When to Plant Lysimachia in Granite City, IL

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Granite City should be reviewed to figure out when to plant lysimachia.


Planting Calendar for Lysimachia

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

Since lysimachia 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 lysimachia
Possibly ok, but a risky time to plant lysimachia
Probably not a good time to plant lysimachia

The earliest that you can plant lysimachia in Granite City 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 lysimachia and expect a good harvest is probably September. If you wait any later than that and your lysimachia may not have a chance to grow to maturity. If you are starting your lysimachia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Granite City. You should expect an average low temperature of -5°F in the coldest months of winter.

Remember that USDA zone info for Granite City is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Granite City you get a frost after April 15 so make sure that you are prepared to cover your lysimachia in the event of a surprise late frost.

USDA Zone Info for Granite City

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-5°F
Highest Expected Low0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Granite City

You may be interested in your other planting guides for Granite City.