When to Plant Melampodium in Norristown, PA

The USDA Zone info is a great tool for gardeners to help us determine 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.

You will be able to estimate when you can plant melampodium by using the USDA zone info for Norristown.


Planting Calendar for Melampodium

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

Since melampodium require warm weather you need to wait until after all chance of frost has passed before you can plant them.

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

The earliest that you can plant melampodium 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 melampodium and expect a good harvest is probably August. Any later than that and your melampodium may not have a chance to grow to maturity. You can get started a little bit earlier by starting your melampodium indoors.

Last Frost Date

On average the last frost is on April 15 in Norristown. You can expect an average low temperature of 0°F in the coldest months of winter.

Always keep in mind that USDA zone info for Norristown is an average and the actual date of last frost changes from year to year. Half of the time in Norristown you get a frost after April 15 so just be sure to be ready to protect your melampodium in the event of 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 Low0°F
Highest Expected Low5°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.