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

The USDA zone info for Lewiston should be reffered to in order to determine when it's possible to plant chamomile.

Planting Calendar for Chamomile

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

Chamomile are moderately cold tolerant which tells us that you can start planting them earlier than other plants that might not handle the cold.

The earliest that you can plant chamomile 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 chamomile and expect a good harvest is probably September. You probably don't want to wait any later than that or else your chamomile may not have a chance to fully mature. You can get started a few weeks earlier by starting your chamomile indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Lewiston. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Lewiston is not always accurate the actual date of last frost will vary from year to year. Half of the time in Lewiston it frosts late in the year after April 15 so always be ready to protect your chamomile if you have a surprise late frost.

USDA Zone Info for Lewiston

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°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.