Before planting it is a good idea to find your USDA Zone info to determine your garden 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 figure out when you can plant erysimum by reviewing the USDA zone info for Worcester.

Planting Calendar for Erysimum

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

You can plant erysimum just a bit earlier in the year because they do well in moderate cold.

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

Last Frost Date

On average all chance of frost has passed is on April 15 in Worcester. In the coldest months of winter you can expect an average low temperature of -15°F.

Remember that USDA zone info for Worcester is not always accurate and the actual date of last frost is different every year. Since half of the time in Worcester last frost occurs after April 15 be ready to cover your erysimum if you have a surprise late frost.

USDA Zone Info for Worcester

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 Worcester

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