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.

The USDA zone info for Altoona should be read to figure out when it's possible to plant steirodiscus.

Planting Calendar for Steirodiscus

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

Since steirodiscus are barely cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

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

Last Frost Date

On average all chance of frost has passed is on May 15 in Altoona. In the coldest months of winter you should expect an average low temperature of -25°F.

Just be sure to remember that USDA zone info for Altoona may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Altoona last frost occurs after May 15 so make sure that you are ready to cover your steirodiscus in the event of one of those late frosts.

USDA Zone Info for Altoona

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Altoona

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