The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Isanti should be read to estimate when it's possible to plant roses.

Planting Calendar for Roses

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

You can plant roses a little 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 roses in Isanti is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant roses and expect a good harvest is probably August. Any later than that and your roses may not have a chance to really do well. Starting your roses indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Isanti. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Isanti may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Isanti it frosts late in the year after May 15 be ready to cover your roses if you have one of those late frosts.

USDA Zone Info for Isanti

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Isanti

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