One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

By looking at the USDA zone info for Zone 4b it's a good idea to determine when it's the best time to plant jasmine.

Planting Calendar for Jasmine

Frost tolerance for jasmine:	Not tolerant of frost.
When to plant:	After the last frost.

Since jasmine are not cold tolerant it's important to wait until after the last frost before you can plant them.

The earliest that you can plant jasmine in Zone 4b is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant jasmine and expect a good harvest is probably August. Any later than that and your jasmine may not have a chance to grow to maturity. You can get started a little bit earlier by starting your jasmine indoors.

Last Frost Date

The average date of last frost is May 15 in Zone 4b. You can expect an average low temperature of -25°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Zone 4b and it is different every year. Since half of the time in Zone 4b you get surprised by a frost after May 15 be ready to cover your jasmine in the event of one of those late frosts.

USDA Zone Info for Zone 4b

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Zone 4b

You may be interested in your other planting guides for Zone 4b.