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

In Thomson you can estimate when it's a good idea to plant strawflowers by reviewing the USDA zone info.

Planting Calendar for Strawflowers

Frost tolerance for strawflowers:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Strawflowers are barely cold tolerant which means that you can plant them slightly earlier than more sensitive plants.

The earliest that you can plant strawflowers in Thomson is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant strawflowers and expect a good harvest is probably August. You probably don't want to wait any later than that or else your strawflowers may not have a chance to really do well. You can get started a couple of weeks earlier by starting your strawflowers indoors.

Last Frost Date

The average date of last frost is March 15 in Thomson. You can expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Thomson is just an average the actual date of last frost is different every year. Since half of the time in Thomson there is a last frost after March 15 be ready to cover your strawflowers in the event of a surprise late frost.

USDA Zone Info for Thomson

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Thomson

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