One of the first steps you take when you are figuring out 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 earliest that you can plant daylily in Janesville should be estimated by checking out the USDA zone info.

Planting Calendar for Daylily

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

Daylily tend to make it in mild cold which means that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant daylily in Janesville 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 daylily and expect a good harvest is probably September. If you wait any later than that and your daylily may not have a chance to really do well. You can get started a couple of weeks earlier by starting your daylily indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Janesville. You can expect an average low temperature of -20°F in the coldest months of winter.

Always keep in mind that USDA zone info for Janesville may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Janesville you get surprised by a frost after April 15 be ready to protect your daylily in the event of a surprise late frost.

USDA Zone Info for Janesville

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 Janesville

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