Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By reviewing the USDA zone info for Zone 4b it's possible to estimate when to plant axilflower.

Planting Calendar for Axilflower

Frost tolerance for axilflower:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Axilflower do not do well in cold weather which tells us that it's important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant axilflower 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 axilflower and expect a good harvest is probably August. Any later than that and your axilflower may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your axilflower indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Zone 4b. In the coldest months of winter you can expect an average low temperature of -25°F.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Zone 4b and it changes from year to year. Since half of the time in Zone 4b you get a frost after May 15 be ready to protect your axilflower 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.