Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to estimate when it's possible to plant polka dot plant by looking at the USDA zone info for Dubuque.

Planting Calendar for Polka Dot Plant

Frost tolerance for polka dot plant:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since polka dot plant do not do well in cold weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant polka dot plant in Dubuque 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. If you wait any later than that and your polka dot plant may not have a chance to really do well. If you are starting your polka dot plant indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Dubuque. You can expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Dubuque may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Dubuque it frosts late in the year after April 15 so just be sure to be ready to cover your polka dot plant in the event of a late frost.

USDA Zone Info for Dubuque

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 Dubuque

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