When can I plant Lavender in Prospect Heights, IL

One of the first steps we take when we are getting a good idea our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

In Prospect Heights you can estimate when to plant lavender by referring to the USDA zone info.


Planting Calendar for Lavender

Frost tolerance for lavender: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

Since lavender are one of those plants that can tolerate a little bit of cold weather you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

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

The earliest that you can plant lavender in Prospect Heights 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 lavender and expect a good harvest is probably September. You probably don't want to wait any later than that or else your lavender may not have a chance to grow to maturity. Starting your lavender indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Prospect Heights. We can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Prospect Heights is not always accurate our actual date of last frost can change quite a bit from year to year. Half of the time in Prospect Heights we get surprised by a frost after April 15 so just be sure to be ready to protect your lavender in the event of one of those late frosts.

USDA Zone Info for Prospect Heights

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 Prospect Heights

You may be interested in our other planting guides for Prospect Heights.