Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Hartford you can estimate when it's possible to plant vinca vine by looking at the USDA zone info.

Planting Calendar for Vinca Vine

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

Vinca Vine do well in moderate cold which means that you can start planting them earlier than other frost tender plants.

The earliest that you can plant vinca vine in Hartford 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 vinca vine and expect a good harvest is probably September. You probably don't want to wait any later than that or else your vinca vine may not have a chance to grow to maturity. Starting your vinca vine indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Hartford. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Hartford may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Hartford it frosts late in the year after April 15 so always be ready to protect your vinca vine in the event of a late frost.

USDA Zone Info for Hartford

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Hartford

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