One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Toppenish should be used to figure out when it's the best time to plant strawflowers.

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 do ok in moderate cold which tells us that you can plant them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant strawflowers in Toppenish 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. Any later than that and your strawflowers may not have a chance to grow to maturity. If you are starting your strawflowers indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Toppenish the average date of last frost happens on April 15. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Toppenish is an average the actual date of last frost will vary from year to year. Half of the time in Toppenish you get a frost after April 15 so just be sure to be ready to cover your strawflowers in the event of one of those late frosts.

USDA Zone Info for Toppenish

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Toppenish

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