When to Plant Steirodiscus in Silvis, IL

One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of making a decision about when it's possible to plant steirodiscus is to look at the USDA zone info for Silvis.

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Planting Calendar for Steirodiscus

Frost tolerance for steirodiscus: Tolerant of a very small amount of frost.
When to plant: Up to 3 weeks before last frost.

Steirodiscus can survive in mild cold which tells us that you can plant them a bit earlier in the year than other frost tender plants.

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

The earliest that you can plant steirodiscus in Silvis is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant steirodiscus and expect a good harvest is probably August. Any later than that and your steirodiscus may not have a chance to really do well. If you are starting your steirodiscus indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Silvis the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Silvis may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Silvis you get a frost after April 15 so make sure that you are prepared to cover your steirodiscus if you have one of those late frosts.

USDA Zone Info for Silvis

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 Silvis

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