The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to estimate when it's a good idea to plant nasturtium by referring to the USDA zone info for Normal.

Planting Calendar for Nasturtium

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

Since nasturtium require warm weather you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant nasturtium in Normal 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. If you wait any later than that and your nasturtium may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your nasturtium indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for Normal may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Normal last frost occurs after April 15 be ready to protect your nasturtium in the event of one of those late frosts.

USDA Zone Info for Normal

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 Normal

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