When to Plant Foxglove in Monticello, IL

One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when it's possible to plant foxglove is to check out the USDA zone info for Monticello.


Planting Calendar for Foxglove

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

Since foxglove are moderately cold tolerant you can plant them a little earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant foxglove in Monticello 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 foxglove and expect a good harvest is probably September. If you wait any later than that and your foxglove may not have a chance to grow to maturity. You can get started a little bit earlier by starting your foxglove indoors.

Last Frost Date

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

Since the USDA zone info for Monticello is an average the actual date of last frost is different every year. Half of the time in Monticello it frosts late in the year after April 15 so make sure that you are ready to cover your foxglove if you have a late frost.

USDA Zone Info for Monticello

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 Monticello

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