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

By using the USDA zone info for Elk River you should be able to estimate when it's a good idea to plant broccoli.

Planting Calendar for Broccoli

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

Broccoli do well in mild cold which tells us that you can plant them a little bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant broccoli in Elk River 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 broccoli and expect a good harvest is probably August. You probably don't want to wait any later than that or else your broccoli may not have a chance to grow to maturity. You can get started a little bit earlier by starting your broccoli indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Elk River. It might get as low as -25°F during the coldest months of winter.

It's important to remember that USDA zone info for Elk River 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 Elk River you get surprised by a frost after May 15 be ready to protect your broccoli if you have a late frost.

USDA Zone Info for Elk River

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 Elk River

You may be interested in your other planting guides for Elk River.