One of the first steps you take when you are getting a good idea 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.

The first opportunity to plant garden mums in Lewiston can be estimated by checking out the USDA zone info.

Planting Calendar for Garden Mums

Frost tolerance for garden mums:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Garden Mums are moderately cold tolerant which means that you can plant them earlier than more sensitive plants.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Lewiston. You should expect an average low temperature of 5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Lewiston is an average and the actual date of last frost will vary from year to year. Since half of the time in Lewiston you get surprised by a frost after April 15 be ready to cover your garden mums if you have a surprise late frost.

USDA Zone Info for Lewiston

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 Lewiston

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