One of the first steps you take when you are determining your gardening schedule is find your 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.

A way of figuring out when to plant nemesia is to look at the USDA zone info for Altoona.

Planting Calendar for Nemesia

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

It's not a good idea to plant nemesia until after all chance of frost has passed because they require warm weather.

The earliest that you can plant nemesia in Altoona is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant nemesia and expect a good harvest is probably August. If you wait any later than that and your nemesia may not have a chance to fully mature. Starting your nemesia indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Altoona. You can expect an average low temperature of -25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Altoona is just an average and the actual date of last frost is different every year. Since half of the time in Altoona you get surprised by a frost after May 15 be ready to cover your nemesia if you have 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.