When to Plant Saxifraga in Alpena, MI

The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Alpena you can determine when it's possible to plant saxifraga by referring to the USDA zone info.

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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.

You can plant saxifraga a bit earlier in the year because they do ok in moderate cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant saxifraga
Possibly ok, but a risky time to plant saxifraga
Probably not a good time to plant saxifraga

The earliest that you can plant saxifraga in Alpena 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. Any later than that and your saxifraga may not have a chance to really do well. You can get started a few weeks earlier by starting your saxifraga indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Alpena. In the coldest months of winter you can expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Alpena is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Alpena you get a frost after April 15 be ready to cover your saxifraga in the event of a late frost.

USDA Zone Info for Alpena

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 Alpena

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