One of the first steps you take when you are figuring out 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.

You will be able to estimate when it's the best time to plant sweet williams by using the USDA zone info for Keizer.

Planting Calendar for Sweet Williams

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

Since sweet williams are one of those plants that can tolerate a little bit of cold weather you can plant them a little bit earlier in the year than more sensitive plants.

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

Last Frost Date

On average all chance of frost has passed is on March 15 in Keizer. In the coldest months of winter you should expect an average low temperature of 15°F.

It's important to remember that USDA zone info for Keizer is an average and the actual date of last frost will vary from year to year. Half of the time in Keizer you get a frost after March 15 so be sure to be ready to protect your sweet williams if you have one of those late frosts.

USDA Zone Info for Keizer

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Keizer

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