One of the first steps you take when you are getting a good idea 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 first opportunity to plant scaevola in Waltham can be estimated by checking out the USDA zone info.

Planting Calendar for Scaevola

Frost tolerance for scaevola:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since scaevola do not do well in cold weather you really should wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant scaevola in Waltham is April. However, you really should wait until May if you don't want to take any chances.

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

Last Frost Date

In Waltham the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -10°F.

Just be sure to remember that USDA zone info for Waltham may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Waltham there is a last frost after April 15 be ready to protect your scaevola in the event of one of those late frosts.

USDA Zone Info for Waltham

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Waltham

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