When to Plant Alternaria in Zone 1a

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

By looking at the USDA zone info for Zone 1a it's possible to estimate when it's possible to plant alternaria.


Planting Calendar for Alternaria

Frost tolerance for alternaria: Not tolerant of frost.
When to plant: After the last frost.

Alternaria are not cold tolerant which tells us that you really should wait until it warms up after the last frost when the weather gets warmer before you can plant them.

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

The earliest that you can plant alternaria in Zone 1a is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant alternaria and expect a good harvest is probably July. You probably don't want to wait any later than that or else your alternaria may not have a chance to really do well. Starting your alternaria indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Zone 1a the average date of last frost happens on June 15. It might get as low as -60°F during the coldest months of winter.

Remember that USDA zone info for Zone 1a may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Zone 1a you get surprised by a frost after June 15 be ready to protect your alternaria if you have a surprise late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in your other planting guides for Zone 1a.