One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when to plant saxifraga in Houghton by referring to the USDA zone info.

Planting Calendar for Saxifraga

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

Since saxifraga are barely cold tolerant you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant saxifraga 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 saxifraga and expect a good harvest is probably August. If you wait any later than that and your saxifraga may not have a chance to grow to maturity. You can get started a little bit earlier by starting your saxifraga indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Houghton. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that USDA zone info for Houghton is just an average and the actual date of last frost changes from year to year. Half of the time in Houghton you get surprised by a frost after April 15 so make sure that you are ready to cover your saxifraga in the event of one of those late frosts.

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.