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

You will be able to figure out when it's a good idea to plant dahlia by using the USDA zone info for Gardner.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

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

The earliest that you can plant dahlia in Gardner 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 dahlia and expect a good harvest is probably August. Any later than that and your dahlia may not have a chance to grow to maturity. Starting your dahlia 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 Gardner. It might get as low as -15°F during the coldest months of winter.

Remember that USDA zone info for Gardner is an average and the actual date of last frost will vary from year to year. Half of the time in Gardner you get a frost after April 15 so make sure that you are prepared to protect your dahlia if you have a late frost.

USDA Zone Info for Gardner

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 Gardner

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