The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Royal Oak it's possible to determine when it's a good idea to plant torch lilys.

Planting Calendar for Torch Lilys

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

You can plant torch lilys much earlier in the year because they are very cold tolerant.

The earliest that you can plant torch lilys in Royal Oak 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. Any later than that and your torch lilys may not have a chance to fully mature. Starting your torch lilys indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Royal Oak. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Royal Oak is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Royal Oak last frost occurs after April 15 so just be sure to be ready to cover your torch lilys in the event of one of those late frosts.

USDA Zone Info for Royal Oak

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Royal Oak

You may be interested in your other planting guides for Royal Oak.