Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In New Castle you can figure out when it's the best time to plant polka dot plant by using the USDA zone info.

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.

Polka Dot Plant are not cold tolerant which means that you have to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant polka dot plant in New Castle 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. If you are starting your polka dot plant indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In New Castle the average date of last frost happens on April 15. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for New Castle is not always accurate the actual date of last frost is different every year. Since half of the time in New Castle last frost occurs after April 15 be ready to protect your polka dot plant if you have one of those late frosts.

USDA Zone Info for New Castle

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in New Castle

You may be interested in your other planting guides for New Castle.