One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when to plant blue throatwort is to consult the USDA zone info for Lodi.

Planting Calendar for Blue Throatwort

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

Blue Throatwort are not cold tolerant which means that you need to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant blue throatwort in Lodi 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. You can get started a couple of weeks earlier by starting your blue throatwort indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Lodi. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Lodi may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Lodi you get surprised by a frost after February 15 be ready to cover your blue throatwort in the event of a surprise late frost.

USDA Zone Info for Lodi

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 Lodi

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