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When to Plant Alternaria in Oak Harbor, WA

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

The earliest that you can plant alternaria in Oak Harbor can be determined by checking out the USDA zone info.


Planting Calendar for Alternaria

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

Since alternaria are not cold tolerant it is important to wait until after all chance of frost has passed 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 Oak Harbor 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 alternaria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your alternaria may not have a chance to grow to maturity. If you are starting your alternaria indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Oak Harbor. You should expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Oak Harbor and it can change quite a bit from year to year. Since half of the time in Oak Harbor you get surprised by a frost after March 15 be ready to protect your alternaria in the event of one of those late frosts.

USDA Zone Info for Oak Harbor

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low15°F
Highest Expected Low20°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 20°F.

Plants to Grow in Oak Harbor

You may be interested in your other planting guides for Oak Harbor.