The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By referring to the USDA zone info for Lake Elsinore it's a good idea to determine when to plant blue throatwort.

Planting Calendar for Blue Throatwort

Frost tolerance for blue throatwort:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's a bad idea to plant blue throatwort until after all chance of frost has passed because they require warm weather.

The earliest that you can plant blue throatwort in Lake Elsinore 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 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. If you are starting your blue throatwort indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Lake Elsinore is an average the actual date of last frost changes from year to year. Half of the time in Lake Elsinore it frosts late in the year after February 15 so make sure that you are prepared to cover your blue throatwort in the event of one of those late frosts.

USDA Zone Info for Lake Elsinore

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 Lake Elsinore

You may be interested in your other planting guides for Lake Elsinore.