Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant torch lilys in Petersburg can be determined by looking at the USDA zone info.

Planting Calendar for Torch Lilys

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

Torch Lilys can survive in pretty solid cold which means that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant torch lilys in Petersburg 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 torch lilys and expect a good harvest is probably September. If you wait any later than that and your torch lilys may not have a chance to really do well. Starting your torch lilys indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Petersburg. It might get as low as 5°F during the coldest months of winter.

Keep in mind that USDA zone info for Petersburg is not always accurate and the actual date of last frost is different every year. Half of the time in Petersburg it frosts late in the year after April 15 so make sure that you are ready to protect your torch lilys in the event of one of those late frosts.

USDA Zone Info for Petersburg

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 Petersburg

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