When to Plant Nasturtium in Morrison, IL

One of the best tools that you have as gardeners to help us estimate 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.

The best time to plant nasturtium in Morrison should be figured out by referring to the USDA zone info.


Planting Calendar for Nasturtium

Frost tolerance for nasturtium: Not tolerant of frost.
When to plant: After the last frost.

You should not plant nasturtium until after all chance of frost has passed because they do not do well in cold weather.

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

The earliest that you can plant nasturtium in Morrison 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 nasturtium and expect a good harvest is probably August. Any later than that and your nasturtium may not have a chance to really do well. You can get started a couple of weeks earlier by starting your nasturtium indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Morrison. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Morrison is just an average the actual date of last frost will vary from year to year. Since half of the time in Morrison it frosts late in the year after April 15 be ready to cover your nasturtium if you have one of those late frosts.

USDA Zone Info for Morrison

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 Morrison

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