The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Collegedale you can estimate when it's a good idea to plant erysimum by looking at the USDA zone info.

Planting Calendar for Erysimum

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

Since erysimum are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant erysimum in Collegedale 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. You probably don't want to wait any later than that or else your erysimum may not have a chance to grow to maturity. You can get started a little bit earlier by starting your erysimum indoors.

Last Frost Date

On average the last frost is on April 15 in Collegedale. You can expect an average low temperature of 5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Collegedale is an average and the actual date of last frost will vary from year to year. Half of the time in Collegedale there is a last frost after April 15 so just be sure to be ready to protect your erysimum if you have a late frost.

USDA Zone Info for Collegedale

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Collegedale

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