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

The best time to plant calibrachoa in Port Washington should be estimated by referring to the USDA zone info.

Planting Calendar for Calibrachoa

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

Calibrachoa do ok in moderate cold which means that you can plant them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant calibrachoa in Port Washington 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 calibrachoa and expect a good harvest is probably August. Any later than that and your calibrachoa may not have a chance to fully mature. You can get started a few weeks earlier by starting your calibrachoa indoors.

Last Frost Date

The average date of last frost is April 15 in Port Washington. In the coldest months of winter you can expect an average low temperature of -15°F.

It's important to remember that USDA zone info for Port Washington may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Port Washington it frosts late in the year after April 15 be ready to cover your calibrachoa if you have one of those late frosts.

USDA Zone Info for Port Washington

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 Port Washington

You may be interested in your other planting guides for Port Washington.