One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of figuring out when it's possible to plant redvein dock is to look at the USDA zone info for Portage.

Planting Calendar for Redvein Dock

Frost tolerance for redvein dock:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant redvein dock just a tiny bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant redvein dock in Portage 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 redvein dock and expect a good harvest is probably August. If you wait any later than that and your redvein dock may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your redvein dock indoors.

Last Frost Date

The average date of last frost is April 15 in Portage. You should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Portage is an average the actual date of last frost is different every year. Half of the time in Portage you get a frost after April 15 so make sure that you are ready to protect your redvein dock in the event of one of those late frosts.

USDA Zone Info for Portage

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Portage

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