One of the first steps you take when you are estimating 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.

By checking out the USDA zone info for Belfast it's a good idea to figure out when it's the best time to plant polka dot plant.

Planting Calendar for Polka Dot Plant

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

You should not plant polka dot plant until after the last frost because they do not do well in cold weather.

The earliest that you can plant polka dot plant in Belfast 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. Starting your polka dot plant indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Belfast the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that USDA zone info for Belfast 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 Belfast it frosts late in the year after April 15 be ready to cover your polka dot plant if you have a surprise late frost.

USDA Zone Info for Belfast

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 Belfast

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