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.

It's possible to estimate when it's a good idea to plant ruby grass by checking out the USDA zone info for Prosser.

Planting Calendar for Ruby Grass

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

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

The earliest that you can plant ruby grass in Prosser 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 ruby grass and expect a good harvest is probably August. If you wait any later than that and your ruby grass may not have a chance to really do well. You can get started a few weeks earlier by starting your ruby grass indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Prosser. You can expect an average low temperature of 0°F in the coldest months of winter.

Remember that USDA zone info for Prosser is just an average and the actual date of last frost will vary from year to year. Half of the time in Prosser you get surprised by a frost after April 15 so always be ready to protect your ruby grass in the event of a surprise late frost.

USDA Zone Info for Prosser

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 Prosser

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