When to Plant Skullcap in Robbins, IL

One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant skullcap in Robbins can be determined by looking at the USDA zone info.

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Planting Calendar for Skullcap

Frost tolerance for skullcap: Not tolerant of frost.
When to plant: After all chance of frost has passed.

Since skullcap require warm weather you have to wait until after the last frost before you can plant them.

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

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

Last Frost Date

The average date of last frost is April 15 in Robbins. It might get as low as -10°F during the coldest months of winter.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Robbins and it is different every year. Half of the time in Robbins there is a last frost after April 15 so always be ready to cover your skullcap in the event of a surprise late frost.

USDA Zone Info for Robbins

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 Robbins

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