Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of estimating when it's possible to plant lobelia is to check out the USDA zone info for Jasper.

Planting Calendar for Lobelia

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

Lobelia do ok in a bit of cold which means that you can plant them a lot earlier in the year than other plants that might not handle the cold.

The earliest that you can plant lobelia in Jasper 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 lobelia and expect a good harvest is probably September. Any later than that and your lobelia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your lobelia indoors.

Last Frost Date

The average date of last frost is April 15 in Jasper. You should expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Jasper is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Jasper it frosts late in the year after April 15 be ready to protect your lobelia if you have a late frost.

USDA Zone Info for Jasper

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Jasper

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