One of the first steps you take when you are determining 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.

The USDA zone info for Yorkville should be reviewed to determine when to plant nasturtium.

Planting Calendar for Nasturtium

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

Since nasturtium are not cold tolerant you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant nasturtium in Yorkville 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 little bit earlier by starting your nasturtium indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Yorkville. You can expect an average low temperature of -15°F in the coldest months of winter.

Always keep in mind that USDA zone info for Yorkville is just an average and the actual date of last frost will vary from year to year. Since half of the time in Yorkville you get surprised by a frost after April 15 be ready to cover your nasturtium in the event of one of those late frosts.

USDA Zone Info for Yorkville

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 Yorkville

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