The USDA Zone info is a great tool for gardeners to help us figure out 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.

It's possible to determine when it's a good idea to plant geum by checking out the USDA zone info for Houghton.

Planting Calendar for Geum

Frost tolerance for geum:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant geum a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant geum in Houghton is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant geum and expect a good harvest is probably August. If you wait any later than that and your geum may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your geum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Houghton. You should expect an average low temperature of -15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Houghton is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Houghton it frosts late in the year after April 15 so just be sure to be ready to protect your geum if you have a surprise late frost.

USDA Zone Info for Houghton

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 Houghton

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