The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant mustard in Norristown should be estimated by reviewing the USDA zone info.

Planting Calendar for Mustard

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

Since mustard are not cold tolerant it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant mustard in Norristown 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 mustard and expect a good harvest is probably August. Any later than that and your mustard may not have a chance to fully mature. You can get started a few weeks earlier by starting your mustard indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Norristown. In the coldest months of winter you can expect an average low temperature of 0°F.

Always keep in mind that USDA zone info for Norristown is an average and the actual date of last frost is different every year. Half of the time in Norristown you get surprised by a frost after April 15 so be sure to be ready to protect your mustard if you have a surprise late frost.

USDA Zone Info for Norristown

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 Norristown

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