Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Goodland you can estimate when you can plant sunflowers by checking out the USDA zone info.

Planting Calendar for Sunflowers

Frost tolerance for sunflowers:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's not a good idea to plant sunflowers until after the last frost because they are not cold tolerant.

The earliest that you can plant sunflowers in Goodland 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 sunflowers and expect a good harvest is probably August. If you wait any later than that and your sunflowers may not have a chance to fully mature. Starting your sunflowers 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 Goodland. It might get as low as -10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Goodland is just an average and the actual date of last frost is different every year. Half of the time in Goodland you get surprised by a frost after April 15 so make sure that you are prepared to cover your sunflowers if you have one of those late frosts.

USDA Zone Info for Goodland

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Goodland

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