One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

In Coffeyville you can determine when it's the best time to plant nasturtium by checking out the USDA zone info.

Planting Calendar for Nasturtium

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

It's probably not a good idea to plant nasturtium until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant nasturtium in Coffeyville 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 grow to maturity. Starting your nasturtium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Remember that USDA zone info for Coffeyville is just an average and the actual date of last frost will vary from year to year. Half of the time in Coffeyville you get a frost after April 15 so make sure that you are prepared to cover your nasturtium in the event of a surprise late frost.

USDA Zone Info for Coffeyville

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 Low	0°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 Coffeyville

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