The USDA Zone info is a great tool for gardeners to help us determine 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 Madison you can determine when it's the best time to plant flax by looking at the USDA zone info.

Planting Calendar for Flax

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

You can plant flax just a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant flax in Madison 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 flax and expect a good harvest is probably September. If you wait any later than that and your flax may not have a chance to fully mature. Starting your flax indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Madison. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for Madison is an average and the actual date of last frost will vary from year to year. Half of the time in Madison you get a frost after April 15 so always be ready to cover your flax if you have a surprise late frost.

USDA Zone Info for Madison

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Madison

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