon Grove.

Planting Calendar for Blue Throatwort

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

Since blue throatwort require warm weather it is important to wait until after the last frost before you can plant them.

The earliest that you can plant blue throatwort in Lemon Grove 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 blue throatwort and expect a good harvest is probably September. Any later than that and your blue throatwort may not have a chance to fully mature. Starting your blue throatwort 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 Lemon Grove. You should expect an average low temperature of 30°F in the coldest months of winter.

Since the USDA zone info for Lemon Grove may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Lemon Grove last frost occurs after January 31 so just be sure to be ready to cover your blue throatwort in the event of one of those late frosts.

USDA Zone Info for Lemon Grove

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 Lemon Grove

You may be interested in your other planting guides for Lemon Grove.