When to Plant Polka Dot Plant in Johnstown, PA

The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant polka dot plant in Johnstown should be figured out by reviewing 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.

It's probably a bad idea to plant polka dot plant until after the last frost has passed because they are not cold tolerant.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant polka dot plant
Possibly ok, but a risky time to plant polka dot plant
Probably not a good time to plant polka dot plant

The earliest that you can plant polka dot plant in Johnstown 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. You probably don't want to wait any later than that or else your polka dot plant may not have a chance to fully mature. You can get started a few weeks earlier by starting your polka dot plant indoors.

Last Frost Date

The average date of last frost is April 15 in Johnstown. In the coldest months of winter you can expect an average low temperature of -10°F.

It's important to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Johnstown and it can change quite a bit from year to year. Since half of the time in Johnstown there is a last frost after April 15 be ready to cover your polka dot plant in the event of one of those late frosts.

USDA Zone Info for Johnstown

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-10°F
Highest Expected Low-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Johnstown

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