One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when it's a good idea to plant polka dot plant is to refer to the USDA zone info for Round Lake.

Planting Calendar for Polka Dot Plant

Frost tolerance for polka dot plant:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant polka dot plant until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant polka dot plant in Round Lake is April. However, you really should wait until May if you don't want to take any chances.

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

Last Frost Date

The average date of last frost is April 15 in Round Lake. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Round Lake is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Round Lake it frosts late in the year after April 15 so be sure to be ready to cover your polka dot plant if you have a surprise late frost.

USDA Zone Info for Round Lake

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 Round Lake

You may be interested in your other planting guides for Round Lake.