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 USDA zone info for New Castle can be reffered to in order to determine when it's possible to plant feverfew.

Planting Calendar for Feverfew

Frost tolerance for feverfew:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since feverfew do well in moderate cold you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant feverfew in New Castle is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant feverfew and expect a good harvest is probably September. If you wait any later than that and your feverfew may not have a chance to really do well. You can get started a little bit earlier by starting your feverfew indoors.

Last Frost Date

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

Since the USDA zone info for New Castle may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in New Castle it frosts late in the year after April 15 be ready to protect your feverfew if you have a surprise late frost.

USDA Zone Info for New Castle

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 New Castle

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